Power Break II GET 8052C 1000486169 Catalog

2016-09-04

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GE Consumer & Industrial

Electrical Distribution

Power Break® II

Insulated Case Circuit Breakers

Table of Contents

Power Break® II Circuit Breakers .........................3

Basic Conﬁguration .......................................3

Greater Convenience and Operator Safety. . . . . . . . . . . . . . . . . .3

Quick, Error-Free Installation of Universal Accessories . . . . . . .3

Three Choices of Advanced, Solid-State Trip Unites. . . . . . . . . .3

Key Features ..............................................4

Features and Characteristics .............................5

Basic Conﬁgurations ......................................5

Manual Operation .........................................5

Electrical Operation .......................................5

Drawout Construction ...................................6-7

Power+™ Trip Unit Systems ...............................8

Trip Target Module ........................................8

Operation of Power+™ Trip Unites . . . . . . . . . . . . . . . . . . . . . . . . . .9

Long-Time Protective Functions . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Short-Time Functions .................................... 10

Normal Ground-Fault Protection . . . . . . . . . . . . . . . . . . . . . . . . . 12

Ratings Plugs ...........................................13

Current Sensors ......................................... 13

MicroVersaTrip Plus™ and PM™ Trip Units ..............14

Enhancements ......................................... 14

Operation .............................................. 15

Standard and Optional Protective Functions . . . . . . . . . . . . . . 15

Long-Time Protective Functions . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Short-Time Functions .................................... 16

High-Range Instantaneous .............................. 18

Normal Ground-Fault Protection . . . . . . . . . . . . . . . . . . . . . . . . . 18

Defeatable Ground-Fault Protection . . . . . . . . . . . . . . . . . . . . . . 19

Programming Trip Units .................................22

Trip Targets – Overcurrent and Ground Fault . . . . . . . . . . . . . 22

Ratings Plugs ...........................................23

Current Sensors ......................................... 23

Accessories .............................................24

Stationary and Drawout Breakers . . . . . . . . . . . . . . . . . . . . . . . . 24

Test Kit ............................................... 24

Electrical Operator .................................... 24

Remote Close Solenoid ................................ 25

Shunt Trip ............................................26

Shunt Trip with Lockout ............................... 27

Bell Alarm ............................................ 27

Bell Alarm with Lockout ...............................28

Undervoltage Release Module . . . . . . . . . . . . . . . . . . . . . . . . . 28

Time Delay Module for UVR . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Auxiliary Switch ....................................... 29

Limited Access “Pushbutton Cover” . . . . . . . . . . . . . . . . . . . . 30

Mechanical Operations Counter . . . . . . . . . . . . . . . . . . . . . . . 29

Padlock Device ....................................... 30

Key Interlock Provision ................................ 30

Door Interlock ........................................ 30

Neutral Current Sensors ...............................31

Additional Accessories - Stationary Breakers . . . . . . . . . . . . . 31

Lug Adapter Kits ...................................... 32

T-Studs ...............................................32

Mechanical Interlocks ................................. 33

Lug Kits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Additional Accessory - Drawout Breakers . . . . . . . . . . . . . . . . . 33

Secondary Disconnects ...............................34

Shutters ..............................................34

Racking Padlock ...................................... 34

By-Pass Switch ....................................... 34

Racking Tool ..........................................34

Mechanical Interlocks ................................. 34

Lifting Bar ............................................ 34

Position Switch ....................................... 34

Catalog Numbers ....................................... 35

Circuit Breakers ......................................... 35

Accessories ............................................. 35

Power+™ Trip Units ...................................... 36

Rating Plugs ............................................ 36

MicroVersaTrip Plus™ and MicroVersaTrip PM™ . . . . . . . . . . . 37

Rating Plugs ............................................ 37

Application Data ....................................... 38

Standards and Testing ................................38-42

Power Break® II – 100 % - Rated Circuit Breakers . . . . . . . . . 42

Standard Rated Devices ............................... 42

100% Rated Devices .................................. 42

Factors Affecting the Current Ratings . . . . . . . . . . . . . . . . . . . . 42

Cable or Bus Size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42-44

Ambient Temperature ................................. 44

Operating Frequency .................................. 44

Factor “C” – Operating Frequency . . . . . . . . . . . . . . . . . . . . . . 44

Altitude ............................................... 45

Load Class Rating Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Interrupting Ratings ..................................... 45

Basis of Interrupting Ratings . . . . . . . . . . . . . . . . . . . . . . . . 45-47

Miscellaneous Information and

Control Power Information ............................... 48

Humidity and Fungus ................................. 48

Wiring Diagram, Secondary Terminals . . . . . . . . . . . . . . . . . 48

Time Current Tripping Characteristics . . . . . . . . . . . . . . . . . . 48

Time Current Curves ...............................49-50

Physical Data

Outline Dimension Drawings . . . . . . . . . . . . . . . . . . . . . .51-107

Weight and Space Requirements . . . . . . . . . . . . . . . . . . . . . 107

Standards and References .............................108

Guide Form Speciﬁcations .........................109-112

Other Related Publications ............................113

Power Break® II Circuit Breakers

Basic Conﬁguration

In 1965 GE pioneered the design of insulated case circuit

breakers when it introduced the original Power Break circuit

breaker. Now, GE introduces Power Break II insulated case

circuit breakers, the vanguard of a new age in reliable, ﬂex-

ible and easy-to-use circuit protection.

Power Break II circuit breakers are UL Listed, CSA Certiﬁed

and IEC Certiﬁed* for up to 200,000 amps, at 240 volts, rms

symmetrical interrupting capacity without fuses or current

limiters. These new insulated case circuit breakers can be

applied on ac power systems through 600 volts. Featuring

an all-new 2000A compact design – up to 40% smaller than

before – Power Break II circuit breakers consist of three

envelope sizes from 800 to 4000 amps.

Greater Convenience And Operations Safety

The controls and status indicators you need most are read-

ily accessible. The ﬂush-mounted handle, ON/OFF buttons,

rating plug test receptacle, bell alarm reset buttons– with

or without lockout – are easily reached; and all are double-

insulated from live components. And, for added security, a

standard padlock device lets you prevent accidental or

unauthorized closing of the breaker.

*See Performance chart page 46.

Quick, Error-Free Installation

of Universal Accessories

Drop-in bell alarm with manual reset lockout, shunt trip

(with or without lockout) and undervoltage release install in

seconds. No special tools. No breaker disassembly. Just slide

them into place. The modules are universal across all frame

sizes, and each is mechanically keyed to its compartment so

you make the right connection, every time. These accessories

are ﬁeld installable and upgradeable.

Three Choices of Advanced, Solid-State Trip Units

Enhanced MicroVersaTrip™ Plus and MicroVersaTrip PM™

trip units give you two new ways to monitor and control the

Power Break II breaker with unprecedented ease. A simple

keypad lets you program and display a variety of functions

including tripping characteristics, remote communica-

tions, status information and protective relaying, and allows

integration with GE POWER LEADER™ Power Management

Systems. The trip unit display also allows viewing of many

standard metering parameters as well as pickup alarms,

trip target indications and fault status information. For less

demanding functionality, the Power+™ trip unit gives you

a third choice in Power Break II breaker control. Tripping

characteristics are easily adjusted by a set of simple-to-use

switches. The trip unit is upgradeable to ground fault by

simply inserting a ground fault rating plug. An optional target

module allows for target monitoring and also functions as a

trip unit health indicator.

Key Features

1) Compact, lightweight design

2) 36-point pre-wired, dedicated secondary

terminal block standard (see item 16)

3) Optional mechanical counter

4) Padlock device standard

5) Easy-to-reach ON/OFF buttons

6) Choice of Power+™, MicroVersaTrip Plus™ or

MicroVersaTrip PM™ trip units- ﬁeld upgradeable,

UL Listed, CSA Certiﬁed. IEC 947-2 Certiﬁed*

7) Sealable door provides added security

8) Drop-in shunt trip, undervoltage release and bell alarm

(with and without manual lockout) modules

9) Flush-mounted pump handle

Power Break® II Circuit Breakers

Other

• Two-stage, stored energy mechanism provides charge-af-

ter-close capability

• Stationary and drawout versions (stationary shown)

• Manually and electrically operated versions in same enve-

lope

• Modular, ﬁeld-installable motor operator and remote-close

solenoid with independent voltages available

• All frames upgradeable to POWER LEADER™ Power

Management Systems

• Conﬁgurable accessories activated through integrated

electronics provide new status information and allow new

ﬂexibility in bell alarm and lockout control

• Modular auxiliary switches mounted beneath trip unit with

up to 12 NO/NC sets of contacts (Internal)

(Up to 36 terminals pre-wired to item 2, left side of breaker)

* See performance chart page 46.

1 6

Basis Conﬁgurations

All Power Break® II circuit breakers are available in two levels

of interrupting capacity – “standard break” and “Hi-Break®”

breakers. Each interrupting level is available in both station-

ary and drawout construction, with a full complement of

control and signaling accessories.

Standard break breakers are designed to meet the majority

of application requirements, calling for moderate levels of

available short-circuit current.

Hi-Break breakers, on the other hand, are specially designed

to withstand the stresses, and safely interrupt high levels of

short circuit current found in some applications (from 65 to

200 kA rms symmetrical amps – depending on voltage).

Manual Operation

The circuit breaker closing spring is energized by size opera-

tions of the retractable pump handle. Each handle move-

ment is a stage in the pre-charging of a spring-loaded,

quick-make, quick-break mechanism. To close the breaker

contacts, depress the “PUSH ON” button. With the breaker

in the “ON” position, it is now possible to recharge the main

closing springs by repeating the spring charging procedure.

The circuit breaker opening springs are automatically

charged when the breaker is closed. To open the breaker

and de-energize downstream circuits, manually depress the

“PUSH OFF” button.

Electrical Operation

The electrical operation ﬁts under the cover of the manually

operated breaker. This assembly may be added to any Power

Break II breaker – in the factory or in the ﬁeld – to provide

the electrical charge feature. All breaker controls inputs and

outputs are pre-wired to dedicated secondary terminals for

Table 5.1

Sequence Of Operation

ON/OFF

Indicator

Main Breaker

Contacts

Charging Spring

Indicator

Condition of

Charging Spring

Next Permissible

Operating Function

OFF Open Discharged Discharged Closing springs may be charged

OFF Open Charged Fully Charged Contacts may be closed

ON Closed Discharged Discharged Contacts may be opened, or

closing springs may be charged

ON Closed Charged Fully Charged Contacts may be opened

OFF Open Charged Fully Charged Closing spring may be discharged

without closing contacts by depressing

OFF button while pushing ON button

Features and Characteristics

Operation of circuit breaker pump handle

easy ﬁeld installation. To complete the remote-operation

feature, a remote-close solenoid and either a shunt trip (with

or without lockout) or undervoltage release accessory is also

required. The electrical operator can be wired to automati-

cally re-charge the breaker after CLOSE or upon command.

Should motor control power be lost during the charging cycle

(3 seconds duration), spring charging may be completed

manually by using the pump handle. No special tools are

required. Any electrically operated breaker may be operated

manually.

For details of electrical control power requirements and wir-

ing diagrams, see pages 25-26.

Breaker Closing Speed

Three-cycle maximum closing speed, at nominal voltage, is

standard for all frame sizes. This speed exceeds the require-

ments for generator synchronizing.

Features and Characteristics

Drawout Construction

Type SSD (standard break) and SHD (Hi-Break®) Power Break

II drawout breakers are used in type SPSDOS and SPHDOS

substructures, providing the convenience and safety inherent

in drawout breaker construction. Drawout construction per-

mits activation of a new feeder, rapid circuit breaker replace-

ment, or inspection and maintenance of a breaker without

the inconvenience of de-energizing an entire switchboard.

Features (see photos, following page)

1) Primary disconnects: primary power is fed through mul-

tiple ﬁnger primary disconnect terminals when connected

to the primary stabs in the substructure.

2) Secondary disconnects: control signals are provided

through the 72 (36 maximum each side) secondary

disconnect terminals in the test and connected positions

only.

3) Wheels: the breaker has rollers which allow the unit to

ride on the substructure’s retractable rails for easy re-

moval and installation.

4) Wrench interlock: an interlock prevents engagement of

the racking wrench when the breaker contacts are closed.

This prevents disconnecting a closed breaker.

5) Drawout position indicator and switch: a drawout posi-

tion indicator displays whether the breaker is in the con-

nected, test or disconnected position.

6) Padlocking device: a padlocking provision accessory is

available to prevent access to the racking shaft, prevent-

ing movement of the breaker between the disconnected,

test and connected positions. (Not shown.)

7) Lifting bar: a lifting bar is available as an accessory, and

should be used to assist in safe handling of the drawout

breaker.

8) Manual motor cut-off switch: provided as standard

– prevents motor charge when racking breaker in from

disconnect to test position.

Other

• Drawout interlock: this interlock will trip a closed breaker

before the primary disconnects are engaged or disen-

gaged in the event that the wrench interlock is intention-

ally defeated.

• Drawout mechanism: a racking shaft powers a centrally

mounted power screw, through a chain drive, into a ﬁxed

nut in the substructure. A special speed wrench is avail-

able with an integral ½” square drive socket. The wrench is

used for racking the breaker in and out of the substructure.

• Rejection feature: a built-in rejection feature prevents

insertion of a breaker into an incorrect substructure. This

prevents either: insertion of a standard break breaker into

a Hi-Break breaker substructure, or insertion of a higher

ampere rated breaker into a lower ampere rated substruc-

ture, or both.

• Shutters: shutters are available as an accessory to protect

personnel from inadvertently touching the primary stabs of

an energized switchboard when the drawout breaker unit

is removed.

• By-pass switch: a by-pass switch accessory has NO

and NC single-pole double-throw (SPDT) contacts, which

change state when the breaker is racked from the con-

nected to the test position. The switch is available in 2, 4,

and 6-contact modules.

• Substructure: the substructure is a self-contained frame-

work serving as a stationary receptacle for Power Break

II drawout breaker types SPSDOS and SPHDOS. It permits

easy activation of a new circuit in a spare compartment

(hole ﬁller), rapid breaker replacement and simpliﬁes

inspection and maintenance. The substructure is designed

for convenient mounting, with holes provided for bolting on

a shelf of supports. Holes are also provided in the primary

stabs for bolting to busbars or terminal lugs. The substruc-

ture also has retractable rails which aid in the installation

of the drawout breaker.

Features and Characteristics

2000-amp drawout breaker lifting bar and TDQLR

2000-amp drawout breaker

Drawout breaker rotated for inspection

1600-ampere substructure for standard break breaker

Power+™ Trip Unit Systems*

The Power+ trip unit system for Power Break®II insulated

case breakers consist of the trip unit, the trip actuator, cur-

rent sensors and rating plugs. The term “trip unit system”

applies to the combination of these four components which

form the solid-state circuit breaker tripping system.

Power+ trip units provide a complete range of standard and

optional overcurrent and ground-fault protective functions.

Components of Power+ trip unit system

True RMS Sensing

The Power+ trip unit continues to use GE’s proven technique

of measuring true rms currents of both sinusoidal and har-

monically distorted waveforms. The frequent sampling (48

times per cycle per phase) allows precise calculations of true

rms current. The sampling rate allows waveform measure-

ments up to the 11th harmonic. GE’s true rms sensing avoids

potential underprotection or overprotection problems associ-

ated with peak-sensing tripping systems.

Accessory Integration

Four accessories are integrated through the Power+ trip unit.

Drop-in shunt trip (with or without lockout), bell alarms (with

or without lockout) and the undervoltage release modules ﬁt

into keyed pockets. They operate through the trip units, and

not through any external mechanisms. All accessory wiring

is pre-wired to secondary terminals, and no user wiring is

necessary. When activated, the shunt trip (with or without

lockout) and undervoltage release modules send a signal

to the trip unit to energize the trip actuator and open the

breaker.

* For availability on Power+ Trip units, contact your GE sales

engineer.

Trip Target Module (Optional)

Power+ trip target module (Target 02)

• View Button: Press the VIEW button to check the trip unit

status.

• Reset Button: Press the RESET button to clear any target

that is set.

• Battery Check: Target modules use two standard, 3V,

16mm x 1.6 mm, lithium batteries for viewing target

information. Battery life depends upon use, but may be

estimated at one year. When the batteries are energized,

depressing the VIEW button will illuminate either a set

target LED, i.e., LT or the BAT LED. Once target indica-

tors are cleared, battery status is indicated by the BAT

LED. Replacement batteries include Panasonic CR1616,

Eveready E-CR1616BP, or Duracell DL1616B, which may be

purchased commercially.

• Long-time pickup: The long-time pickup indicators moves

through two transitions. As the current in any phase

reaches 95% of its setpoint, the LTPU LED begins to ﬂash.

As current increases, ﬂashing frequency increases, until

100% of the pickup point is reached. At that moment, the

LTPU LED stays on continuously until the long-time delay

times out. Once the breaker has tripped on long-time, the

OVL target will be stored in memory. To view the trip, press

the VIEW button. To clear the target, press the RESET but-

ton.

• Short-time and instantaneous trips: Short–time and

instantaneous trips share the same trip target. The LTPU

LED is not illuminated, since the time intervals between

pickup and tripping are too short for either function. Once

the breaker has tripped on short-time or instantaneous,

the short target will be stored in memory. To view the trip,

press the VIEW button. To clear the target, press the RESET

button.

• Ground fault trip (Target02 only): The trip target for a

ground fault is the GF LED. To view the trip, press the VIEW

button. To clear the target, press the RESET button.

• Health monitor: Trip unit health status “okay” is illus-

trated by slow blinking of the LTPU LED. It may be seen by

depressing and holding the VIEW button. Sufﬁcient power

must be supplied to the trip unit via external test kit, power

pack, or current transformers for the health monitor to be

operational.

Power+™Trip Units

Power+™ Trip Units

Operation Of Power+™ Trip Units

Block diagram of Power+ trip unit

Power+ trip units have a variety of standard and optional

functions. The block diagram shows a fully conﬁgured

Power+ trip unit with ground-fault protection. The current

sensors are special current transformers that provide the trip

unit with its operating power. Interchangeable rating plugs

act as scalars for the outputs of the current sensors, as well

as establish the current rating of individual breakers. When

a four-wire system is used and ground-fault protection is

called for, an external neutral sensor is necessary.

Analog current signals are converted to digital values, and

are measured and compared with established trip settings

in the microprocessor’s memory. Any overcurrent or ground

fault condition that exceeds pre-set conditions produce a trip

signal from the microprocessor to the trip actuator. The trip

actuator is a low-energy, positive-action tripping device. The

low-level trip signal counteracts the strength of the actua-

tor’s permanent magnet, and allows a spring to unseal the

magnet and trip the breaker.

Both the shunt trip and undervoltage release (UVR) acces-

sories also produce trip signals to the trip actuator when

energized. The two bell alarms operate only as a result of an

overcurrent trip condition.

Standard And Optional Protective Functions

Standard and optional protective functions for Power+

trip units are shown below. The breaker settings are pro-

grammed in multiples of “X” (rating plug amp values), “S”

(current sensor amp rating values), and “C” (the long-time

setting in amps–multiply long-time setting by rating plug

amp rating).

Standard

• Adjustable Long-Time (L) Pickup, 0.5 – 1.0X, with four delay

bands.

• Adjustable Instantaneous (l) Pickup, 1.5 – 15X.*

Options

• Overload, Short Circuit, and Short-Time local trip indicators

with overload pickup warning and health monitors.

• Adjustable Short-Time (S) Pickup, 1.5 -9.0C, and delay (3

bands) with l²t ON/OFF selection.

• Adjustable Ground Fault (G) Pickup, 02. 0 - 0.6S, and delay*

(3 bands) with l²t ON/OFF selection and trip indicator.

• Upgradeable Ground Fault function with use of appropri-

ate ground rating plug.

* Limited by breaker frame size above 2000A.

Long-Time Protective Functions

Long-Time Function / Current Setting (Standard)

The adjustable long-time setting is based on multiples of “X”,

the rating plug amp rating. There are 7 possible settings from

50% to 100% of rating plug amps. This setting establishes

the current setting of the breaker, which is the current the

breaker will carry continuously without tripping. Multiplying

the long-time setting by the rating plug value establishes the

value of “C”. For example, a breaker with a 95% long-time

setting and 500-amp rating plug (X), would have a 475-amp

current setting, or value of C.

(Long-time current setting (C) = (0.50 to 1.00) x rating plug (X))

Long-time function or current setting

Long-Time Delay (Standard)

Long-time delay varies the time it will take the breaker to trip

under sustained overload conditions. It permits the breaker

to ride through momentary predictable overloads (e.g., mo-

tor starting) without tripping. There are 4 time bands that

provide nominal delays from 3 to 25 seconds at 600% of the

breaker’s current setting, or value of C.

Long-time delay

Instantaneous Function (with Power+ Trip Units)

All Power Break® II breakers have the standard instanta-

neous trip function. The instantaneous trip point establishes

the value of current that will trip the breaker without inten-

tional time delay. Instantaneous trip times are 50 millisec-

onds, or less. Instantaneous trips are the result of severe

overcurrent or short-circuit conditions, and damage to the

power system is minimized by immediate tripping. Standard

settings are adjustable in multiples of the rating plug amp

value (X). See Table 11.1 for allowable values. The trip unit will

limit the instantaneous trip level so that the breaker with-

stand rating is not exceeded. Maximum setting is dependent

on breaker frame size.

Standard instantaneous function

Short-Time Functions (Optional)

Short-Time Pickup

The short-time pickup function controls the level of high cur-

rent the breaker will withstand for short periods of time to

allow downstream devices to clear faults without tripping the

breaker. Settings are adjustable in increments of the breaker

current setting (C). See Table 11.1 for allowable values. If the

instantaneous setting is set for lower values of current than

the short-time function, the instantaneous function prevails.

Short-time pickup function

Power+™ Trip Units

Tabe 11.1

Power+™ Trip Unit Characteristics

Envelope

Size

Frame Max.

Amp Rating

Sensor Rating (Amps)

(S)

Long-Time Short-time

Current Setting ©

(Pick-up) Multiple of

Rating Plug Amps (X)

Delay  Seconds

(4 Bands)

Pick-up (Multiple of

Current Setting) (C)

Delay Seconds

(3 Bands)

2000

800 200, 400, 800

0.5, 0.6, 0.7, 0.8, 0.9,

0.95, and 1.0

2.4, 4.9, 9.8, 20

.5, 2.0, 2.5, 3.0,4.0, 5.0,

7.0 and 9.0

l²T in .10, .21, .35

1600 800, 1000, 1600 2.4, 4.9, 9.8, 20

2000 2000 2.4, 4.9, 9.8, 20

l²T out .10, .21, .35

3000 2500, 3000 1000, 2000, 2500, 3000 2.4, 4.9, 9.8, 20

4000 4000 4000 2.4, 4.9, 9.8, 20

Trip Unit Characteristics (continued)

Envelope Size Adjustable Instantaneous

Pick-Up without ST (Multiple

of Rating Plug Amps) (X)

Adjustable Instantaneous

Pick-Up with ST (Multiple of

Rating Plug Amps) (X)

Ground Fault

Pick-Up (Multiple of Sensor Amp Rating) Delay Seconds

(3 Bands)

2000

1.5 thru 10.0 1.5 thru 15.0 0.20 thru 0.60

l²T in .10 , .21, .35

1.5 thru 10.0 1.5 thru 15.0 0.20 thru 0.60

3000 1.5 thru 10.0 1.5 thru 13.0 0.20 thru 0.37 l²T out .10, .21, .35

4000 1.5 thru 9.0 1.5 thru 9.0 0.20 thru 0.30

 Time delay shown at 600% of current setting at lower limit of band. X= Rating plug amps

 Time delay shown at lower limit of each band. All pick-up tolerances are ±10%. S= Sensor amp rating

 Time delay shown at lower limit of each band. Ground fault pick-up not to exceed 1200 amps. C= Long-time current setting (pick-up)

 Time delay shown at 200% of pick-up at lower limit of band.

Power+™ Trip Units

Short-Time Delay

Short-time delay is always provided when short-time pickup

is ordered. Short-time delay provides additional reﬁnement in

providing coordination between upstream and downstream

protective devices. There are three time delay bands that

provide delays from 100 ms to 350 ms of 1 (MIN), 2 (INT), 3

(MAX).

Short-time delay with l²t OUT

Selectable Short-time l²t Function

Selectable short-time l²t is always provided with the short-

time option. The l²t helps the solid-state trip unit coordinate

with downstream thermal magnetic devices or fuses. This

function impacts the shape of short-time and short-time

delay time current curves, and may be programmed either IN

or OUT.

Short-time delay with l²t IN

Normal Ground-Fault Protection (Optional)

Ground-Fault Protection

The ground-fault function in the Power+™ trip unit is ﬁeld up-

gradeable. It is enabled and adjusted through the rating plug.

To upgrade to the ground-fault option, simply remove the

non-ground fault rating plug that does not have the ground-

fault option and install a ground-fault rating plug. A ground-

fault is an unintentional current ﬂow from a circuit through

a conductive path to ground. Ground faults usually have

intermittent or very low values of current ﬂow, as depicted in

Graph A, and are not detected by long-time overload protec-

tion.

Some ground-fault trip systems may not detect this type

of fault because the intermittent nature of the fault never

exceeds the trip threshold as illustrated in Graph B.

The Power+ trip unit detects and integrates (adds a series of

arcing and intermittent current pulses) the low-level cur-

rent of a ground fault. This integration function provides a

memory response for ground faults to achieve preferred

ground-fault protection as shown in Graph C.

Ground-fault memory circuit

The NEC requires that the maximum ground-fault setting not

exceed 1200 amps. Ground-fault protection includes pickup

setting, ground-fault delay settings and selectable l²t func-

tion.

Ground-fault pick-up settings are based on multiples of S,

the current sensor rating. The lowest setting is 20% of S, and

the highest setting is based on current sensor amp ratings,

such that the maximum setting does not exceed 1200 amps.

There are three ground-fault delay bands of 1 (MIN), 2 (INT), 3

(MAX) ranging from 100 ms to 350 ms. The l²t function adds

an l²t slope to the square corner of the ground-fault time

current curve transition, from pickup to the constant delay

bands, to improve coordination with downstream devices.

Ground-fault pickup and ground fault time delay

Power+™ Trip Units

Rating Plugs

Power+™ trip unit rating plug

A new interchangeable rating plug is used in the Power+™

trip unit across the entire Power Break® II breaker product

line. Rating plugs are the key devices that establish the cur-

rent rating of the breaker. They provide an essential scaling

function for the unit’s microprocessor, and ensure maximum

accuracy. They also provide an external jack for connection

to an external battery pack, or TVRMS2 test kit.

Rating plugs have rejection features that allow them to be

inserted only with breakers containing the correct current

sensors. Rating plugs for the Power+ trip unit cannot be used

with Spectra RMS™ molded case circuit breakers or with

MicroVersaTrip Plus™ and MicroVersaTrip PM™ trip units. See

Table 13.1 below.

Table 13.1

Rating Plug And Current Sensor Rating

Envelope

Size

Frame

Max

Rating

(Amps)

Sensor

Rating

(Amps) (S)

Sensor Rating

Plug Amps (X)

2000 800 200 100, 150, 200

400 200,225,250,300,400

800,1600 800 400, 450, 500, 600, 700, 800

1600 1000 600, 800, 1000

1600 800, 1000, 1100, 1200, 1600

2000 2000 1000, 1200, 1500, 1600, 2000

3000 2500 1000 600, 800, 1000

2000 1000, 1200, 1500, 1600, 2000

2500 1600, 2000, 2500

3000 3000 2000, 2500, 3000

4000 4000 4000 1600, 2000, 2500, 3000, 3600, 4000

S= Sensor amp rating X= Rating plug amp

Current Sensors

Typical toroidally wound sensor

Toroidally wound current sensors are furnished for all major

protective functions, and for use with Power+™ and Micro-

VersaTrip PM trip units. Current sensors are factory installed

and are not changeable in the ﬁeld. There are 11 current

ratings for the Power Break II breaker line through 4000

amps. See Table 13.1 for current ratings. Rating plugs must

be coordinated with the current sensor rating (S) listed on the

face of the rating plug.

The Enhanced MicroVersaTrip Plus™ And

MicroVersaTrip PM™ Trip Unit Systems

The Enhanced MicroVersaTrip Plus and MicroVersaTrip PM

trip unit systems for Power Break® II insulated case breakers

consist of the trip unit, the trip actuator, current sensors and

rating plugs. The term “trip unit system” applies to the combi-

nation of these four components which form the solid-state

circuit breaker tripping system.

MicroVersaTrip Plus trip units provide a complete range of

standard and optional overcurrent and ground-fault pro-

tective functions. MicroVersaTrip PM units add advanced

metering, communications and protective relaying functions.

MicroVersaTrip PM trip units are designed to function as part

of the GE POWER LEADER™ Power Management System.

Components of MicroVersaTrip Plus trip unit system

True RMS Sensing

Enhanced MicroVersaTrip Plus and MicroVersaTrip PM trip

units continue to use GE’s proven technique of measuring

true rms currents (and voltages for MicroVersaTrip PM trip

units) of both sinusoidal and harmonically distorted wave-

forms. The frequent sampling (64 times per cycles per phase)

allows precise calculations of true rms current. The sampling

rate allows waveform measurement up to the 31st harmonic

to achieve accuracies of 99%. GE’s true rms sensing avoids

potential underprotection or overprotection problems associ-

ated with peak-sensing tripping systems.

Enhancements to MicroVersaTrip Plus

and MicroVersaTrip PM Trip Units

Enhancements include several new functions that simplify

programming and make fault displays easier to read and

interpret.

Batteries

Replaceable, long-life lithium batteries provide programming

and display power to the trip unit’s LCD on command. The

trip unit can be removed from the breaker, and all setpoints

can be deﬁned at a technician’s desk. The integral conserva-

tion feature extends battery life. The batteries are automati-

cally shut off when no programming operation or display

request is called for within 30 seconds after the last key is

pressed. The batteries also enable the user to read fault

displays on an open breaker.

The battery is intended to power the Trip Unit when it is

otherwise unpowered. At low currents the Trip Unit Display is

not active. Pressing the BATTERY key under these conditions

will not activate the display. The MicroVersaTrip Plus trip unit

display is on as long as a small amount of current (mini-

mum 20% of current sensor rating) is ﬂowing in the breaker

current sensors. The displays of installed MicroVersaTrip PM

units are visible at all times due to an external +24Vdc power

supply accessory.

The batteries are not required to maintain programmed

settings, or store trip information. They simply provide a

local power source to energize the programmer when no

other source of power is available. All setpoints, time delays

and other programming functions are stored in non-volatile

memory within the trip unit’s microprocessor.

Batteries have a two-year life under normal use. They are

user-replaceable.

LCD

The LCD – liquid crystal display – has increased contrast to

improve legibility in poor lighting conditions. New interna-

tional displays symbols are use for various programming

functions (e.g., “l>>” for short circuit and “l>” for overload).

Trip Operations Counter

The enhanced MicroVersaTrip Plus and MicroVersaTrip PM

Trip unit also store and display the total number of trips due

to long time overloads, short time and instantaneous short

circuits, and ground faults. Each display stores up to 256

operations per trip category before resetting to zero. Each

counter can be individually reset through the keypad.

Accessory Integration

Four accessories are integrated through the MicroVersaTrip

Plus and MicroVersaTrip PM trip units. Drop-in shunt trip (with

or without lockout), bell alarms (with or without lockout) and

the undervoltage release modules ﬁt into keyed pockets.

They operate through the trip units, and not through any

external mechanism. All accessory wiring is pre-wired to

secondary terminals, and no user wiring is necessary. When

activated, the shunt trip (with our without lockout) and un-

dervoltage release modules send a signal to the trip unit to

energize the trip actuator and open the breaker.

MicroVersaTrip Plus™ and PM™ Trip Units

Operation of MicroVersaTrip Plus™

Trip Units

Block diagram of MicroVersaTrip Plus trip unit

MicroVersaTrip Plus units have a menu of standard and op-

tional functions. The block diagram shows a fully conﬁgured

MicroVersaTrip Plus trip unit with ground-fault protection.

The current sensors are special current transformers that

provide the trip unit with its operating power. Interchange-

able ratings plugs act as scalars for the outputs of the

current sensors, as well as establish the current rating of

individual breakers. When a four-wire system is used and a

ground-fault protection is called for, an external neutral sen-

sor is necessary.

Analog current signals are converted to digital values, and

are measured and compared with established trip settings

in the microprocessor’s memory. Any overcurrent or ground

fault condition that exceeds pre-set conditions produces a

trip signal from the microprocessor to the trip actuator. The

trip actuator is a low-energy, positive-action tripping device.

The low-level trip signal counteracts the strength of the

actuator’s permanent magnet, and allows a spring to unseal

the magnet and trip the breaker.

Both the shunt trip and undervoltage release (UVR) acces-

sories also produce trip signals to the trip actuator when en-

ergized. The user may program each of the two bell alarms,

independently, to operate as a result of any combination of

overcurrent (including ground fault), shunt trip and under-

voltage release.

Standard And Optional Protective Functions

Standard and optional protective functions for MicroVersa-

Trip Plus trip units are shown below. The breaker settings are

programmed in multiples of “X” (rating plug amp values), “S”

(current sensor amp rating values), “C” (the long-time setting

in amps – multiply long-time setting by rating plug amp rat-

ing), and “H” (the short-time withstand rating of the breaker).

Standard

• 3-phase Ammeter

• Adjustable Long-Time (L) pickup, 0.5 – 1.0X, with four

delay bands

• Adjustable instantaneous (l) pickup, 1.5 – 15X

• Overload, Short Circuit, and Short-Time local trip indicators

with overload pickup warning

• Test set initiated trip

Optional Functions

• Adjustable Short-Time (S) pickup, 1.0 -9.0C and delay

(3 bands) with l²t ON/OFF selection

• Adjustable Ground Fault (G) pickup, 0.2-0.6S and delay

(3 bands) with l²t On/Off selection and trip indicator

• High-range instantaneous ﬁxed at 1.0H

• Zone selective interlocking for Ground Fault or Ground

Fault and Short-Time

• Defeatable Ground Fault function (non-UL)

MicroVersaTrip Plus™ and PM™ Trip Units

SETUP

PICKUP

xln

SETUP

INST

PICKUP

xln

SETUP

PICKUP

xLT

SETUP

DELAY

MicroVersaTrip Plus™ and PM™ Trip Units

Long-Time Protective Functions

Long-Time Function/Current Setting (Standard)

The adjustable long-time setting is based on multiples of

“X”, the rating plug amp rating. There are 11 possible setting

from 50% to 100% of rating plug amps, in 5% steps. This

setting establishes the current setting of the breaker, which

is the current the breaker will carry continuously without

tripping. Multiplying the long-time setting by the rating plug

value establishes the value of “C”. For example, a breaker

with a 95% long-time setting and 500 amp rating plug (x)

would have a 475-amp current setting, or value of C.

(Long-time current setting (C) = (0.50 to1.00) X rating plug (X))

Long-time function or current setting

Long-Time Delay (Standard)

Long-time delay varies the time it will take the breaker to trip

under sustained overload conditions. It permits the breaker

to ride through momentary predictable overloads (e.g., mo-

tor starting) without tripping. There are 4 time bands that

provide nominal delays from 3 to 25 seconds at 600 % of the

breakers current setting, or value C.

Long-time delay

Instantaneous Function (Standard)

All Power Break® II breakers have either the standard in-

stantaneous trip function or the “high range” instantaneous

function. The instantaneous trip point establishes the value

of current that will trip the breaker without intentional time

delay. Instantaneous trip times are 50 milliseconds, or less.

Instantaneous trips are the result of severe overcurrent or

short-circuit conditions, and damage to the power systems is

minimized by immediate tripping. Standard settings are ad-

justable in increments of .5 of X of the rating plug amp value

(X). See Table 17.1 for allowable values. The trip unit will limit

the instantaneous trip level so that the breaker withstand

rating is not exceeded.

Standard instantaneous function

Short-Time Functions (Optional)

Short-Time Pickup

The short-time pickup functions controls the level of high

current the breaker will withstand for a short period of time

to allow downstream devices to clear faults without tripping

the breaker. Settings are adjustable in increments of 50% of

the breaker current setting (C). See Table 17.1 for allowable

values. If the instantaneous setting is set for lower values of

current than the short-time function, the instantaneous func-

tion prevails.

Short-time pickup function

MicroVersaTrip Plus™ and PM™ Trip Units

Table 17.1

MicroVersaTrip Plus™ And MicroVersaTrip PM Unit Characteristics

Envelope

Size

Frame

Max. Amp

Rating

Sensor Rating

(Amps)

(S)

Long - Time Short - Time

Current Setting (C)

(Pick-Up) Multiple of

Rating Plug Amps (X)

Delay

Seconds

(4 Bands)

Pick –up

(Multiple of Current

Setting) (C)

Delay

Seconds (3 Bands)

2000

800 200,400,800

0.5 thru 1.0 in

increments of 0.05

2.4, 4.9, 9.8, 2.0

1.5 thru 9.0 in

increments of 0.5

l²T in 0.40 for all

bands

1600 800,1000,1600 2.4, 4.9, 9.8, 2.0

2000 2000 2.4, 4.9, 9.8, 2.0

l²T out .10, .21, .35

3000 2500, 3000 1000,2000, 2500, 3000 2.4, 4.9, 9.8, 2.0

4000 4000 4000 2.4, 4.9, 9.8, 2.0

Trip Unit Characteristics (continued)

Envelope

Size

Adjustable Instantaneous

Pick-up without ST

(Multiple of Rating

Plug Amps)

(X)

Adjustable Instantaneous

Pick-up with ST

(Multiple of Rating

Plug Amps)

(X)

High Range

Instantaneous

(Multiple of Frame

Short-Time Rating)

(H)

Ground Fault

Pick-Up (Multiple of Sen-

sor Amp Rating)

Delay

Seconds (3 Bands)

2000

1.5 thru 10.0 in

0.5 increments

1.5 thru 15.0 in

0.5 increments

1.0

0.20 thru 0.60 in

increments of 0.01 l²T in 0.40 for all

bands

1.5 thru 10.0 in

0.5 increments

1.5 thru 15.0 in

0.5 increments

0.20 thru 0.60 in

increments of 0.01

1.5 thru 10.0 in

0.5 increments

1.5 thru 15.0 in

0.5 increments

0.20 thru 0.60 in

increments of 0.01

I²T out .10, .21, .35

3000 1.5 thru 10.0 in

0.5 increments

1.5 thru 13.0 in

0.5 increments

0.20 thru 0.37 in

increments of 0.01

4000 1.5 thru 9.0 in

0.5 increments

1.5 thru 9.0 in

0.5 increments

0.20 thru 0.30 in

increments of 0.01

 Time delay shown at 600% of current setting at lower limit of band X = Rating plug amps

 Time delay shown at lower limit of each band. All pick-up tolerances are ± S = Sensor amp rating

 Time delay shown at lower limit of each band. Ground fault pick-up not to exceed 1200 amps C= Long-time current setting (pick-up)

 Time delay shown at 200 % of pick-up at lower limit of band H= Short-time rating

xln

SETUP

I2T

DELAY

xln

SETUP

I2T

DELAY

SETUP

PICKUP

xCT

SETUP

GF I2T

DELAY

Short-Time Delay

Short-time delay is always provided when short-time pickup

is ordered. Short-time delay provides additional reﬁnement in

providing coordination between upstream and downstream

protective devices. There are three time delays that provide

delays from 100 ms to 350 ms of 1 (MIN), 2 (INT), 3(MAX).

Short-time delay with I²t OUT

Selectable Short Time I²t Function

Selectable short-time I²t is always provided with the short-

time option. The I²t helps the solid-state trip unit coordinate

with downstream thermal magnetic devices or fuses. This

function impacts the shape of short-time and short-time

delay time current curves, and may be programmed either

IN or OUT.

Short-time delay with I²t IN

High-Range Instantaneous (Optional)

The high-range instantaneous function is for special applica-

tions where all coordination is based on adjustments of long

and short time. The instantaneous trip setting is ﬁxed at “H”

– breaker’s short-time withstand rating.

Normal Ground-Fault Protection (Optional)

Ground-Fault Protection

A ground fault is an unintentional current ﬂow from a circuit

through a conductive path to ground. Ground faults usu-

ally have intermittent or very low values of current ﬂow,

as depicted in Graph A, and are not detected by long-time

overload protection.

Some ground-fault trip systems may not detect this type

of fault because the intermittent nature of the fault never

exceeds the trip threshold as illustrated in Graph B.

The MicroVersaTrip Plus™ and MicroVersaTrip PM™ trip units

detect and integrate (add a series of arcing and intermittent

current pulses) the low-level current of a ground fault. This

integration function provides a memory response for ground

faults to achieve preferred ground fault protection as shown

in Graph C.

The NEC requires that the maximum ground-fault setting not

exceed 1200 amps. Ground-fault protection includes pickup

setting, ground-fault delay settings and selectable l²t func-

tion.

Ground fault memory circuit

Ground fault pickup and ground fault time delay

Ground-fault pickup settings are based on multiples of S,

the current sensor rating. The lowest setting is 20% of S, and

the highest setting is based on current sensor amp ratings,

such that the maximum setting does not exceed 1200 amps.

There are three ground-fault delay bands of 1 (MIN), 2 (INT) 3

(MAX) ranging from 100 ms to 350 ms. The l²t function adds

an l²t slope to the square corner of the ground-fault time

current curve transition, from pickup to the constant delay

bands, to improve coordination with downstream devices.

MicroVersaTripPlus™ and PM™ Trip Units

Defeatable Ground-Fault Protection (Optional)–

Not UL Listed

A defeatable ground-fault protection is offered for users who

want the ability to enable or disable ground-fault protec-

tion depending on special circumstances. When this type of

ground-fault protection is ordered, in addition to the normal

ground-fault settings, the user can enable or disable ground-

fault protection during programming. To disable this kind of

ground-fault protection, set the delay to OFF.

Zone Selective Interlocking (Optional)

Traditional means of obtaining selectivity between main and

feeder breakers is to set the furthest downstream device

with the lowest time delays, and increase time delays of

upstream devices. The disadvantage of this is that upstream

portions of the system must endure high values of fault cur-

rent until time-out occurs.

Multi-zone selective interlocking

MicroVersaTrip Plus™ and MicroVersaTrip PM™ trip units

provide coordination between the ﬁrst breaker and the im-

mediate upstream breaker. When the downstream breaker

detects a fault, it signals the upstream device to shift to its

preset time delay band, allowing the downstream device to

clear the fault. Without a signal from a downstream breaker,

an upstream breaker will respond on the minimum delay

band. For a fault between these two breakers, the upstream

would clear the fault on the minimum delay band since no

signal is being sent by the downstream breaker.

Zone Selective interlocking is available for either ground fault

only, or both ground-fault and short-time functions. The

zone selective interlocking feature requires a zone selective

interlock module (ZSIM) catalog number TIM1. The module is

an intermediate control device used between upstream and

downstream circuit breakers to communicate with the short-

time and ground-fault zone selective interlock functions of

the MicroVersaTrip Plus and MicroVersaTrip PM units. The

module requires 120/208/240 VAC, 15 VA maximum.

Operation of MicroVersaTrip PM Trip Units

MicroVersaTrip PM trip units add communications capability

with remote host computers and the GE POWER LEADER™

Power Management System. In addition, the user can choose

to add metering, protective relaying or both. In the block dia-

gram (page 20) of the MicroVersaTrip PM trip unit, note that

there are two additional sets of inputs – voltage inputs from

each phase and a +24 Vdc input from an external power

supply. Additionally, there is a communication input/output

link to the POWER LEADER system.

Voltage Inputs

Voltage inputs to the MicroVersaTrip PM trip unit are required

for both metering and protective relays. Voltage inputs

require three delta or wye-connected potential transformers

with 120 Vac secondaries, and an external voltage module

that further conditions the voltage signals for use by the trip

unit’s microprocessor. A single set of external voltage mod-

ules can serve the requirements of up to 20 trip units.

MicroVersaTripPlus ™ and PM™ Trip Units

+24 Vdc Input

MicroVersaTrip PM trip units require an external +24 Vdc

power supply to furnish power to the communication

network. In addition, this power supply energizes the LCD

display, so that low current values, voltage values and trip

targets are displayed without use of the internal batteries.

However, batteries are supplied with MicroVersaTrip PM trip

units for cold set-ups and viewing targets in the event the

+24 Vdc power supply is interrupted. A single +24 Vdc power

supply can supply the power requirements of up to 16 Micro-

VersaTrip PM trip units.

MicroVersaTrip Plus™ and PM™ Trip Units

Communications Output

The communications network uses a pair of shielded, twisted

wires to connect individual devices to the POWER LEADER™

system. Connection distances up to 1000 ft. can be made

without repeaters. All communication network wiring within

the breaker is pre-wired to dedicated secondary terminals.

Integration to Modbus RTU networks requires the use of a

POWER LEADER Modbus Concentrator.

MicroVersaTrip PM Microprocessor

Block diagram of MicroVersaTrip PM trip unit

Metering

When the metering function is selected, a number of

standard metering parameters can be viewed on the LCD

display. All of these values are communicated to the POWER

LEADER™ Power Management System. The accuracy of the

metering functions is constrained by the physical size of the

current sensors. Consequently, all metering functions are

designed for load management decisions, and are not a

substitute for utility revenue metering equipment.

• Current: All trip units, including MicroVersaTrip Plus™, pro-

vide metering of individual phase currents. The user can

select phases 1, 2, or 3. Current displays automatically shift

from amps to kiloamps above 999 amps. The minimum

current display resolution is in tenths of an amp (e.g., 512

A).

• Voltage: The metering display of four wire systems can

read both line-to-neutral and line-to-line voltage display

for each phase. The smallest resolution of the voltage

display is one volt (e.g. 277V, or 276V).

• Energy: The energy display indicates the amount of real

power that has passed through the breaker. The display

has three-digit resolution, and automatically scales the

display from kWh to MWh to GWh. Normal power ﬂow can

be selected as either load-line or line-load in the setup

mode. Once normal ﬂow is conﬁgures, energy values will

accumulate in the positive direction. For certain applica-

tions where power may ﬂow in either direction, such as tie

breakers, energy may display a negative value.

• Real power: Real power in units of kW or MW can be

shown on command on the LCD display.

• Volt-amperes (or total power): “Total power” or volt-am-

peres in units of kVA or MVA can be viewed on command

on the LCD display.

MicroVersaTrip Plus™ and PM™ Trip Units

• Demand: Demand in units of kW or MW can be displayed.

The monitoring time period can be varied from 5 to 60

minutes, in increments of 5 minutes. The display provides a

rolling average of power over the scheduled time interval.

• Peak demand: Peak demands in units of kW or MW can be

displayed. This value indicates the highest power demand

reached since the start of demand measurements, or since

reset. The peak demand value can be reset to the present

demand via the keypad.

Protective Relaying

When protective relaying functions are selected, any combi-

nation of the following protective relays can be enabled. All

relay functions combine both an adjustable setpoint and an

adjustable discrete (not inverse) time delay. All time delays

are adjustable from 1 to 15 seconds in increments of 1 sec-

ond. All tripping is performed through the trip unit. The user

can conﬁgure the trip unit to activate the bell alarm only, the

bell alarm with lockout, or neither, in response to a protective

relay (or overcurrent/ground-fault) trip.

• Undervoltage: Undervoltage protection may be set from

50% to 90% of the true rms nominal voltage in increments

of 1%.

• Overvoltage: Overvoltage protection may be set from

110% to 150% of the true rms nominal voltage in incre-

ments of 1%.

• Voltage unbalance: Voltage-unbalance protection com-

pares the lowest or highest phase voltage with the other

two, and initiates a trip if the difference exceeds the

setpoint. True rms voltages are computed for each phase.

The range of trip settings varies from 10% to 50% in incre-

ments of 1%.

• Current unbalance: Current-unbalance protection com-

pares the true rms current in either the highest or lowest

phase with the true rms current in the other two phases. A

trip is initiated if the difference exceeds the setpoint. The

range of trip settings varies from 10% to 50% in incre-

ments of 1%.

• Power reversal: The Power Break® II breaker may be set

so that “positive” power ﬂow can be in either direction (i.e.,

from line to load, or vice versa). Reverse power protection

is set in units of kW. Reverse power setpoints vary from

10kW to 990kW in increments of 10kW.

• Enable/disable relays: To disable any of the protective

relay functions, set the time delay for that function to OFF.

Setting the time delay to any discrete value enables the

relay.

Table 21.1 Trip Unit Metering Display Accuracy

Value Breaker Full Scale

Accuracy

System Full Scale

Accuracy

Current, rms –A, kA ±2.5% ±2.5%

Voltage, rms –V

Phase-Phase, Phase-Neutral

N/A ± 1.5%

Energy –kWh, MWh, GWh N/A ±4.0%

Demand – kW, MW N/A ±4.0%

Peak Demand- kW, MW N/A ±4.0%

Real Power – kW, MW N/A ±4.0%

Total Power – kVA, MVA N/A ±4.0%

Frequency N/A ±1 Hz

Time Delay N/A ±1 sec

 Includes trip unit, breaker, current sensors and rating plug. Accuracy is based on

loading range of 20% to 100% of breaker current sensor rating.

 Includes trip unit, breaker, current sensors, rating plug, plus Voltage Module (poten-

tial transformers, control power voltage conditioner). Accuracy is based on loading

range of 20 % to 100 % of breaker current sensor rating.

METER

PICKUP

STATUS

FAULT

I>>

STATUS

FAULT

I>>

INST

xCT

STATUS

FAULT

STATUS

GF OPS

Programming Trip Units

All MicroVersaTrip Plus and MicroVersaTrip PM trip units for

Power Break® II breakers use the same programming key-

pads. All functions ordered are selectable and displayed.

Programming display and keypad

• Function: Selects the mode of the display (Setup, Metering

or Status)

• Select: Chooses the next item for display. All modes have

a sequential menu that allows the user to step from one

function to the next.

• Battery: Energizes the internal battery circuit and the LCD.

• Value: Allows changing a setpoint, or changes a meter-

ing display from line-to-line or line-to-neutral, or select

between phases 1, 2 or 3.

• Enter: Stores setpoint in the trip unit’s non-volatile

memory.

Trip Targets – Overcurrent

and Ground Fault

Trip targets for protective functions use international sym-

bols, and are shown on the LCD when in the Status mode.

• Normal: When all protective circuits are within normal

limits, the term “OK” is visible in the LCD display.

• Long-time trip: The long-time trip display moves through

two transitions. As the current in any phase reaches 95%

of its setpoint, the word “PICKUP” begins to ﬂash. As cur-

rent increases, ﬂashing frequency increases, until 100%

of the pickup point is reached. At that moment, PICKUP

remains ON, continuously, until the long-time delay times

out. Once the breaker has tripped on long time, the symbol

“ |>” appears in the LCD display to indicate a breaker over-

load. In addition to this target, the display indicates the trip

status with the word, “FAULT.” The display shows the type

of trip “LT”, the phrase the fault occurred on, and the mag-

nitude of the fault current. The trip information is displayed

until cleared by the user.

Long-time trip imminent Breaker tripped on long time

• Short-time and instantaneous trips: Short-time and

instantaneous trips share the same trip target. The PICKUP

target is not illuminated, since the time interval between

pickup and tripping are so short for either function. In the

DISPLAY mode, the trip target for a short-time or instanta-

neous trip is “|>>.”

Breaker tripped Breaker tripped on

on short time instantaneous

• Ground Fault Trip: The trip target for a ground fault trip is

illumination of the letters “GF”.

Breaker tripped on ground fault

Trip Operations Counter

The trip unit stores the number of trip operations for long-

time, short-time, instantaneous and ground fault. Up to

256 counts of each trip operation are stored in memory.

Manual reset through the keypad is possible at any time. The

electronic trip operation counter does not store shunt trip,

undervoltage release or protective relay trips. An optional

mechanical operations counter is available that counts

each open-and-close operation of the main contacts for any

reason.

Breaker showing counter

Trip Targets – Protective Relays

Trip targets for the enabled protective relays appear in the

status screen when they occur. Symbols used are:

• Undervoltage trip V<

• Overvoltage trip V>

• Unbalanced voltage DV

• Unbalanced current DI

• Power reversal

Trip Targets - Accessories

UVR and ST targets are displayed when a trip is caused by an

undervoltage release or shunt trip accessory. The display will

indicate with a ﬂashing target and the FAULT segment does

not display.

MicroVersaTrip Plus™ and PM ™Trip Units

Rating Plugs

The same interchangeable rating plugs are used in all of the

MicroVersaTrip Plus™ and MicroVersaTrip PM™ trip units

across the entire Power Break® II breaker product line. Rating

plugs are the key devices that establish the current rating of

the breaker. They provide an essential scaling function for the

unit’s microprocessor, and ensure maximum accuracy. They

also provide an external jack for connection to an external

battery pack.

Rating plugs have rejection features that allow them to be

inserted only with breakers containing the correct current

sensors. Rating plugs for the enhanced MicroVersaTrip Plus

and MicrosVersaTrip PM trip units cannot be use with Spectra

RMS™ molded case circuit breakers, but are compatible with

Power Break and Type AKR breakers with MicroVersaTrip Plus

and MicroVersaTrip PM trip units. See Table 23.1

MicroVersaTrip rating plug

Table 23.1

Rating Plug And Current Sensor Rating

Envelope

Size

Frame Max.

Rating

(Amps)

Sensor

Rating

(Amps)

(S)

Sensor Rating

Plug Amps (X)

2000

800 200 100, 150, 200

400 150, 0, 225 ,250, 300, 400

800,1600 800 300,400,450,500,600,700,800

1600 1000 400,600,800,1000

1600 600,800,1000,1100,1200, 1600

2000 2000 800,1000,1200,1500,1600,2000

3000 2500

1000 400,600,800,1000

2000 800,1000,1200,1500,1600,2000

2500 1600,2000,2500

3000 3000 2000,2500,3000

4000 4000 4000 1600,2000,2500,3000, 3600,4000

S= Sensor amp rating

X= Rating plug amps

Current Sensors

Toroidally wound current sensors are furnished for all major

protective functions and for use with MicroVersaTrip PM trip

units. Toroidal sensors, including a second air-core winding,

are provided with the high-range instantaneous function.

Current sensors are factory installed and are not changeable

in the ﬁeld. There are 11 current ratings for the Power Break

II breaker line through 4000 amps. See Table 23.1 for current

ratings. Rating plugs must be coordinated with the current

sensor rating (S) listed on the face of the rating plug.

Typical toroidally wound current sensor

Accessory Conﬁguration

Activation of the Bell Alarm – Alarm Only and Bell Alarm with

Lockout are controlled by switch setting on the rear of the

trip unit. To change the conditions which activate these ac-

cessories, conﬁgure the trip unit switch setting as described

below.

Rear of trip unit

Table 23.2

Accessory Switch Setting

Switch Factory

Setting

Function

1 Disable Shunt trip activates Bell Alarm – Alarm Only

2 Disable UVR Trip activates Bell Alarm- Alarm Only

3 Enable Protection trip activates Bell Alarm – Alarm Only

4 Disable Shunt Trip Activates Bell Alarm/ Lockout

5 Disable UVR trip activates Bell Alarm/Lockout

6 Enable Protection trip activates Bell Alarm/ Lockout

Accessories – Stationary and

Drawout Breakers

The complete line of Power Break® II breaker accessories

may be either factory installed or ﬁeld installed to meet user

needs. The electronic shunt trip (with or without lockout), the

bell alarm, the bell alarm with mechanical lockout, and the

undervoltage release modules drop in from the front of all

breakers. One of each of the above accessory modules can

be installed, and requires no ﬁeld internal wiring or breaker

disassembly. The accessory modules are interchangeable

across all frame sizes.

Auxiliary switch modules are available in groups of 4, 8, or

12, NO/NC single-pole, double-throw (SPDT) switches. Their

installation simply involves removal of breaker cover, instal-

lation of the switch module, routing of wiring and installation

of the pre-wired terminal block and re-installation of the

cover. Auxiliary switches are also interchangeable across all

Power Break II breaker frames.

Test Kit

The test kit, catalog number TVRMS2 is a portable, battery-

powered, test kit which provides for trip unit health checks

and functional trip and no-trip test. It also provides defeat

of the ground-fault function and can be used in conjunction

with high-current test equipment. The test kit can be used to

provide +24V power to the trip unit for cold set-up and view

of trip targets. This test kit is for use with Power+™, MicroVer-

saTrip Plus™ and MicroVersaTrip PM ™ trip units.

Electrical Operator

The electrical operator mounts inside the front cover of the

manually operated breaker. This accessory can be added

to any Power Break II breaker in the factory or the ﬁeld to

provide electrical spring charging. All breakers are pre-wired

to dedicated secondary terminals for easy ﬁeld installation.

When electrical operation is used, a remote close solenoid

and either a shunt trip or an undervoltage release accessory

are required for remote closing and opening.

The electrical operator can be wired to charge automatically

following a CLOSE operation, or to charge on command. A

remote charge indicator switch is integral to the electrical

operator. If control power is lost during the charging cycle,

spring charging can be completed manually using the pump

handle – no special tools or separate handles are required.

However, if the charge cycle is begun manually, it must be

competed manually. Any electrically operated breaker can

be operated manually.

The control power required for each motor operator may be

determined from Table 25.2. If several motor operators are

fed from the same source, it should be sized to accommo-

date all operators simultaneously, especially if they are wired

for automatic charge.

The voltage drop in source supply from no-load to motor

full-load current should not exceed 7% of nominal voltage.

Acceptable dc power supplies are: three-phase, full-wave

rectiﬁed ac; battery; dc generator or any other dc source with

a peak-to-peak ripple voltage of not more than 15% at rated

full-load current. Operating range of electrical operator: 90%

-110% of nominal rating. See wiring diagram on page 26.

Table 24.1

Electrical Operators

Catalog

Number

Voltage Rating

(50-60Hz)

Peak Inrush

(Amps)

Operating Time

(Seconds)

SPE024 24 Vdc 30.0 3

SPE048 48 Vdc 18.0 3

SPE072 72 Vdc 10.0 3

SPE125 125 Vdc 7.5 3

SPE120 120 Vac 8.0 3

SPE240 240 Vac 6.0 3

Accessories

Power Break II breaker electrical operator

Accessories

Remote Close Solenoid

This accessory is an electrically operated solenoid which,

when energized, closes the breaker. It is suitable for control

interlock schemes in which manual closing capability would

not be convenient or would be too slow. It is an optional ac-

cessory for a manually operated breaker, but is required for

an electrically operated breaker. The remote close accessory

is continuously rated and has an anti-pump feature which

prevents a motor operated breaker from repeatedly closing

into a fault. Closing control voltage must be removed and

re-applied for each breaker closure.

This accessory consists of an integral electronic control mod-

ule and the closing solenoid. When control voltage is applied

to the accessory, the electronic control module applies a

single pulse of current to the solenoid for approximately 0.25

seconds to drive the solenoid before shutting the current off

to a level of approximately 10mA. Voltage must be removed

and re-applied to reclose the breaker, thereby providing the

anti-pump feature.

This pulse approach allows the accessory to be continuously

rated. Control voltage must be removed for 2.5 seconds and

then reapplied each time the solenoid is to be energized.

Removal of the voltage for signiﬁcantly less than 2.5 sec-

onds will not reset the electronic control module and prevent

the solenoid from being energized. Applied control voltage

(closed circuit voltage at breaker terminals 34 and 16) must

be 85% to 110% of nominal. The solenoid will not energize if

voltage is ramped up to the acceptable range. Three-cycle

closing time, at nominal voltage, is standard and fulﬁlls the

requirements of generator synchronizing.

Table 25.2

Control Power Requirements For Motor Operators

Rated Voltage

(50-60 Hz)

Operating

Voltage Range

Peak Inrush

(RMS Amps)

Peak Full

Load Amps

Average Amps Charge Time

(Sec)

Recommended

Fuse (Slo-blow)

24 Vdc 21 – 27 Vdc 30.0 14.0 11.0 3 12A, 125V

48 Vdc 41 - 53 Vdc 18.0 7.0 4.5 3 7A, 125V

72 Vdc 62 – 80 Vdc 10.0 4.5 3.0 3 5A, 125V

120 Vac 102 – 132 Vac 7.5 4.0 2.0 3 4A, 125V

125 Vdc 106 – 137 Vdc 8.0 2.5 1.8 3 2.5A, 125V

240 Vac 204 - 264 Vac 6.0 2.5 1.0 3 2.5A, 250V

 Charging time apply to normal voltage only; times may vary at maximum and minimum voltage.

Table 25.1

Remote Close Solenoid

Catalog Number Voltage Ratings Peak Inrush Current

(Amps)

SPRCS024 24 Vdc 13.2

SPRCS048 48 Vdc 6.6

SPRCS072 72 Vdc 5.0

SPRCS125 125 Vdc 3.5

SPRCS120 120 Vac 3.0

SPRCS240 240 Vac 2.0

Remote close solenoid

Wiring Diagrams For Remote Operation

For proper operation, the electrical circuit should be wired as

shown in the diagram. All customer-supplied contacts should

be rated for the currents identiﬁed for both the electric op-

Accessories

Ac or dc power wiring diagram, remote operation

Shunt Trip

The shunt trip accessory is an electronic module which pro-

vides remote control capability to open the circuit breaker.

Breaker opening time is 50 milliseconds. When activated, the

shunt trip module sends a signal to the trip unit to open the

breaker. This allows the trip unit to record, display, distin-

guish and communicate (in MicroVersaTripPM™ trip units)

that the opening event was initiated by the shunt trip device.

The shunt trip is continuously rated and requires no cut-off

switch. When energized, the shunt trip supplies +24 Vdc

power to the trip unit to power the display.

Shunt trip modules are available in a wide range of voltages

(from 24 to 250 Vdc, and 24 to 240 Vac). They meet UL re-

quirements for operation at 55% of rated ac or 75% of rated

dc voltage, making this device suitable for use with Class 1

ground-fault protective devices. Shunt trip modules are also

available for 480 Vac and 600 Vac control power. A 50 VA

control power transformer, which mounts externally from

the breaker, is required and supplied with these accessories.

These transformers provide an output of 120 Vac, 50/60

Hz, to the supplied shunt trip ( with or without lockout). (See

outline drawing in the Physical Data section.)

Table 26.1

Shunt Trip Module

Catalog

Number

Voltage

Rating

(50-60 Hz)

Maximum

Operating

Voltage

(Volts)

Peak Inrush

Current

(AC Amps)

Nominal

Input

Current

(AC RMS mA)

SPST012 12 Vdc 13.2 3.0 200

SPST024 24 Vac/dc 26 1.5 140

SPST048 48 Vac/dc 53 1.5 110

SPST120 120Vac/125 Vdc 132 1.5 85

SPST208 208 Vac 228 1.5 50

SPST240 240Vac/250 Vdc 264 1.5 40

SPST 480 480 Vac 528 3.0 65

SPST 600 600 Vac 660 3.0 65

Shunt trip module

erator and the remote close solenoid. If momentary contact

switches are used, the minimum duration of contact closure

must be 83 milliseconds.

Accessories

Shunt Trip With Lockout

The shunt trip with lockout is similar to the regular shunt trip.

When energized, the shunt trip with lockout module sends a

signal to the trip unit to open the breaker. In addition, when

continuously energized with the breaker open, a plunger in

the module acts upon the mechanism, blocking manual and

electric closing by preventing mechanism spring discharge.

To close the breaker, de-energize the module for 250 ms. Be-

cause the breaker movable contacts are restrained and can-

not momentarily touch the stationary contacts, the mecha-

nism remains “kiss-free”. This feature is especially important

in main-tie-main schemes or generator circuits.

Table 27.1

Shunt Trip Module with Lockout

Catalog

Number

Voltage

Rating

(50-60 Hz)

Maximum

Operating

Voltage

(Volts)

Peak Inrush

Current

(AC Amps)

Nominal Input

Current

(AC RMS mA)

SPSTL012 12 Vdc 14 19 300

SPSTL024 24 Vac/dc 26 15 300

SPSTL048 48Vac/dc 53 7.5 200

SPSTL120 120Vac/125

Vdc

132 3 80

SPSTL208 208Vac 228 1.9 60

SPSTL240 240 Vac/250

Vdc

264 1.5 45

SPSTL480 480 Vac 528 3 65

SPSTL600 600Vac 660 3 65

Bell Alarm (Alarm Only)

The bell alarm module is used to signal breaker “tripped” sta-

tus to other accessories (e.g. external alarm devices, indicat-

ing lights, relays, or logic circuits) for remote indication and

interlocking functions. The switch is conﬁgurable by means

of rear-mounted DIP switches on the MicroVersaTrip Plus™

and PM™ trip units. The bell alarm can be made to oper-

ate in response to an overcurrent (including ground fault) or

protective relay trip and/or a shunt trip operation, and/or

operation of the undervoltage release module. It is not actu-

ated as a result of normal breaker “ON/OFF’ operation. For

the Power+™ trip unit, the bell alarm operates only when an

overcurrent (including ground fault) trip occurs.

This module provides a visual, mechanical pop-out target

which protrudes through the face of the circuit breaker door

when it operates. The bell alarm may be reset manually by

depressing the mechanical target, or automatically by clos-

ing the breaker.

The bell alarm is provided with one SPDT switch with control

power duty contacts as shown in Table 27.2.

Bell alarm

Table 27.2

Bell Alarm Module

Catalog Number AC Ratings DC Ratings

SPBAA240 6 A @ 240 Vac 0.5 A @ 125 Vdc

0.25 A @ 250 Vdc

SPBAA6006A @ 600 Vac 0.5 A @ 125 Vdc

0.25 A @ 250 Vdc

 600 Vac module not UL listed

Bell Alarm With Lockout

The bell alarm with lockout module combines both the bell

alarm and a manual lockout function. The bell alarm switch

operates identically to the standard bell alarm module,

except that the mechanical pop-out target must be manually

reset before the breaker can be closed.

Operation of the bell alarm with lockout module can be in-

dependently set by means of setting the DIP switches at the

rear of the MicroVersaTrip Plus™ and PM™ trip units. For the

Power+™ trip unit, the bell alarm with lockout module oper-

ates only when an overcurrent (including ground fault) trip

occurs. Current ratings of the single SPDT switch are identical

to the bell alarm module.

Table 28.1

Bell Alarm with Lockout Module

Catalog Number AC Ratings DC Ratings

SPBAL240 6 A @ 240 Vac 0.5 A @ 125 Vdc

0.25 A@ 250 Vdc

SPBAL6006 A @ 600 Vac 0.5 A @ 125 Vdc

0.25 A @ 250 Vdc

 600 Vac module not UL listed

Undervoltage Release Module

The undervoltage release is an electronic module used to

open the circuit breaker when the monitored voltage drops

below 35-60% of its rated value. The undervoltage release

“resets” when the monitored voltage is re-established allow-

ing the circuit breaker to reclose (the sealing voltage of the

UVR is 60-85% of its rated voltage).

Undervoltage release module

An undervoltage release trip operation is produced by the

Power+, MicroVersaTrip Plus or MicroVersaTrip PM trip unit in

response to a signal from the undervoltage release module.

This allows the trip unit to record, display, distinguish and

communicate (in MicroVersaTrip PM trip units) that the break-

er opening event was due to undervoltage release. Opera-

tion of the undervoltage release module will prevent breaker

contact closure, i.e. “kiss-free” operation. When energized,

the undervoltage release supplies +24 Vdc power to the Mi-

croVersaTrip Plus and PM trip units to power the display.

The undervoltage release module is available in a wide range

of control and power system voltages ranging from 12 Vdc

to 600 Vac. Undervoltage release modules used with 480

Vac and 600 Vac control power are supplied with a 50 VA

control power transformer which mounts externally from the

breaker. These transformers provide an output of 120 Vac,

50/60 Hz, to the UVR modules. (See outline drawings in Physi-

cal Data Section.)

Table 28.2

Undervoltage Release Module

Catalog

Number

Voltage Ratings

Current

(50-60 Hz)

Peak Inrush

Current

(Amps)

Nominal

Input

(mA)

SPUV012DC 12 Vdc 16 200

SPUV024DC 24 Vdc 15 140

SPUV048DC 48 Vdc 7.5 70

SPUV125DC 125 Vdc 3 30

SPUV250DC 250 Vdc 1.5 15

SPUV024AC 24 Vac 15 370

SPUV048AC 48 Vac 7.5 210

SPUV120AC 120 Vac 3 80

SPUV208AC 208 Vac 1.9 60

SPUV240AC 240 Vac 1.5 45

SPUV480AC 480 Vac 2 50

SPUV600AC 600 Vac 2 60

Time Delay Module for UVR

The time delay module prevents nuisance tripping due to

momentary loss of voltage. Cat. No. SPUVTD has 0.1 to 1.0

seconds delay. The module has 120 Vac input and 125 Vdc

output and must be used with the 125 Vdc UVR (Cat. No.

SPUV125DC).

Accessories

Bell alarm with mechanical reset lockout

Accessories

Auxiliary Switch

An auxiliary switch signals the circuit breaker’s primary con-

tact position (i.e. OPEN or CLOSED) to other devices, such as

indicating lights, relays or logic circuits. This enables the user

to provide remote indication, interlocking or control opera-

tions as a function of breaker primary contact position. The

auxiliary switch operation is independent of the method by

which the breaker is opened or closed. The auxiliary switch

does not distinguish between a “tripped” or “open” condi-

tion. The auxiliary switch contacts follow the main breaker

contacts on opening and precede them on closing.

Auxiliary switch with pre-wired secondary terminals (Drawout

shown)

Auxiliary switch modules are available with 4, 8,or 12 NO/NC

(SPDT) switches for control power duty ac/dc ratings. When

ordered for ﬁeld installation, an auxiliary switch module

comes pre-wired to its own terminal board, which mounts

with one screw to the left side of the breaker. All secondary

terminals are dedicated, so there is no confusion in wiring to

a 4, 8, or 12-switch module. A separate accessory for draw-

out breakers come pre-wired to the secondary disconnect.

Table 29.1

Auxiliary Switch

Catalog NumberNumber of

Contacts

Ratings

SPAS240AB4

SPAS240AB4D

4 6A@240 Vac

and120 Vac

0.5A@ 125 Vdc

0.25 @ 250 Vdc

SPAS240AB8

SPAS240AB8D

8 6A@ 240 Vac

and 120 Vac

0.5A@ 125 Vdc

0.25 @ 250 Vdc

SPAS240AB12

SPAS240AB12D

12 6A@240 Vac

and 120 Vac

0.5A@ 125 Vdc

0.25 @ 250 Vdc

SPAS600AB4

SPAS600AB4D4 6A@600 Vac 0.5A@ 125 Vdc

0.25 @ 250 Vdc

SPAS600AB8

SPAS600AB8D8 6A@600 Vac 0.5A@ 125 Vdc

0.25 @ 250 Vdc

 “D” sufﬁx for drawout breaker accessory.

 600 Vac Modules not UL Listed

Limited Access “Pushbutton Cover”

This accessory limits access to “ON/OFF” control of a breaker

to authorized personnel. The pushbutton cover accessory

consists of transparent hinged covers that can be individu-

ally sealed to the limited access assembly. Both the “ON” and

“OFF” button covers can be pilot drilled to allow use of a 1/8”

rod to operate either one or both pushbuttons. The catalog

number of this accessory is: SPPBCOVER.

Limited access pushbutton cover assembly

Mechanical Operations Counter

The mechanical operations counter is mounted behind the

front cover of the breaker, and it is viewable through a rect-

angular knockout window opening in the breaker cover. It is

a ﬁve-digit non-resettable counter which is actuated each

time the breaker is opened by any means. Together with the

fault operations counters stored in MicroVersaTrip Plus™ and

MicroVersaTrip PM™ trip unit memory, a complete history

of breaker operations is available to the user. The catalog

number of this accessory is : SPCOUNTER.

Mechanical operations counter

Padlock Device (Standard)

Padlocking devices are standard on all Power Break® II Cir-

cuit breakers. When the breaker is in the open position, and

the padlock device is raised at least ¼”, the breaker cannot

be closed mechanically or electrically. The device accepts

up to three padlocks with 1/4” to 3/8” diameter shanks. The

padlock device meets the EUSERC requirement for

padlocking.

Integral padlock device

Key Interlock Provisions

The key interlock provision enables the user to mount a

one-to four-cylinder, narrow-faced, Kirk-type FN customer-

supplied lock on the face of the breaker. The key interlock

provision works in conjunction with the padlock device. The

key interlock extends a lever through the padlock device

when the key is turned to the key removal or bolt extended

position.

Key interlock installed on front of the breaker

Table 30.1

Key Interlock Provisions

Catalog

Number

Number of

Locks

Kirk Key lock

Cat. Number

Superior Cat.

Number

SPK4 1 KFN00001-S105827Y

SPK4 2 KFN00002-S105828Y

SPK4 3 KFN00003-S105829Y

SPK4 4 KFN00004-S105827-4Y

 Final digit may be 0, 1, 2, or 3 depending on number of key removal

positions.

Door Interlock

The door interlock provides interlocking of the circuit breaker

compartment’s hinged door so that the breaker must be in

the “OFF” position before the door can be opened. The door

interlock is defeatable with a small tool to allow authorized

access. The catalog number of the door interlock is: SPDIL.

Door interlock

Accessories

Neutral Current Sensors

When the ground-fault option is selected in a trip unit, and

a single phase 3-wire or a 3 phase four-wire power system

(e.g., 120/208 Vac or 277/480 Vac) is used, an external neu-

tral sensor must be inserted in the neutral lead of the power

system to complete the ground-fault protective circuit.

Neutral current sensor

Table 31.1

Neutral Current Sensors

Breaker Frame

(Amps)

Circuit Breaker

Sensor Rating

(Amps)

Neutral Sensor

Rating or Tap

Setting (Amps)

Catalog

Number

800 200

400

800

200

400/200

600/300

800/400

TSVG302

TSVG304A

TSVG306A

TSVG308A

1600

1000

1600

800/400

1000/500

1200/600

1600/1000

TSVG808A

TSVG810A

TSVG812A

TSVG816A

2000 2000 2000/1200 TSVG820A

3000

1000

2000

2500

3000

800/400

1000/500

1200/600

1600/1000

2000/1200

2500/1800

3000/2400

TSVG808A

TSVG810A

TSVG812A

TSVG816A

TSVG820A

TSVG825A

TSVG830A

4000 4000 4000/3000 TSVG940A

 Match neutral current sensor rating (or tap setting) to circuit breaker sensor rating.

 For use with multiple-source ground fault protection schemes. rating does not

match MicroVersaTrip® Trip Unit sensor.

Accessories

Additional Accessories – Stationary

Breakers General Purpose,

Wall Enclosures

General Purpose, NEMA 1 enclosures are available for Power

Break® II breakers with neutrals for 800-2000 amps. These

units are UL Listed for service entrance use for single phase

three-wire, or 3-phase four-wire power systems through 600

Vac. Enclosures are provided with breaker mounting studs

and lugs. Enclosures, breakers and neutrals are ordered and

shipped separately, unassembled. These units are suitable

for use in 65 kA (max.) rms symmetrical systems.

Table 31.2

Enclosures And Field Installed Neutrals

Catalog Number Frame Size Field Installed Neutral

Catalog Number

SPB08W 800 A TNT800

SPB16W 1600 A TNT1600

SPB20W 2000A TNT2000

Lug Adapter Kits

Pre-mount to bus structure allowing cabling or bussing to be

completed prior to breaker mounting. Accept either lugs or

crimp-type connector terminals. Catalog includes adapter

and hardware for either a three-pole line-side, or a three-

pole load-side connection. (Lugs not included)

Table 32.1

Lug Adapter Kits

Circuit Breaker

Frame Size (Amps)

Suitable For Use

With up to:

Catalog

Number

800 3 TPLUG108 Lugs or

3 Crimp Lugs Per Pole TPLUA08

1600 6 TPLUG108 Lugs or

6 Crimp Lugs Per Pole TPLUGA16

2000 6 TPLUG108 Lugs or

6 Crimp Lugs Per Pole SPLUGA20

 Anderson VCEL-075-12H1 or equivalent.

 T-Studs – SP20FCA – included with adapter.

T-Studs

T-Studs mount directly to the breaker, and can be rotated

for either vertical or horizontal busbar connection. Catalog

numbers cover one stud. Both copper and aluminum T-studs

are tin-plated.

800- amp, Cat. No. SP08FCA and 1600 – 2000-amp, Cat. No.

SP20FCA aluminum T- Studs

Table 32.2

T-Studs

Circuit

Breaker

Frame Size

(Amps)

Catalog Number

Max. Rating

(Amps)

For Front

Connected Breaker

For Back

Connected Breaker

800 800 SP08FCA

SP08FCC—

2000 1600-2000 SP20FCA

SP20FCC—

2500 2000

2500

SPS20FCA

SPS25FCCSPS20BCA

SPS25BCC

3000 3000 SPS30FCC 

4000 4000

4000

SPS40FCC

SPS40LFCC —

—

 Aluminum

 Six T-studs supplied at no charge when ordered with breaker.

 Copper

 Supplied with integral T-Stud.

 Extra long stud. Alternate with SPS40FCC for ease of installation.

Accessories

Mechanical Interlocks (“Walking Beam”)

For Stationary Breakers

Mechanical interlocks are mechanical devices used to

prevent two adjacent circuit breakers from both being in

the “ON” or closed position at the same time. The interlock

permits both breakers to be in the “OFF” position or open

position while allowing either or both to be charged.

Table 33.1

Mechanical Interlocks

Maximum Current Envelope

Size Rating (Amps)

Catalog Number

2000 SPWB20

3000 SPWB30

4000 SPWB40

Lug Kits

Lug kits accept copper and aluminum wire and are suitable

for direct mounting to the breaker, except in the case of

TSLUG kits, T-studs must also be used.

Table 33.2

Lug Kits

Circuit

Breaker

Frame Size

(Amps)

Max

Rating

(Amps)

Catalog

Number

Lugs

Per

Kit

Max.

Cables

Per

Pole

Wire

Range

(Footnote)

800

400 TPLUG106 1 1 

600 TPLUG206 1 2 

800 TPLUG308 1 3 

800 TPLUG1081 3 

1600 1600 TPLUG408 1 4 

TPLUG1081 6 

2000 2000 TPLUG1081 6 

3000

800 TSLUG08 9 3 

1200 TSLUG12 12 4 

1600 TSLUG16 15 5 

2000 TSLUG20 18 6 

2500 TSLUG25 21 7 

3000 TSLUG30 27 9 

4000 4000 TSLUG40 33 11 

 For use with adapter kit only.

 #2 AWG-600 kcmil Cu/Al.

300-750 kcmil Cu/Al.

 #3/0 AWG – 800 kcmil Cu/Al.

 500-800 Kcmil Cu/Al.

 3/0- 800 kcmil Cu/Al.

 For back connected 3000A: T-Stud integral with breaker.

Additional Accessories – Drawout

Breakers Substructures

Substructures are available for both standard and Hi-Break®

Power Break® II breakers. Holes are provided for bolting on

a shelf or supports. Holes are also provided in the primary

stabs for bolting to busbars or terminal lugs. A special speed

wrench-style racking tool is provided for racking a breaker in

and out of the substructure.

Table 33.3

Substructures

Circuit Breaker

Frame Size (Amps)

Standard Break

Catalog Number

Hi-Break

Catalog Number

800 SPSDOS08 SPHDOS08

1600 SPSDOS16 SPHDOS16

2000 SPSDOS20 SPHDOS20

2500 SPSDOS25 SPHDOS25

3000 SPSDOS30 SPHDOS30

4000 SPSDOS40 SPHDOS40

Accessories

Secondary Disconnects

Control wiring is connected through drawout secondary

disconnects in the “TEST” and “CONNECTED” positions only.

Up to 72 control circuits are possible through (36) position

plug-style secondary disconnect blocks factory mounted to

each side of drawout breakers. One substructure disconnect

(SPD0SD36S) must be ordered for each breaker. An additional

block is required for auxiliary switches.

Table 34.1

Secondary Disconnects

Catalog Number Location

SPDOSD36S Substructure

SPDOSD36B Breaker

 One must be ordered for each substructure when accessories or communications

are used. When auxiliary switches are used, along with any other electrical acces-

sory or communication, two disconnects must be ordered.

 Order for replacement only. Included with drawout breaker.

Shutters

Shutters prevent unintentional contact with potentially live

primary disconnect stabs when a breaker is racked out of an

energized switchboard compartment.

Table 34.2

Shutters

Frame Size Catalog Number

800-2000A SPDSS20

3000A SPDSS30

4000A SPDSS49

Racking Padlock

The catalog number TDOPC racking padlock provides a

means for the user to prevent racking tool engagement,

thereby preventing movement of the breaker between the

Disconnected, Test and Connected positions.

By-Pass Switch

Provides control circuit continuity or downstream signal-

ing when drawout is engaged. The switch can be used as

an interlocking means to ensure the remote close solenoids

cannot be energized until the drawout breaker primaries are

fully engaged. The switch assembly mounts on the station-

ary frame, and the actuator to the carriage. Switch contacts

are rated at 10A at 600Vac, 0.75A at 125Vdc and 0.25A at

250Vdc.

Table 34.3

By-Pass Switch

Catalog Number Number of Switch Elements

TDOBP2L 2 NO/2 NC

TDOBP4L 4 NO/4 NC

TDOBP6L 6 NO/6 NC

Racking Tool

The racking tool is a drive wrench with a square ½” socket

that engages the racking mechanism of the drawout

breaker. The catalog number is TDORT. Note that one racking

tool is supplied with each group of ﬁve drawout breakers at

no charge.

Mechanical Interlocks for Drawout Breakers

Mechanical interlocks for drawout breakers provide the

same function as those for stationary breakers, except they

are used with two drawout breakers, mounted on a common

compartment centerline, in either the same vertical section

or adjacent vertical sections.

Table 34.4

Mechanical Interlocks

Envelope Size Catalog Number

800-2000 SPDOWB20

2500-4000 SPDOWB40

Lifting Bar

The lifting bar (TBOLB) provides a means of safely lifting a

drawout circuit breaker. A chain hook should be attached to

the central hole in the lifting bar.

Position Switch

Provides positive indication when the drawout breaker or

switch primary contact ﬁngers have been fully disengaged

from the main bus connections. Switch contacts change

state only after the primary ﬁngers are fully disconnected

when the breaker is being moved from the CONNECTED posi-

tion through the TEST position and into the DISCONNECTED

position.

May be used as part of a safety interlocking system in addi-

tion to the visual indicator on the drawout substructure. The

Position Switch accessory does not indicate either the TEST

or CONNECTED position. The switch assembly mounts on the

stationary frame and the actuator mounts to the carriage.

Switch contacts are rated at 10A at 600Vac, 0.75A at 125Vdc,

and 0.25A at 250Vdc.

Number of Switch

Elements

Product Number List Price

S NO/2NC SDOPS2L $177.00

4 NO/4 NC SDOPS4L $256.00

6 NO/6NC SDOPS6L $336.00

This section contains the nomenclature system for Power Break® II circuit breakers, Power+™, MicroVersaTrip Plus™ and

MicroVersaTrip PM™ trip units and the interchangeable rating plugs.

Power Break® II Circuit Breaker Catalog Numbers

S S D 08 * 02 H

Catalog Numbers

Accessory Catalog Numbers

SP AS 240 AB4D R

Power Break II breaker type

Current interrupting capacity

S = Standard break

H = HiBreak® breaker

Construction

D = Drawout

F = Stationary, front connected

B = Back connected, 2500-3000A only

Frame rating

08 = 800A 25 = 2500A

16 = 1600A 30 = 3000A

20 = 2000A 40 = 4000A

Auxiliary function

H = High-range instantaneous current sonsors

Blank = Standard current sensors

Current sensor rating

02 = 200A 20 = 2000A

04 = 400A 25 = 2500A

08 = 800A 30 = 3000A

10 = 1000A 40 = 4000A

16 = 1600A

Trip unit type and rating

B = Enhanced MicroVersaTrip Plus and

MicroVersaTrip PM trip unit;

D = Power+ trip unit

B2/D2 = 2000A maximum

B3/D3 = 2500, 3000A

B4/D4 = 4000A

Extender

R = Field installable kit

Blank = Factory installed

Auxiliary switch extender

AB4 = Auxiliary switch, type AB with 4 elements

AB8 = Auxiliary switch, type AB with 8 elements

AB12 = Auxiliary switch, tdype AB with 12 elements

(Add sufﬁx “D” for Drawout construction

Voltage, unless otherwise stated

012 = 12 Vdc

024 = 24 Vdc

048 = 48 Vdc

120/125 = 120 Vac or 125 Vac

240/250 = 240 Vac and 250 Vac

250 = 250 Vdc

480 = 480 Vac

600 = 600 Vac

08 = 800A 25 = 2500A

16 = 1600A 30 = 3000A

20 = 2000A 40 = 4000A

BCA = Back connected aluminum

BCC = Back connected copper

FCA = Front connected aluminum terminal T-stud

LFCC = Front connected copper, long stud

36B = 36 secondary disconnects, breaker

36C = 36 secondary desconnects, substructure

High-range instantaneous sensors only available on

MicroVersaTrip Plus and MicroVersaTrip PM units. For

availability of Power+ Tip Untis, contact your ED&C sales

engineer.

Power Break II breaker

Device type

AS = Auxiliary switch*

BAA = Bell alarm, alarm only*

BAL = Bell alarm with lockout*

COUNTER = Mechanical counter*

DIL = Defeatable door interlock

DOSD = Drawout secondary disconnects

DOWB = Drawout mechanical interlock

DSS = Substructure shutter kit*

E = Electric operator*

HDOS = Hi-Break rated drawout sustructure*

K4 = Kirk Key lock (4 maximum)*

PBCOVER = Pushbutton cover*

RCS = Remote close solenoid*

SDOS = Standard rated drawout substructure*

ST = Shunt trip*

STL = Shunt trip with lockout

UV = Undervoltage release*

WB = Walking beam for stationary breakers

08 = 800A T-stud

20 = 1600 thru 2000A T-stud

S20 = 2000A T-stud (3000A frame)

S25 = 2500A T-stud

S30 = 3000A T-stud

S40 = 4000A T-stud

RAILS = Rail kit

LUGA = Lug adapter kit

B = Enclosure

* Device Cat. No. requires an extender “R” for ﬁeld installable kit version only.

Target Module Catalog Numbers

TARGET00= Blank insert for Target Module

TARGET01= Target Module without ground fault target

TARGET02= Target Module with ground fault target

Power+™ Trip Unit Catalog Numbers

D2 20 LSI T1 R

Catalog Numbers

Rating Plug Catalog Numbers

TR 10 C 800 GF

Trip unit type and rating

TR = Trip unit rating plug

All Power+, MicroVersaTrip Plus™

and MicroVersaTrip PM™ rating plugs

Current sensor rating

2 = 200A

4 = 400A

8 = 800A

10 = 1000A

16 = 1600A

20 = 2000A

25 = 2500A

30 = 3000A

40 = 4000A

Trip unit type

C = Power+ trip unit rating plugs

Ground Fault Function

Blank = No ground fault

GF = Ground fault

Rating plug ampere rating

100 = 100A 800 = 800A

150 = 150A 1000 = 1000A

200 = 200A 1100 = 1100A

225 = 225A 1200 = 1200A

250 = 250A 1500 = 1500A

300 = 300A 1600 = 1600A

400 = 400A 2000 = 2000A

450 = 450A 2500 = 2500A

500 = 500A 3000 = 3000A

600 = 600A 3600 = 3600A

700 = 700A 4000 = 4000A

Trip unit type and rating

D2 = Power Break® II Power+ Trip Unit:

2000 A sensor maximum

D3 = Power Break II Power+ Trip Unti:

3000 A sensor maximum

D4 = Power Break II Power+ Trip Unit:

4000 A sensor maximum

Sensor rating

02 = 200A

04 = 400A

08 = 800A

10 = 1000A

16 = 1600A

20 = 2000A

25 = 2500A

30 = 3000A

40 = 4000A

Replacement or new

R= Replacement trip unit

(Blank) = New

Trip unit options

T1 = Target Module without

ground fault target

T2 = Target Module with

ground fault target

Blank = No Target Module

Auxiliary functions

LI = Long time and instantaneous

LSI = Long-time, short-time, instantaneous

MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Unit Catalog Numbers

B2 20 LSI GZI PM R

Catalog Numbers

Rating Plug Catalog Numbers

TR 10 B 800

Trip unit type and rating

B2 = Power Break® II Enhanced MicroVersaTrip

Plus or PM Trip Unit: 2000A sensor maximum

B3 = Power Break II Enhanced MicroVersaTrip

Plus or PM Trip Unit: 3000A sensor maximum

B4 = Power Break II Enhanced MicroVersa Trip

Plus or PM Trip Unit: 4000A sensor maximum

Sensor rating

02 = 200A

04 = 400A

08 = 800A

10 = 1000A

16 = 1600A

20 = 2000A

25 = 2500A

30 = 3000A

40 = 4000A

Auxiliary functions

LI = Long time and instantaneous

LSI = Long-time, Short-time, instantaneous

LSH = Long-time, Short-time, high range instantane

Replacement or new

R = Replacement trip unit

(Blank) = New

Trip unit options

Options for MicroVersaTrip PM trip units only.

Must select one:

P = Protective relays and communications

M = Metering and communications

PM = Protective relays, metering,

and communications

(Blank) = MicroVersaTrip Plus trip unit

Ground fault funcitions

G = Ground fault

GD = Ground fault defeatable (not UL listed)

GZ1 = Ground fault; ground fault only zone

selective interlock

GZ2 = ground fault and short-time selective interlock

GDZ2 = Ground fault defeatable (not UL listed):

gound fault and short-time selective interlock

(Blank) = None

Device Type

TR = Trip unit rating plug

All MicroversaTrip Plus

and MicroVersaTrip PM rating plus

Current sensor rating

02 = 200A

04 = 400A

08 = 800A

10 = 1000A

16 = 1600A

20 = 2000A

25 = 2500A

30 = 3000A

40 = 4000A

Rating plug ampere rating

100 = 100A 1000 = 1000A

150 = 150A 1200 = 1200A

200 = 200A 1500 = 1500A

225 = 225A 1600 = 1600A

300 = 300A 2000 = 2000A

400 = 400A 2500 = 2500A

500 = 500A 3000 = 3000A

600 = 600A 3600 = 3600A

700 = 700A 4000 = 4000A

800 = 800A

Trip unit type

B = All Enhanced MicroVersaTrip

Plus & MicroVersaTrip PM

trip unit rating plugs

Standards And Testing

Power Break® II circuit breakers are UL Listed in accordance

with Standard UL 489. This standard requires the breaker to

meet or exceed endurance and interrupting criteria. Power

Break II breakers are designed and tested to exceed these

requirements.

UL 489 requirements for endurance capability without cur-

rent (mechanical endurance) vary with frame ratings. For

example, for an 800-amp frame, the UL requirement is 3000

operations; and for a 4000-amp frame, only 1100 opera-

tions. All Power Break II breakers are designed to exceed this

requirement by meeting a minimum of 10,000 mechanical

operations.

UL Test Procedures

Extracted from UL Standard 489, current edition.

The following information brieﬂy describes the types of tests

Power Break II insulated case circuit breakers, rated 800

through 4000 amperes, must successfully pass.

1. Calibration: Tested at 200%, and 135% at 25° C. At

200%, an 800A breaker must trip in 2 to 30 minutes de-

pending on the current rating. At 135%, all sizes (larger

than 50 amperes) must trip within 2 hours.

2. Overload: 50 operations making and breaking six times

rated current at rated minimum voltage, 0.45-0.50

power factor for 800 and 1600A frame sizes; 2000 and

2500A frames, 25 operations at six time rated current;

and, 3000 and 4000A frames, 3 operations at six times

rated current plus 25 operations at two times rated cur-

rent. Tests are conducted at one operation per minute,

(make and break), but may be done in groups of ﬁve

operations with 15-minute delay between groups.

Overload test is conducted in a metal enclosure rep-

resenting the minimum size enclosure for which the

breaker is suitable. No electrical or mechanical break-

down is permitted and a 30-ampere fuse, connected

from the metal enclosure to the line lead least likely to

arc to the enclosure, must not rupture.

3. Repeat 200% calibration test.

4. Temperature Test: The circuit breaker after overload

is outﬁtted with 4 ft. minimum of rated copper cable

per pole, line and load end, and rated current is passed

through the breaker which is not in an enclosure. After

temperatures have stabilized, the temperature rise on

the cables at the connection to the breaker wiring ter-

minals must not exceed 50˚C rise, (75˚C total in a 25˚C

room ambient), and the breaker must not trip. Cables are

sized as shown in Table 43.1. When the copper bus bars

are used instead of cable for 1600-4000A breakers, they

are sized per Table 43.2.

5. Endurance: The breaker must complete an endurance

test (1) making and breaking rated current at rated volt-

age, .75-.80 lagging power factor and (2) additional no

load (mechanical) on-off operations per Table 38.1. The

ground-fault fuse described in item 2 above must not

rupture.

The rate of operation is one per minute except the 3000

and 4000A electrical test may be in groups of ﬁve with a

delay in between after conducting the ﬁrst 10 operations

at one per minute.

Table 38.1

Number of Endurance Test Cycles

Frame

Size (Amps)

Number of Cycles of Operation

With Current Without Current Total

800 500 3000 3500

1600 500 2000 2500

2000 500 2000 2500

2500 500 2000 2500

3000 400 1100 1500

4000 400 1100 1500

6. Repeat 200% calibration test.

7. Interrupting ability (short-circuit) for devices rated 600

Vac (all Power Break II breakers): Each pole of the 3-pole

unit must complete an “opening” operation (O) and a

“close-open” operation (CO) of short-circuit current

(single-phase) in Table 38.2 at rated voltage. An “O” and

“CO” operation using all three poles (“common” 3-phase

tests) is also required on the same device used for previ-

ous the tests in items 1-6.

Short-circuit test are acceptable if:

a) there is no electrical or mechanical breakdown;

b) the ground fuse has not opened;

c) the conductor insulation is not damaged;

d) there is continuity in the closed position at rated

voltage; and,

e) a cotton pad covering any vent openings in the

enclosure has not ignited.

Short-circuit test are conducted with rated cable sizes (or bus

for 1600A and larger breakers) using a maximum of four feet

on the line side and a maximum of 10 inches on load side for

3-pole tests and four feet on load side for single-pole tests.

Table 38.2

Short-Circuit Levels

Frame Size

(Amps)

Power

Factor, Lagging

3-Pole Circuit Breaker –Available

Short-circuit Current Sym. Amp

1-Pole, 1-Phase 3-Pole, 3-Phase

800 .45-.50 8660 10000

1600 .25-.30 14000 20000

2000 .15-.20 1400025000

2500 .15-.20 2000030000

3000 .15-.20 25000 35000

4000 .15-.20 30000 45000

 Circuit power factor may be .25-.30.

Application

8. Repeat 200% calibration test.

9. Dielectric voltage withstand: The tested breaker must

withstand applied voltage of twice rated plus 1000 volts

(2200 volts for 600V rated breaker) for one minute be-

tween:

a) line and load terminals,

b) poles of opposite polarity, and

c) live parts and the metal enclosure.

Performance – High Available Fault Current

(Hi-Break® Power Break® II) Circuit Breakers – The UL

Standard 489 speciﬁes additional, optional requirements for

evaluation of breakers on faults higher than the “standard”

values shown in item 5.

Test sequence is as follows:

1. Calibration: 200% of rated current.

2. Interrupting capacity: Short-circuit test are conducted

to evaluate (1) maximum IC rating, (2) IC at maximum

voltage, and (3) IC at maximum kVA. If one or more tests

are covered by another, for example, if maximum kVA

occurs at maximum voltage test, they may be omitted.

An “O” operation and a “CO” operation is required for

each evaluation. Acceptable high available fault current

ratings are, in RMS symmetrical kilo amperes: 7.5, 10, 14,

18, 22, 25, 30, 35, 42, 50, 65, 85, 100, 125,150, 200.

3. Trip-Out: Conducted at 250% of rated current. Breakers

must trip within same time limits as for 200% calibration.

4. Dielectric voltage withstand: Conducted at twice rated

(test) voltage.

The preceding is an abbreviated description. Refer to the

section Standards and References for speciﬁc standards.

GE Testing

GE has developed a qualiﬁcation test plan for the Power+™,

MicroVersaTrip Plus™ and MicroVersaTrip PM™ trip units that

is in addition to the tests required by Standard UL 489. The

objective is to demonstrate performance and reliability under

severe operating conditions. Essential components of the

internal qualiﬁcation test are:

GE Trip Unit Testing

1. Temperature Cycling. This test veriﬁes that units are

not damaged when exposed to many extreme thermal

cycles. The test consists of ramping units from -20°C to

70°C a minimum of 10 times each. Units are soaked at

each extreme temperature for 1 hour minimum for each

cycle.

2. Storage Temperature. This test ensures that units will

operate properly following exposure to extreme storage

temperature for 72 hours. Units are stored in an un-

powered state at -55°C and +85° for 72 hours and then

subjected to functional testing to verify proper operation.

3. Voltage Surge. This test ensures that the circuit breaker

is not susceptible to direct and coupled surge voltages

on any primary line or any control input or output line.

The test is performed per the ANSI C37.90.1 Surge With-

stand Capability speciﬁcation on all input and output

lines connected to the breaker. Both fast transient and

oscillatory surges are applied.

4. RF and EMI. These tests ensure that the breaker is not

susceptible to radiated electromagnetic ﬁelds. The test is

performed per the ANSI C37.90.2 Radiated Field Immuni-

ty speciﬁcation. The breaker is subjected to a modulated

ﬁeld of 30-50V/m from 20 MHz to1GHz with the ﬁeld

polarization applied vertically and horizontally.

5. Walkie-Talkie Immunity. The breaker is subjected to

standard types of industrial walkie-talkies to ensure that

it is immune to nuisance trips or improper operation

when nearby walkie-talkies are used.

6. Wiggins Immunity. Test are performed to ensure the

breaker will not nuisance trip when exposed to a high in-

ductive load (Wiggy) voltage tester across the energized

phase lines.

7. Humidity. A number of units are exposed to high-humid-

ity environments of 95% relative humidity for a period of

one week to simulate severe environmental conditions.

8. Heat/Humidity Endurance. LCD display modules are

exposed to +80°C, 85% relative humidity for a minimum

of 1000 hours to ensure that the LCD seal and polar-

izers can withstand severe environments for prolonged

periods of time.

9. POWER LEADER™ Systems Tests. Tests are performed

to prove that the trip units can be integrated into existing

POWER LEADER networks. A large number of trip units

are conﬁgured into a large network of various POWER

LEADER devices to ensure that they can communicate

when subjected to large network conditions. Many types

of systems tests are performed including: communica-

tion over long distances, multiple simultaneous event

testing, communication protocol testing, integration

testing with other devices, and bus fault and bus loading

testing.

10. Dust. Units are subjected to severe atmospheric dust

environments per MIL-STD-810E, Method 510.3, Proc. I.

11. Salt Spray. Units are subjected to severe salt spray and

salt fog environments per ASTM B117.

12. Electro-Static Discharge. Units are subjected to Electro-

Static Discharge test of up to 8.0kV per IEC 801-2.

GE Breaker Testing

UL Vibration Testing:

GE Power Break II circuit breakers have been investigated in

accordance with UL 489 Supplement SB and vibration tested

in accordance with Supplement SB, Section SB2. This quali-

ﬁes them as UL listed Naval circuit breakers intended for use

aboard non-combatant and auxiliary naval ships over

19.8 meters (65 feet) in length. Circuit breakers complying

with these requirements shall be marked “Naval”.

Frequency (Hz)

G force

1.400

1.200

1.000

0.800

0.600

0.400

0.200

0.000 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33

Frequency (Hz)

Acceleration density

(G2/cps)

0.06

0.05

0.04

0.03

0.02

0.01

1 2 3 10 50 100 600 1000

Test breakers were subjected to a resonance frequency

search from 4 to 33 Hz, 2 hr. dwell at resonance, and a 2½

hr. variable frequency test in each of three rectilinear axes.

Tests were performed with the circuit breaker “closed” and

also “open.” Vibration input during testing is described by the

graph below. Resonance G-forces during testing exceeded

3Gs. Circuit breaker contacts were monitored during testing

to verify that contacts did not open when the circuit breaker

was “closed” and did not close when the circuit breaker was

“open”.

UL489 SB vibration

4G Vibration: In addition, 800-2000A Stationary mounted

Power Break® II circuit breakers have been tested to with-

stand 4G vibration.

Sine Sweep Vibration: Sinusoidal log sweep vibration in each

of 3 rectilinear axes with peak acceleration of 4 G from 10 Hz

to 500 Hz, followed by 30 minute resonance dwell at the 3

most severe frequencies in each axis.

Random Vibration: Random vibration from 2 Hz to 600 Hz

was run to the acceleration density shown below.

Random vibration test spectrum

IEC Test Qualiﬁcation

Power Break II circuit breakers are tested to conform with

IEC Standard 947-2 for general purpose use with no spe-

ciﬁc enclosure. Power Break II circuit breakers are designed

for intentional time delay under short-circuit conditions as

described by IEC 947-2 use category B. In addition, Power

Break II circuit breakers are suitable for use in phase-earthed

systems and are tested in individual pole short circuits. All

Power Break II testing is performed in open air. During short-

circuit and endurance under load testing the circuit breakers

are surrounded by a perforated metal screen. The screen is

positioned over the top of the breaker and located 4.5 inches

above the arc chamber vents. The screen also covers a sur-

face located one inch away from the bottom and sides.

The metallic screen is made of 16-gauge steel with 3/16”

diameter holes punched on a ¼” stagger creating a 50%

metal-to-air ratio. During these tests, a 50 amp OPTS fuse is

used to connect the screen to the test supply neutral. Power

Break II circuit breakers are short-circuit tested in both the

line top and line bottom conﬁguration making them suitable

for “reverse feed” applications. The conformance to IEC 947-

2 consists of the following test sequences all of which have

been third-party witnessed by UL:

I. General Performance Characteristics

1. Tripping Limits and Characteristics:

Power Break II circuit breaker tripping characteristics are

veriﬁed under short-circuit and overload conditions to

meet the relevant trip time curves. Various trip and no-

trip conditions are veriﬁed.

2. Dielectric Properties:

Power Break II circuit breakers are dielectric tested

through the main circuit and the control circuits to with-

stand 2500 volts for 1 minute without breaking down.

3. Mechanical Operation and Operational

Performance Capability:

Power Break II circuit breakers are endurance tested

to 10,000 operations without maintenance. 500 opera-

tions are performed under full load at rated voltage and

the remainder are performed under no-load conditions

with a minimum of 10 operations per hour. At least 10%

of the no-load operations are opened by a shunt trip

or undervoltage device. During the endurance testing

the circuit breaker is monitored to ensure the allowable

thermal rise limits are not exceeded. In addition to circuit

breaker endurance, drawout breakers are racked in and

out of their substructure 100 times.

4. Veriﬁcation of Dielectric Withstand:

Following the endurance test, the circuit breaker’s main

circuit is veriﬁed to withstand a voltage equal to twice its

rated insulation voltage for 1 minute.

5. Veriﬁcation of Temperature Rise:

Following the dielectric veriﬁcation, a temperature-rise

test is made at the rated current at any convenient

voltage. The breaker is connected in open air to a power

supply through copper bus. Each main terminal is fed

by 3 each 3” x 0.25” x 3 meter long copper bus sections

hung vertically, painted ﬂat black and spaced 0.25”

apart. The main terminals are veriﬁed to not rise more

than 80°C above ambient. The operating handle and

push-to-close button are veriﬁed to rise no more than 35

and 50°C respectively. Other areas are also veriﬁed.

Application

II. Rated Service Short-Circuit Breaking Capacity (Ics)

1. Rated Service Short-Circuit Breaking Capacity:

Power Break® II circuit breakers are tested to complete

a series of short-circuit interruptions with a 3-minute

rest period between interruptions. The breakers must

complete an “open” operations followed by a “close-

open” operation and another “close-open” operation.

The circuit breakers are tested with an open circuit

voltage sufﬁcient to enable a recovery voltage of the

rated voltage plus 5%. The 800-2000 amp Power Break II

circuit breakers are tested in a 56,000 amps rms sym-

metrical, 50 Hz, 20% power factor short circuit. (See

Table 46.1)

2. Veriﬁcation of Dielectric Withstand:

Following the short-circuit interruptions, the breaker’s

main circuit is veriﬁed to withstand a voltage equal to

twice its rated insulation voltage for 1 minute.

3. Veriﬁcation of Temperature Rise:

Following the dielectric veriﬁcation, a temperature-rise

test is made at the rated current and the main terminals

are monitored as previously described in Sequence I test

4. Veriﬁcation of Overload Release:

Following the temperature-rise veriﬁcation, the circuit

breaker overload protection is veriﬁed by applying 145%

of rated current through all three poles connected in

series. The breaker must trip within trip time curve.

III. Rated Ultimate Short-Circuit Breaking Capacity

(Icu)

1. Veriﬁcation of Overload Release:

Prior to short-circuit testing, the circuit breaker overload

protection is veriﬁed by applying 200% of rated current

through each pole individually. The breaker must trip

within the trip time curve.

2. Rated Ultimate Short-Circuit Breaking Capacity:

Power Break II circuit breakers are tested to complete a

series of short-circuit interruptions with a 3 minute rest

period between interruptions. The breakers must com-

plete an “open” operation followed by a “close-open”

operation. The circuit breakers are tested with an open

circuit voltage sufﬁcient to enable a recovery voltage of

the rated voltage plus 5%. The 800 – 2000 amp Power

Break II circuit breakers are tested in a 75,000 amp rms

symmetrical 50 Hz, 20% power factor short circuit.

3. Veriﬁcation of Dielectric Withstand:

Following the short-circuit interruptions, the breaker’s

main circuit is veriﬁed to withstand a voltage equal to

twice its rated insulation voltage; however, not less than

1000V for 1 minute.

4. Veriﬁcation of Overload Release:

Following the dielectric veriﬁcation, the circuit breaker

overload protection is veriﬁed by applying 250% of rated

current through each pole individually. The breaker must

trip within the trip time curve.

IV. Rated Short-Time Withstand Current (Icw)

1. Veriﬁcation of Overload Release:

Prior to short-circuit testing, the circuit breaker overload

protection is veriﬁed by applying 200% of rated current

through each pole individually. The breaker must trip

within the trip time curve.

2. Rated Short-Time Withstand Current:

Power Break II Circuit breakers are tested to carry a

short-time withstand current with the overcurrent and

instantaneous over-ride protection defeated. For the

800-2000 amp Power Break II circuit breakers, a short

circuit is calibrated to deliver the equivalent I²T of a

40,000 amp rms symmetrical short circuit for 1 second

or 1,600,000,000 I²T. Also, the test circuit is calibrated to

reach a peak current of at least 84,000 amps during its

ﬁrst half cycle. Since momentary contact separation can

occur during this test, the test is made at rated voltage.

The test is performed at a frequency of 50 Hz with a plus

or minus 25% tolerance and a 25% power factor.

3. Veriﬁcation of Temperature Rise:

Following the short-time withstand, a temperature-rise

test is made at the rated current and the main terminals

are monitored as previously described in Sequence I test

4. Short-Circuit Breaking Capacity at the Maximum

Short-Time Withstand Current:

Following the temperature veriﬁcation the breakers are

tested to complete a series of short-circuit interruptions

with a 3-minute rest period between interruptions. The

breakers must complete an “open” operation followed by

a “close-open” operation. The circuit breakers are tested

with an open circuit voltage sufﬁcient to enable a recov-

ery voltage of the rated voltage plus 5%. The 800-2000

amp Power Break II circuit breaker is tested in a 40,000

amp rms symmetrical, 50 Hz, 25 % short circuit.

5. Veriﬁcation of Dielectric Withstand:

Following the short-circuit interruptions, the breaker’s

main circuit is veriﬁed to withstand a voltage equal to

twice its rated insulation voltage for 1 minute.

6. Veriﬁcation of Overload Release:

Following the dielectric veriﬁcation, the circuit breaker

overload protection is veriﬁed by applying 250% of rated

current through each pole individually. The breaker must

trip within the trip time curve.

Application

V. Individual Pole Short-Circuit Test Sequence (Isu)

1. Individual Pole Short-Circuit Breaking Capacity:

Power Break® II Circuit breakers are tested to complete a

series of short-circuit interruptions with a 3-minute rest

period between interruptions. The breakers must com-

plete an “open” operation followed by a “close-open”

operation on each pole individually. The circuit breakers

are tested with an open circuit voltage sufﬁcient to en-

able a recovery voltage of the rated voltage plus 5%. The

800-2000 amp Power Break II circuit breakers are tested

using two phases of a three-phase 25,000 amp rms

symmetrical, 50 Hz, 25% power factor short circuit.

2. Veriﬁcation of Dielectric Withstand:

Following the short-circuit interruptions, the breakers

main circuit is veriﬁed to withstand a voltage equal to

twice its rated insulation voltage; however, not less than

1000 V for 1 minute.

3. Veriﬁcation of Overload Release:

Following the dielectric veriﬁcation, the circuit breaker

overload protection is veriﬁed by applying 250% of rated

current through each pole individually. The breaker must

trip within the trip time curve.

Table 42.1

Test Tolerance: Unless Otherwise Speciﬁed

All Tests No Load, Normal

Load or Over Load

Short Circuit

Current +5%-0% — 3500

Voltage +5%-0% — 2500

Frequency — ±5%(47.5-52.5 Hz) ±5%(47.5-52.5 Hz)

Power Factor — ±0.05 +0 -0.05

Power Break® II –

100 % Rated Circuit Breakers

Power Breaker II circuit breakers are UL Listed to carry 100%

of rating-plug nameplate current, continuously, when

installed in accordance with guideline printed on the breaker,

and as detailed in the following Current Rating Factors por-

tion of this section.

Standard Rated Devices

A “Standard rated” device is rated to carry 100% of its name-

plate current for short periods of time (up to 3 hours maxi-

mum) when enclosed in equipment, such as a switchboard.

The enclosed device has a continuous rating of 80% of rating

according to current versions of the National Electric Code

(Article 220-10).

100% Rated Devices

100% rated devices are designed to carry 100% of their

nameplate current rating when enclosed and tested in distri-

bution equipment.

 4000 A stationary 80 %

Breakers with 100% rating are so marked on the front of

the devices. This marking includes minimum enclosure size,

minimum ventilation (if any) , minimum cable sizes and tem-

perature ratings to be used. Current versions of the National

Electric Code permit such use in the exceptions to Articles

210-22(c) and 220-10 (b).

Factors Affecting the Current Ratings

of Installed Devices

There are six application factors to consider in selecting cur-

rent rating on installed Power Break II insulated case circuit

breakers. These are: 1) the size of the cable or bus used in

the line and load connections, 2) the actual installed ambient

temperature, 3) the system operating frequency, 4) the alti-

tude of the installation, 5) the type of loading of the protected

circuit, and 6) the design safety factor.

The following simple relationship combines these six applica-

tion factors into a single equation:

ICB = IA x A x B x C x D x E x F

ICB = Installed circuit breaker current rating, amps

IA = Actual load current, amps

A = Cable of bus sizing factor

B = Ambient temperature rating factor

C = Frequency rating factor

D = Altitude rating factor

E = Load class rating factor

F = Safety factor

Cable or Bus Size

The thermal design of a circuit breaker takes into account

the ability of the line and load cables or buses to act as heat

sinks. Standard UL 489 has assigned speciﬁc cable or bus

sizes for each current rating. Generally, these assignments

are coordinated with speciﬁc conductor temperature ratings.

Increasing a conductor’s temperature rating decreases both

the cross-sectional area and its ability to conduct heat from

the circuit breaker. The chart below illustrates the effect of

changing cable areas on the current-carrying ability of the

circuit breaker.

Effects of changing load and line conductor sizes

Application

Table 43.1

Required Cable Size

Frame

Rating (Amps)

Sensor Rating or Rating Plug

Rating (Amps)

Cable Size and Quantity Cable Min Temp.

Rating Carrying 100%

Continuously (°C)

Copper Cables Aluminum Cables

Qty. Size (mcm) Qty. Size (mcm)

800

200

400

600

800

2 or 3

3/0

600

350

600 or 300

250

500

400

1600

800

1000

1200

1600

300

400

350

400

350

500

600

90

2000 2000 6 400 6 600 90

2500 2000

2500

400

500

600

90

3000 3000 8 or 9 400 or 500 9 or 10 500 or 600 90

4000 4000 10 or 11 500 or 600 12 or 13 500 or 600 90

 100% Continuous load requires use of 90°C cable sized to 75°C ampacity. Lugs must be marked CU9AL or AL9CU or AL9 denoting suitability with 90°C cable.

Table 43.2

Required Bus Size – Bare Or Tinned Copper

Frame Rating

(Amps)

Bus Bars Per Terminal

Number Size in (Inches)

1600 2 ¼ X 3

2000 2 ¼ X 4

2500 2

¼ X 5

¼ X 2 ½

3000 4 ¼ X 4

4000 4 ¼ X 5

Table 43.3

Properties Of Conductors

Size

AWG/

KCMIL

Area Cir.

Mills

Conc.

Lay Or

Stranded

No. Wires

Conc. Lay

or Stranded

Diameter/

Wire (in.)

Bare

Conductors

Diameter

Area

Square

Inches

Resistance*

Bare

Copper

Resistance*

Tinned

Copper

Resistance*

Aluminum

Equiv.

Cross Sect.

Area AWG/

KCMIL

ISO Metric

Cable Size

(mm)²

3/0 167,800 19 0.0940 0.470 0.173 0.0642 0.0668 0.105 85 95

250 250,000 37 0.0822 0.575 0.260 0.0431 0.0449 0.0708 127 120

300 300,000 37 0.0900 0.630 0.312 0.0308 0.0374 0.0590 152 150

350 350,000 37 0.0973 0.681 0.364 0.0320 0.0333 0.0505 177 185

400 400,000 37 0.1040 0.728 0.416 0.0270 0.0278 0.0442 202 —

500 500,000 37 0.1162 0.813 0.519 0.0216 0.0222 0.0354 253 240

600 600,000 61 0.0992 0.893 0.626 0.0180 0.0187 0.0295 304 300

750 750,000 61 0.1109 0.998 0.782 0.0144 0.0148 0.0236 380 —

* Note: DC resistance values are shown in ohms per 1000 feet at 25°C (77°F).

Application

Table 44.1

Factor “A” – Cable Or Bus Size Multiplying Factor

Percentage of Rated

(Required) Cross-Sectional Area

(%)

Factor A

50 1.40

60 1.25

70 1.15

80 1.07

90 1.02

100 1.00

125 0.99

150 0.97

200 0.97

Ambient Temperature

Ambient temperatures have an even wider effect on the

rating of the breaker-cable system. While the internal sens-

ing and tripping circuitry with the Power+™, MicroVersa-

Trip Plus™ and MicroVersaTrip PM™ trip units are ambient

insensitive, high-ambient temperatures may cause internal

components to exceed their operating temperature limits.

Low temperatures substantially increase the current-carry-

ing capabilities of the breaker-cable system until other limit-

ing factors occur (e.g., lubrication problems or mechanical

binding of internal parts due to differential contraction). The

ambient temperature of a Power Break® II breaker should not

be less than -20°C nor exceed +70°C.

Cable with insulation ratings above 75°C may be used,

providing it is sized to 75°C, per the NEC, or other applicable

codes.

The term “ambient” temperature always refers to the tem-

perature of the air immediately surrounding the breaker and

not the temperature of the air outside the breaker’s enclo-

sure. Room or outside air temperatures only establish the

thermal ﬂoor to which all other heating is added.

To convert breaker ambient from room ambient, it is nec-

essary to know the temperature rise within the equipment

housing the breaker. The temperature rise is a function of

several variables, including heating caused by other equip-

ment, ventilation, solar heating, factors relating to group

mounting and the free surface area of the breaker’s enclo-

sure.

Once the device’s ambient temperature is determined, select

Factor B from the table.

Table 44.2

Factor “B” – Ambient Temperature Rating Factor

Ambient Temperature

°C¹

Maximum Wire

Insulating Rating °C²

Factor B

25 75 1.00

40 90 1.00

50 105 1.00

60 125 1.10

70 125 1.15

Notes: 1) Average air temperature over a 24-hour period outside the break-

er’s insulated case, but inside the enclosure. 2) Cable (wire) must be based

on 75°C ampacities per Table 310-16, current National Electrical Code.

Operating Frequency

All Power Break II circuit breakers may be applied at their

published ratings on 50 Hz and 60 Hz power systems. At

nominal system frequencies less than 50 Hz but above direct

current, digital solid-state trip devices become inoperative

due to sensor saturation. On direct current systems, digital

solid-state trip units are completely inoperative. Power Break

II circuit breakers are, therefore, not suitable for direct cur-

rent applications.

System operating frequencies above 60 Hz may change the

performance and ratings of circuit breakers by heating me-

tallic parts and signiﬁcantly reducing interrupting capacity.

Factor “C” – Operating Frequency

For operating frequencies of both 50 Hz and 60 Hz, the

operating frequency rating factor “C” = 1.00. For operating

frequencies other than 50 Hz and 60 Hz, derating factors “C”

are listed below.

Table 44.3

Factor “C” - Frequency Rating

Frequency * Factor C

dc —

50-60 Hz 1.00

150-180Hz 1.07

200-240 Hz 1.25

300-350 Hz 1.40

400-450 Hz 1.51

* Power+ trip units and the energy management functions in MicroVersaTrip

PM trip units are suitable for 50/60 Hz applications only.

Application

Altitude

Power Break® II circuit breakers are designed for operation

at altitudes from sea level to 6000 ft. (1800 meters). Reduced

air densities at altitudes above 6000 ft. affects the ability of

the circuit breaker to both transfer heat and interrupt short

circuits.

Determine the altitude of the breaker’s installation, and se-

lect the altitude rating factor “D” from the following table.

Table 45.1

Factor “D” Altitude

Altitude (Feet) Altitude (Meters) Factor D

From 100 To 6,000 From 30 To 1,800 1.00

From 6,001 To 10,000 From 1,801 To 3,000 1.04

Above 10,001 Above 3,001 1.08

Load Class Rating Factor

The type of load and its duty cycle must be considered in the

application of Power Break II circuit breakers. Loads, such

as capacitors and electromagnets, require a substantial and

continuous derating factor if the breaker is normally used to

switch the load. With loads such as resistance welders, the

breaker’s continuous current rating must be no less than

125% of the welder’s 100% duty-cycle rating.

In general, insulated case circuit breakers are intended for

the protection of insulated cable. Where a circuit breaker is

intended to protect load equipment, prudent engineering

practices call for obtaining factory review and concurrence

with the selection of a speciﬁc protective device. Load class

selection factors “E” for typical application are listed in the

following table.

Table 45.2

Factor “E” – Load Class or Type

Load Type Factor E

Switching Electromagnets 1.50

Single Motor Branch Circuit Protec-

tion ( Normal Duty) 1.50

Switching Capacitors 1.50

Single Motor Branch Circuit Protec-

tion (Heavy Duty) 1.75

All other load Types (Normal Duty) 1.0

 Use this factor to either plugging duty or starting more than 25 times per hour,

where the rms current cannot be easily calculated.

Safety Factor

A safety factor is used to provide a design margin between

the rating of a circuit breaker and the derived operating

current using all of the selection factors described in the

equation on page 42. A safety factor of 10% is often used to

prevent nuisance tripping.

Factor “F” – Safety Factor

A safety factor of 10% is equivalent to a Factor F of 1.10.

Interrupting Ratings

In addition to current rating considerations, Power Break II

circuit breakers must be able to automatically trip, or open,

the protected circuits under overload conditions. The breaker

must have sufﬁcient interrupting capacity to interrupt the

maximum short-circuit that can ﬂow under worst-case

conditions.

The following paragraphs describe the interrupting rating of

Power Break II circuit breakers.

Basis of Interrupting Ratings

Short-circuit current interrupting ratings depend on know-

ing the magnitude of short-circuit current that may ﬂow

through the circuit breaker. Devices rated in accordance with

Standard UL 489 list their interrupting rating in terms of “rms

symmetrical amperes.”

Power factor or X/R ratio. Interrupting ratings are based on

a speciﬁc ratio of resistance – to reactance, or power factor

in the faulted circuit. Practical ac circuits contain some reac-

tance, so there is some displacement between current and

voltage wave-forms. Since a short circuit can occur at any

point of the voltage wave, the actual trace of short-circuit

current may display considerable initial displacement from

the zero current axis.

The magnitude of the momentary peak current to be inter-

rupted is a function of the maximum peak current displace-

ment from the zero current axis. That displacement is a

function of the X/R (ratio of reactance to resistance) or power

factor of the faulted circuit. The higher the X/R rating, the

lower the power factor and the greater the magnitude of

peak current displacement.

Symmetrical ac waveform

PF = x 100 And: Z = (R)2 + (X)2

Therefore PF = x 100

PF = Power factor, % Z = Impedance in ohms

R = Resistance in ohms X = Reactance in ohms

(R)2 + (X)2

Application

Generally, electrical power system engineers calculate the

X/R ratios of circuit rather than power factor. The procedures

for calculating short-circuit current and X/R ratios are de-

scribed in Publication GET-3550.

Asymmetrical ac waveform

The ﬁgures below show the initial fault current displacement

of a pure circuit (symmetrical) and a reactive circuit with a

high X/R ratio. The actual current displacement of a reac-

tive circuit depends on the exact moment the short circuit is

applies. There is a simple relationship between power factor

and X/R of a faulted circuit:

Interrupting Ratings – Standard And Hi-Break® Breakers

Power Break® II breakers are available in two classiﬁcations

of interrupting ratings: Standard and Hi-Break breakers. All

ratings are without the need for external fuses or current

limiters. Hi-Break breakers’ interrupting ratings are for those

circuits with unusually high levels of available fault current.

Table 46.1

Interrupting Rating Breaker Performance In RMS Symmetrical kA

UL 489

50/60 Hz

Frame Size

800A

1600 -

2000A

2500 –

3000 4000A

Standard

240V

480V

600V

100

Hi-Break®

240V

480V

600V

100

125

100

200

150

100

200

150

100

Short Time

(0.5 sec.) 25 40 42 42

IEC 947 -2 Ratings

415V, 50/60 Hz

Icu

Ics

Icw (1 sec)

75

45

50

 Requires 4000A construction

Table 46.2

Estimated 400 Hz Interrupting Ratings

RMS Symmetrical Amperes – Not UL Listed

Standard Break

Frame Size

(Amps)

Max. Rating Plug

Ampacity

120/240 277/480 346/600

800

1600

2000

2500

600

1000

1200

1600

6500

8500

10000

5000

6500

10000

4200

5000

8500

Hi-Break

Frame Size

(Amps)

Max. Rating Plug

Ampacity

120/140 277/480 346/600

800

1600

2000

2500

600

1000

1200

1600

10000

12500

20000

10000

15000

6500

10000

 No additional thermal derating is required for above–maximum rating

plug ratings for frame sizes noted. Note: 400Hz interrupting ratings are

based on engineering judgment, taking into consideration the operating

characteristics of insulated case circuit breakers and the worldwide lack

of test facilities to verify performance. Power+™ trip units and the energy

management functions in MicroVersaTrip PM™ trip units are suitable for

50/60 Hz applications only.

Application

Table 47.1

Interrupting Rating Multipliers-

For High X/R Rations (Low Power Factors)

When the X/R ratio of a faulted circuit is higher than 4.899 (power factor of

0.20) the breaker’s interrupting rating must be derated. The multiplying fac-

tor is shown in the table below.

Power Factor X/R Ratio Interrupting Capacity

Derating Factor

0.20 4.899 1.000

0.19 5.167 0.98

0.18 5.465 0.97

0.17 5.797 0.96

0.16 6.169 0.95

0.15 6.169 0.94

0.14 7.072 0.93

0.13 7.627 0.91

0.12 8.273 0.90

0.11 9.036 0.89

0.10 9.950 0.88

0.09 11.066 0.87

0.08 12.460 0.85

0.07 14.251 0.84

0.06 16.637 0.83

0.05 19.974 0.82

0.04 24.980 0.81

Example Data

A Power Break® II stationary feeder breaker consisting of

770A of continuous loads @ 480Vac required. Available

short-circuit current at the breaker is 63kA rms symmetrical

with a power factor of 0.13 (X/R ratio of 7.627). Average tem-

perature of the room air could be as high as 45° C (air sur-

rounding the enclosed breaker will be 15° C higher.) Altitude

above sea level at the installation site is 6500 feet. The loads

are considered critical.

Selection

Since the Power Break II breakers are labeled as suitable to

carry 100% of their ampere rating continuously,* there is no

need to multiply the continuous load by 1.25 as would be

required when using a non 100% rated breaker.

Per UL 489, Power Break II breakers are short-circuit tested

with a power factor of 20% (X/R ratio of 4.889); the actual

faulted circuit power factor in this example, however, is 13%

(X/R ratio of 7.627) and this requires derating of the breaker’s

interrupting rating per Table 47.1. Multiplying the standard

break IC rating of 65kA by .91 gives 59.1kA rating when the

power factor is 13% and not 20% minimum.

The available short-circuit current is 63kA and thus the stan-

dard break breaker is not adequate and could not be used.

The Hi-Break® units are rated 100kA and are acceptable.

Further derating must be done for high ambient conditions.

Per Table 44.2 Factor “B”, 60°C breaker ambient tempera-

ture requires a derating factor of 1.10. Similarly, the 6500-ft.

altitude requires a 1.04 derating factor- see Table 45.1 Factor

“D”.

This feeder is a critical circuit and therefore a Safety Factor F

of 1.10 will be applied.

Next multiply the load, IA, by the several factors AxBxCxDx-

ExF to determine the minimum frame ampere rating:

ICB=IA x A x B x C x D x E x F = 770A x 1.00 x 1.1 x 1.00 x 1.04 x

1.00 x 1.1 = 770 A x 1.258 or 969A.

Select a 1600A Hi-Break frame with either a 1000A or a

1600A sensor rating with an 800A rating plug because the

rating plug is not affected by any of the load characteris-

tics. An 800A rating plug, however, may not permit the 10%

safety factor for additional current-carrying capacity above

the actual 770A. An alternate choice would be to select a

1000A rating plug and set the current setting (long time pick

up) to 0.9 and cable or bus for 900A ampacity. If the alter-

nate choice is used, some local inspecting authorities may

require sealing of the sealable trip unit and accessory door to

prevent upward adjustment of the 0.90 current setting.

Finally, if insulated conductors are to be used, the high –am-

bient temperature (60°C) will require using 125°C minimum

insulation rating with the conductors sized per the 75°C

ampacity tables.

Conductors may be sized to the 800A rating plug value,

if used, or to 900A current setting value if a 1000A rating

plug is used. Additional derating of the conductors may be

required for (1) more than three conductors in a raceway

and (2) ambient temperatures other than 30°C. Refer to the

National Electrical Code, Article 310.

Breaker Selection

User may select a front connected stationary, Hi-Break

breaker, 1600-amp frame, standard instantaneous with

1000-amp current sensor. Rating plug is 1000 amps. An

enhanced MicroVersaTrip Plus ™ trip unit with LT, ST, and I.

• Breaker: Cat. No. SHF16B210

• Rating Plug: Cat. No. TR10B1000

• Trip Unit: Cat. No. B210LSI

*4000A Stationary 80% rated.

Application

Humidity and Fungus

All ferrous parts are zinc plated with either a yellow dichro-

mate or phosphate ﬁnish. Zinc plating resists 96-hour salt

spray test. Alloy steel components made of inherently corro-

sion-resistant materials are not plated.

Current-carrying parts are either silver or tin plated for

corrosion protection and to assure reliable electrical joints.

Molded cases and covers, and all internal insulators, are

made from inorganic materials that are inherently fungus

proof.

Wiring Diagram, Secondary Terminals

All Power Break® II breakers use the same dedicated second-

ary terminals regardless of frame, rating, accessory or trip

unit combinations. The left side set of secondary terminals

are assigned to auxiliary switches. The right side set is as-

signed to all other accessories and breaker functions.

Terminals are suitable for (2) #18 -#12 solid or stranded

copper wire. Tightening torque is 9 lb-ins.

Left side secondary Right side secondary

terminals “A” Block terminals “B” Block

Time Current Tripping Characteristics

Power Break II insulated case circuit breaker time current

curves are the engineering documents that deﬁne the tech-

nical performance of the devices. Information provided on a

time current curve includes the following:

• Product family type (s)

• Speciﬁc device type (s)

• Ampere ratings covered on curve

• Overcurrent characteristics covered – long-time, short-

time, instantaneous, etc.

• Maximum total clearing time

• Maximum and minimum temperature limits

• Frequency ratings

• Voltage ratings

• Speciﬁc trip unit ratings

• Trip unit adjustment ranges

• Tolerance (band width)

Multiples of circuit breaker trip ratings, or other suitable

current value (e.g., current sensor rating) are shown on both

the top and bottom horizontal axes. The time in seconds

is shown on the vertical axes. Approximate minimum and

maximum clearing time is readily determined from the char-

acteristics curves. Tripping characteristics meet both NEMA

and UL standards for rating and calibration.

Application

Time Current Curves

Long-Time, Short-Time Delay and Instantaneous

Application

Time Current Curves

Ground Fault

Physical Data

Power Break® II 800- Amp Stationary

1. ¼ - 20 mounting bolts to be furnished by customer.

2. To prevent heating, do not mount breaker to magnetic steel back support.

3. All outline dimensions are the same for manually and electrically operated devices.

4. Dimensions in brackets are in [millimeters].

5. 4.50 [114.3] minimum distance above breaker to metal in an area 5.31 x 16.00 [134.9 x 406.4] due to arc chamber venting.

Physical Data

Power Break® II 800-Amp Stationary

1. ¼ - 20 mounting bolts to be furnished by customer.

2. To prevent heating, do not mount breaker to magnetic steel back support.

3. All outline dimensions are the same for manually and electrically operated devices.

4. Dimensions in brackets are in [millimeters].

5. 4.50 [114.3] minimum distance above breaker to metal in an area 5.31 x 16.00 [134.9 x 406.4] due to arc chamber venting.

Physical Data

Power Break® II 1600-2000- Amp Stationary

1. ¼ - 20 mounting bolts to be furnished by customer.

2. To prevent heating, do not mount breaker to magnetic steel back support.

3. All outline dimensions are the same for manually and electrically operated devices.

4. Dimensions in brackets are in [millimeters].

5. 4.50 [114.3] minimum distance above breaker to metal in an area 5.31 x 16.00 [134.9 x 406.4] due to arc chamber venting.

Physical Data

Power Break® II 1600-2000-Amp Stationary

1. ¼ - 20 mounting bolts to be furnished by customer.

2. To prevent heating, do not mount breaker to magnetic steel back support.

3. All outline dimensions are the same for manually and electrically operated devices.

4. Dimensions in brackets are in [millimeters].

5. 4.50 [114.3] minimum distance above breaker to metal in an area 5.31 x 16.00 [134.9 x 406.4] due to arc chamber venting.

Physical Data

1. All outline dimensions are the same for manually and electrically operated devices.

2. Dimensions in brackets are in [millimeters].

3. Any compartment metal in 6.50 X 14.00 [165.1 x 355.6] area below (and above at 1600A, minimum stacking height) must be removed. Reference

UL891 dead-front switchboards standard-electrical spacing requirements.

4. 3.74 [ 95] minimum distance above substructure to any metal in an are 5.31 x 16.00 [134.9 x 406.4] due to arc chamber venting.

5. Customer’s location for drilling hole for horizontally or vertically interconnected mechanical interlock. See bottom or side view.

Power Break® II 800-Amp Drawout

Physical Data

Power Break® II 800-Amp Drawout

1. All outline dimensions are the same for manually and electrically operated devices.

2. Dimensions in brackets are in [millimeters].

3. Any compartment metal in 6.50 X 14.00 [165.1 x 355.6] area below (and above at 1600A, minimum stacking height) must be removed. Reference

UL891 dead-front switchboards standard-electrical spacing requirements.

4. 3.74 [ 95] minimum distance above substructure to any metal in an are 5.31 x 16.00 [134.9 x 406.4] due to arc chamber venting.

5. Customer’s location for drilling hole for horizontally or vertically interconnected mechanical interlock. See bottom or side view.

Physical Data

Power Break® II 1600-2000-Amp Drawout

1. All outline dimensions are the same for manually and electrically operated devices.

2. Dimensions in brackets are in [millimeters].

3. Any compartment metal in 10.00 X 14.00 [254.0 x 355.6] are below (and above at 1600A, minimum stacking height) must be removed. Reference

UL891 dead-front switchboards standard-electrical spacing requirements.

4. 3.74 [95] minimum distance above substructure to any metal in an are 53.1 x 16.00 [134.9 x 406.4] due to arc chamber venting.

5. Customer’s location for drilling hole for horizontally or vertically interconnected mechanical interlock. See bottom or side view.

Physical Data

Power Break® II 1600-2000-Amp Drawout

1. All outline dimensions are the same for manually and electrically operated devices.

2. Dimensions in brackets are in [millimeters].

3. Any compartment metal in 10.00 x 14.00 [254.0 x 355.6] area below (and above at 1600A minimum stacking height) must be removed.

Reference UL891 dead-front switchboards standard-electrical spacing requirements.

4. 3.74 [95] minimum distance above substructure to any metal in an area 5.31 x 16.00 [134.9 x 406.4] due to arc chamber venting.

5. Customer’s location for drilling hole for horizontally or vertically interconnected mechanical interlock. See bottom or side view.

Physical Data

Power Break® II Information, 800-2000-Amp Frames

1. Dimensions in brackets are [metric].

2. Busbars or cables should be sized per UL891 dead-front switchboards standard.

* Screw terminal position relative to front of circuit breaker

Note: Wire range #18 thru #12 solid or stranded copper wire. Torque: 9lb-in.

Physical Data

Power Break® II Information, 800-2000-Amp Frames

1. Dimensions in brackets are [metric].

2. Busbars or cables should be sized per UL891 dead-front switchboards standard.

Frame

Rating

Breaker

Type

Weight Minimum

Compartment

Volume

Minimum Door

Ventilation

Standard Door Cut-Out Optional Door Cut- Out

Breaker Drawout

Substructure

A B C A B C

800A

Stationary

Mounted

71 lbs.*

[32,3 kg]

N/A 3447 cu. in.

[56486 cu. cm]

None 10

[254]

[356]

1.69

[42.9]

9.83

[249.7]

13.38

[339.9]

1.605

[40.8]

1600A

106 lbs.

[48,2 kg]

60.0 sq. in. [387,1 sq. cm] Total

30.0 sq. in. [193,5 sq. cm] Top

30.0 sq. in. [193,5 sq. cm] Bottom

2000A

86.4 sq. in. [557,4 sq. cm] Total

43.2 sq. in. [278,7 sq. cm] Top

43.2 sq. in. [278,7 sq. cm] Bottom

800A

Drawout

Mounted

106 lbs. *

[48,2 kg]

54 lbs

[24,5 kg] 3780 cu. in.

[61943 cu. cm]

None 10

[254]

[356]

N/A 9.83

[249.7]

13.38

[339.9]

N/A

1600A

125 lbs.*

[56,8 kg}

68 lbs.

[30,9 kg]

None

2000A 5670 cu. in.

[92915 cu. cm]

34.2 sq. in. [220,6 sq. cm] Total

29.5 sq. in. [190,3 sq. cm] Top

4.66 sq. in. [30,0 sq. cm] Bottom

N/A = Not Applicable

* Add 9 lbs. [4.1 kg] for electrical operator

Table 1

Trim Plate Required

Flush Front or Non-hinged

Door Construction - Trim Plate may

be omitted

Trim Plate Required

Flush Front or Non-hinged

Door Construction - Trim Plate may

be omitted

Physical Data

Power Break® II 2500-3000-Amp Front Connected

1. All outline dimensions are the same for manually and electrically operated devices.

2. Dimensions in brackets are in [millimeters].

3. 8.00 [ 203,2] minimum distance above breaker to metal due to arc chute venting.

Physical Data

Power Break® II 2500-3000-Amp Front Connected

1. All outline dimensions are the same for manually and electrically operated devices.

2. Dimensions in brackets are in [millimeters].

3. 8.00 [203,2] minimum distance above breaker to metal due to arc chute venting.

Physical Data

Power Break® II 2500-Amp Back Connected

1. All outline dimensions are the same for manually and electrically operated devices.

2. Dimensions in brackets are in [millimeters].

3. 8.00 [203,2] minimum distance above breaker to metal due to arc chute venting.

Physical Data

Power Break® II 2500-Amp Back Connected

1. All outline dimensions are the same for manually and electrically operated devices.

2. Dimensions in brackets are in [millimeters].

3. 8.00 [203,2] minimum distance above breaker to metal due to arc chute venting.

Physical Data

Power Break® II 3000-Amp Back Connected

1. All outline dimensions are the same for manually and electrically operated devices.

2. Dimensions in brackets are in [millimeters].

3. 8.00 [203,2] minimum distance above breaker to metal due to arc chute venting.

Physical Data

Power Break® II 3000-Amp Back Connected

1. All outline dimensions are the same for manually and electrically operated devices.

2. Demensions in brackets are in [millimeters].

3. 8.00 [203,2] minimum distance above breaker to metal due to arc chute venting.

Physical Data

1. All outline dimensions are the same for manually and electrically operated devices.

2. Dimensions in brackets are in [millimeters].

3. 8.00 [203,2] minimum distance above breaker to metal due to arc chute venting.

Power Break® II 4000-Amp Front Connected

Physical Data

Power Break® II 4000-Amp Front Connected

1. All outline dimensions are the same for manually and electrically operated devices.

2. Dimensions in brackets are in [millimeters].

3. 8.00 [ 203,2] minimum distance above breaker to metal due to arc chute venting.

Physical Data

1. All outline dimensions are the same for manually and electrically operated devices.

2. Dimensions in brackets are in [millimeters].

3. 4.25 [108] minimum distance above substructure (8.00 [203.2] from top of circuit breaker) to any metal in an area 9.00 x 16.00 [228,6 x 406,4] due

to arc chamber venting.

4. Customer’s location for drilling hole for horizontally or vertically interconnected mechanical interlock, See bottom or side view.

Power Break® II 2500-3000 Amp Drawout

Physical Data

1. All outline dimensions are the same for manually and electrically operated devices.

2. Dimensions in brackets are in [millimeters].

3. 4.25 [108] minimum distance above substructure (8.00 [203.2] from top of circuit breaker) to any metal in an area 9.00 x 16.00 [228,6 x 406,4] due

to arc chamber venting.

4. Customer’s location for drilling hole for horizontally or vertically interconnected mechanical interlock, See bottom or side view.

Physical Data

Power Break® II 4000 Amp Drawout

1. All outline dimensions are the same for manually and electrically operated devices.

2. Dimensions in brackets are in [millimeters].

3. 4.25 [108] minimum distance above substructure (8.00 [203.2] from top of circuit breaker) to any metal in an area 9.00 x 16.00 [228,6 x 406,4] due

to arc chamber venting.

4. Customer’s location for drilling hole for horizontally or vertically interconnected mechanical interlock. See bottom or side view.

Power Break® II 4000 Amp Drawout

Physical Data

1. All outline dimensions are the same for manually and electrically operated devices.

2. Dimensions in brackets are in [millimeters].

3. 4.25 [108] minimum distance above substructure (8.00 [203.2] from top of circuit breaker) to any metal in an area 9.00 x 16.00 [228,6 x 406,4] due

to arc chamber venting.

4. Customer’s location for drilling hole for horizontally or vertically interconnected mechanical interlock. See bottom or side view.

Physical Data

Power Break® II 800-2000A Stationary Mechanical Interlock

Physical Data

Power Break® II 800-2000A Stationary Mechanical Interlock

Physical Data

Power Break® II 800-2000A Drawout Mechanical Interlock

1. All outline dimensions are the same for manually and electrically operated devices.

2. Dimensions in brackets are in [millimeters].

3. Customer’s location for drilling hole for horizontally or vertically interconnected mechanical interlock. See bottom or side view.

Physical Data

Power Break® II 800-2000A Drawout Mechanical Interlock

1. All outline dimensions are the same for manually and electrically operated devices.

2. Dimensions in brackets are in [millimeters].

3. Customer’s location for drilling hole for horizontally or vertically interconnected mechanical interlock. See bottom or side view.

Physical Data

Power Break® II 2500-3000A Stationary Mechanical Interlock

Physical Data

Power Break® II 2500-3000A Stationary Mechanical Interlock

Physical Data

Power Break® II 2500-3000A Drawout Mechanical Interlock

1. All outline dimensions are the same for manually and electrically operated devices.

2. Dimensions in brackets are in [millimeters].

3. Customer’s location for drilling hole for horizontally or vertically interconnected mechanical interlock. See bottom or side view.

Physical Data

Power Break® II 2500-3000A Drawout Mechanical Interlock

1. All outline dimensions are the same for manually and electrically operated devices.

2. Dimensions in brackets are in [millimeters].

3. Customer’s location for drilling hole for hoizontally or vertically interconnected mechanical interlock. See bottom or side view.

Physical Data

Power Break® II 4000A Stationary Mechanical Interlock

Physical Data

Power Break® II 4000A Stationary Mechanical Interlock

Physical Data

Power Break® II 4000A Drawout Mechanical Interlock

1. All outline dimensions are the same for manually and electrically operated devices.

2. Dimensions in brackets are in [millimeters].

3. Customer’s location for drilling hole for horizontally or vertically interconnected mechanical interlock. See bottom or side view.

Physical Data

Power Break® II 4000A Drawout Mechanical Interlock

1. All outline dimensions are the same for manually and electrically operated devices.

2. Dimensions in brackets are in [millimeters].

3. Customer’s location for drilling hole for horizontally or vertically interconnected mechanical interlock. See bottom or side view.

Physical Data

Power Break® II Information, 2500A-4000A Frames

*Screw terminal position relative to front of circuit breaker

Note: Wire range #18 thru #12 solid or stranded copper wire. Torque: 9lb-in

Physical Data

Power Break® II Information, 2500A-4000A Frames

N/A = Not Applicable

* Add 9 lbs. [4.1 kg.] for electrical operator

1. Dimensions in brackets are [metric].

2. Busbars or cables should be sized per UL891 dead-front switchboards standard.

3. “D” Dia. = 4000 Amp front connected breaker mounting holes.

4. “E” Dia. = 2500A and 3000A front connected breaker mounting holes.

5. “F” Dia. = 2500A and 3000A back connected breaker mounting inserts.

Frame

Rating

Breaker

Type

Weight Minimum

Compartment

Volume

Minimum Door Ventilation Standard Door Cut-Out Optional Door Cut-Out

Breaker Drawout Substructure A B C A B C

2500A

Back Connected 167 lbs. [76 kg]*

N/A

13,950 cu. in.

[228,600 cu. cm]

160 sq. in. [1,032 sq. cm] Total

80 sq. in. [516 sq. cm] Top

80 sq. in. [516 sq. cm] Bottom

[254]

[356

.34

[8,6]

2.17

[55,1]

9.83

[249,7]

13.38

[339,9]

255

[6,4]

2.255

[57,28]

Front Connected 178 lbs. [81 kg]*

3000A

Back Connected 216 lbs. [98.3 kg]* 20,832 cu. in.

[341,375 cu. cm]

270 sq. in. [1,742 sq. cm] Total

135 sq. in. [871 sq. cm] Top

135 sq. in. [871 sq. cm] Bottom

Front Connected 179 lbs. 81.4 kg]*

4000A Front Connected 320 lbs. [145.6 kg] 25,143 cu. in.

[412,020 cu. cm]

270 sq. in. [1,742 sq. cm] Total

135 sq. in. [871 sq. cm] Top

135 sq. in. [871 sq. cm] Bottom

2500A

Drawout

Mounted

232 lbs. [105.6 kg]* 111 lbs. [50.5 kg]* 10.991 cu. in

[180.108 cu. cm.]

246 sq. in. [1,587 sq. cm] Total

123 sq. in. [793,5 sq. cm] Top

123 sq. in. [793,5 sq. cm] Bottom

[254]

[356]

3.84

[97.5]

9.83

[249.7]

13.38

[339.9]

3.755

[95.38]

3000A 233 lbs. [106 kg]* 111 lbs. [50.5 kg]* 10.991 cu. in

[180.108 cu. cm.]

246 sq. in. [1,587 sq. cm] Total

123 sq. in. [793,5 sq. cm] Top

123 sq. in. [793,5 sq. cm] Bottom

4000A 295 lbs. [134.2 kg]* 167 lbs. [76 kg]* 15.138 cu. in

[248,074 cu. cm.]

246 sq. in. [1,587 sq. cm] Total

123 sq. in. [793,5 sq. cm] Top

123 sq. in. [793,5 sq. cm] Bottom

Trim plate

Required

Flush Front or

Non-hinged Door

Construction Trim

Plate may

be omitted

Trim plate

Required

Table 1

Physical Data

Power Break® II 800-Amp T-Studs

Catalog No. Material Finish “A”

SP08FCA AL Tin 78 + .01 - .02

[19,8 + 0,3 -0,5]

SP08FCC AL Tin 375 + .005

[9,53 + 0,13]

1. T-studs may be mounted to either the line or load straps, and oriented horizontally or vertically as shown.

2. Dimensions in brackets are in [millimeters].

Physical Data

Power Break® II 1600-2000 Amp T-Studs

1. T-studs may be mounted to either the line or load straps, and oriented horizontally or vertically as shown.

2. Dimensions in brackets are in [millimeters].

Catalog No. Material Finish “A” Breaker Amps

SP20FCA AL Tin

1600A-2000A

SP20FCC CU Tin 750 + 005 [ 19.05 + 13] 1600A-2000A

+ .010

-.020

+ 0,25

-0,51

[19,8 ]

Physical Data

Power Break® II 2000, 2500, 3000-Amp T-Studs

Physical Data

Power Break® II 4000-Amp T-Studs

1. SPS40FCC may be used on all poles or alternated with SPS40LFCC as shown.

Physical Data

Power Break® II 2000-2500-Amp T-Studs, Back Connected

Physical Data

Power Break® II TPLUGA08 On 800 Amps

1. Dimensions in brackets are [metric].

Physical Data

Power Break® II TPLUGA16 On 1600 Amps

1. TPLUGA 16 kit ﬁts on line or load side of all 1600A Power Break or Power Break II circuit breakers.

2. Dimensions in brackets are in [millimeters].

Physical Data

Power Break® II TPLUGA16 On 1600 Amps

1. TPLUGA 16 kit ﬁts on line or load side of all 1600A Power Break or Power Break II circuit breakers.

2. Dimensions in brackets are in [millimeters].

Physical Data

Power Break® II SPLUGA20 On 2000 Amps

1. SPLUGA20 kit ﬁt on line or load side of all 2000A Power Break II circuit breakers. Does not ﬁt on original Power Break 2000A circuit breaker.

Physical Data

Power Break® II SPLUGA20 On 2000 Amps

1. SPLUGA20 kit ﬁt on line or load side of all 2000A Power Break II circuit breakers. Does not ﬁt on original Power Break 2000A circuit breaker.

Physical Data

Power Break® II Lug Kits For 2500A Frame

1. Lug kit contains complete 3 pole line or load connection.

2. SPS20BCA and SPS25BCC back connected studs for use with back connected Power Break II circuit breakers.

3. SPS20FCA and SPS25FCC front connected studs for use with front connected Power Break II circuit breakers.

Physical Data

Power Break® II Lug Kits for 2500A Frame

Note A: Lug kit contains complete 3 pole line or load connection.

Note B: SPS20BCA and SPS25BCC back connected studs for use with back connected Power Break II circuit breakers.

Note C: SPS20FCA and SPS25FCC front connected studs for use with front connected Power Break II circuit breakers.

Catalog No. Amps “A” “B” “C” Use with Connector Catalog No.

TSLUG08 800 4.00 3 2

SPS20BCA (See Note: B) &

SPS20FCA (See Note: C)

TSLUG12 1200 4.00 4 2

TSLUG16 1600 4.50 5 3

TSLUG20 2000 4.50 6 3

TSLUG25 2500 6.25 7 4 SPS25BCC (See Note: B) &

SPS25FCC (See Note: C)

Physical Data

Power Break® II Lug Kits For 3000-4000A Frames

Note A: 3000 Amp back connected circuit breaker has non-removable integral connectors.

Note B: Lug kit contains complete 3 pole line or load connection as shown.

Note C: SPS30FCC and SPS40FCC front connected studs for use with front connected Power Break II circuit breakers.

100

Physical Data

Power Break® II Lug Kits for 3000-4000A Frames

Note A: 3000 Amp back connected circuit breaker has non-removable integral connectors.

Note B: Lug kit contains complete 3 pole line or load connection as shown.

Note C: SPS30FCC and SPS40FCC front connected studs for use with front connected Power Break II circuit breakers.

Catalog No. Amps “A” “B” “C” “D” “E” “F” Use with Connector Catalog No.

TSLUG30 3000 7.50 7.50 9 5 4.00 5.31 SPS30FCC (See Notes A & B)

TSLUG40 4000 7.94 9.00 11 4 6.00 6.75 SPS40FCC (See Note C)

101

Physical Data

Power Break® II UVR/ST Transformer For 480V And 600V Accessories

Part Ge Xfmr.

Cat. No.

Voltage Ref 60Hz

kVA

Approx.

Weight

(lbs.)

Maximum Envelope Mounting

Dept Width Height Depth Width Height

A B C D E F

P1 9T58K0042 480V .050 2.6 3.97 3.29 2.79 2.16 2.50 .219 x 7.50

P2 9T58K0062 600V .087 3.4 4.47 3.29 2.79 2.66 2.50 .219 x .750

102

Physical Data

Power Break® II Enclosure, 800A Frame

103

Physical Data

Power Break® II Enclosure, 800A Frame

104

Physical Data

Power Break® II Enclosure, 1600A And 2000A Frames

105

Physical Data

Power Break® II Enclosure, 1600A And 2000A Frames

106

Table 106.1

Outline Drawings – Circuit Breakers

Frame Rating (amps) Stationary Breaker

Outline Drawing GEM

3025

Drawout Breaker

Outline Drawing GEM

3025

800 SH1, 5, 6, 14 SH3, 5, 6, 15

1600 SH2, 5, 6, 14 SH4, 5, 6, 15

2000 SH2, 5, 6, 14 SH4, 5, 6, 15

2500 SH6, 7, 9, 13, 16 SH6, 11, 13, 19

3000 SH6, 7, 10,13, 16 SH6, 11, 13, 19

4000 SH6, 8, 13, 17 SH6, 12, 13, 18

Table 106.2

Outline Drawings – T-Studs For Stationary Breakers

Frame

Size

Max

Amp

Rating

T-Stud Catalog Number Outline

Draw-

ing GEM

3027

Front

Connected

Back

Connected

800 800 SP08FCA, SP08FCC — SH1

1600 1600 SP20FCA, SP20FCC — SH2

2000 2000 SP20FCA, SP20FCC — SH2

2500

2000 SPS20FCA — SH3

2000 SPS20BCA SH5

2500 SPS25FCC SH3

2500 SPS25BCC SH5

3000 3000 SPS30FCC

Supplied as

standard- not

removable

SH3

4000 4000 SPS40FCC,

SPS40LFCC — SH4

Table 106.3

Outline Drawings – Lug Kits for Stationary Breakers

Frame

Size

Maximum

Ampere Rating

Lug Kit

Catalog Number

Outline Drawing

GEM 3026

3000

800 TSLUG08 SH4

1200 TSLUG12 SH4

1600 TSLUG16 SH4

2000 TSLUG20 SH4

2500 TSLUG25 SH4

3000 TSLUG30 SH5

4000 4000 TSLUG40 SH5

Table 106.4

Outline Drawings – Neutral Sensors For Power+™, MicroVersa Trip Plus™

And MicroVersaTrip PM™ Units

Breaker

Frame Amps

Sensor Rating

(amps)

Catalog

Number

Outline Drawing

Number

800

200

400/200

600/300

800/400

TSVG302

TSVG304A

TSVG306A

TSVG308A

1600

800/400

1000/500

1200/600

1600/1000

TSVG808A

TSVG810A

TSVG812A

TSVG816A

2000 2000/1000 TSVG20A 139C5016SHI

2500/300

800/400

1000/500

1200/600

1600/1000

2000/1200

2500/1800

3000/2400

TSVG808A

TSVG810A

TSVG812A

TSVG816A

TSVG820A

TSVG825A

TSVG830A

4000 4000/3000 TSVG940A 139C5016SH2

 Match neutral current sensor rating (or tap setting) to circuit breaker sensor rating.

 For use with multiple-source ground-fault protection schemes. Rating does not

match MicroVersaTrip® Trip Unit frame sensor.

Table 106.5

Outline Drawings Lug Adapter Kits For Stationary Breakers

Maximum Ampere

Rating

Adapter Kit Catalog

Number

Outline Drawing

GEM 3026

800 A TPLUGA08 SH1

1600 A TPLUGA16 SH2

2000 A SPLUGA20 SH3

Physical Data

107

Physical Data

Table 107.1

Outline Drawings – Enclosures

Enclosure

Catalog

Number

Frame

Rating

Lugs

Per

Pole

Lugs Wire Range

(kcmil, CU/AL)

Outline

Drawing

GEM 3133

SPB08W 800 A 6 #2-600 or (2) #1/0-250 SH1

SPB16W 1600 A 12 #3/0-800 SH2

SPB20W 2000 A 14 #3/0-800 SH2

Table 107.2

Weight And Space Requirements

Frame

Rating

Breaker

Type

Weight Minimum

Compartment

Volume

Minimum

Door Ventilation

Breaker Drawout

Substructure

800A

Stationary

Mounted

71 Lbs. *

(32.3 Kg)

N/A 3447 Cu. In.

(56,486 Cu. Cm)

None

1600A

79 Lbs. *

(35.9 Kg)

60.0 Sq In. (387.1 Sq. Cm) Total

30.0 Sq In. (193.5 Sq Cm) Top

30.0 Sq In. (193.5 Sq Cm) Bottom

2000A

86.4 Sq. In. (557.4 Sq. Cm) Total

43.2 Sq. In. (278.7 Sq Cm) Top

43.2 Sq. In. (278.7 Sq Cm) Bottom

800A

Drawout Mounted

106 Lbs.*

(48.2 Kg)

54 Lbs

(24.5 Kg) 3780 Cu. In

(61,943 Cu. Cm)

None

1600A

125 Lbs. *

(56.8 Kg)

68 Lbs.

(30.9 Kg)

None

2000A 5670 Cu. In

(82,915 Cu. Cm)

34.2 Sq. In (220.6 Sq. Cm) Total

29.5 Sq. In. (190.3 Sq. Cm) Top

4.66 Sq. In. ( 30.0 Sq. Cm) Bottom

2500A

Back Connected 167 Lbs. (76 Kg)*

N/A

13,950 Cu. In.

(228,600 Cu. Cm)

160 Sq. In. (1032 Sq. Cm) Total

80 Sq In. ( 516 Sq. Cm) Top

80 Sq In. ( 516 Sq. Cm) Bottom

Front Connected 178 Lbs. (81 Kg) *

3000A

Back Connected 216 Lbs. ( 81.4 Kg) * 20,832 Cu. In.

(341,375 Cu. Cm)

270 Sq In. (1742 Sq. Cm) Total

135 Sq. In. ( 871 Sq. Cm) Top

Front Connected 179 Lbs. (81.40) *

4000A Front Connected 320 Lbs. (145.6 Kg)* 25,143 Cu. In

412,020 Cu. Cm)

270 Sq In. (1742 Sq. Cm) Total

135 Sq. In. ( 871 Sq. Cm) Top

2500A 232 Lbs. (105.6 Kg)* 111 Lbs. (50.5 Kg) 10,991 Cu. In.

(180,108 Cu. Cm)

246 Sq. In. (1587 Sq Cm) Total

123 Sq. In. ( 793.5 Sq Cm) Top

123 Sq. In. ( 793.5 Sq. Cm) Bottom

3000A Drawout Mounted 233 Lbs. (106 Kg) * 111 Lbs. (50.5 Kg) 10,991 Cu. In.

(180,108 Cu. Cm

246 Sq. In. (1587 Sq Cm) Total

123 Sq. In. ( 793.5 Sq Cm) Top

123 Sq. In. ( 793.5 Sq. Cm) Bottom

4000A 259 Lbs. (134.2 Kg)* 167 Lbs (76 Kg) 15,138 Cu. In.

(248,074 Cu. Cm)

246 Sq. In. (1587 Sq Cm) Total

123 Sq. In. ( 793.5 Sq Cm) Top

123 Sq. In. ( 793.5 Sq. Cm) Bottom

N/A = Not Applicable * Add 9 lbs. (4.1 Kg) for electrical operator

108

Underwriters Laboratories® (UL)

Publication Stock, 333 Pﬁngsten Road

Northbrook, Il 60062 USA

Standard UL 489 and UL 489-SB2 Molded Case Circuit Break-

ers and Circuit Breaker Enclosures

National Electrical Manufactures Association (NEMA)

NEMA Publication, 155 East 44th Street,

New York, NY 10017 USA

AB-1 Standards Publication, Molded Case Circuit Breakers

Institute of Electrical and Electronics Engineers (IEEE)

ICEE, 345 East 47th Street,

New York, NY 10017 USA

American National Standard Institute (ANSI)

ANSI, 11 West 42nd Street,

New York, NY 10036 USA

ANSI/IEEE C37.90.1 – 1989

IEEE Standard Surge Withstand Capability (SWC)

Tests for Protective Relays and Relay Systems

ANSI/IEEE C37.90.2 – 1993

Withstand Capability of Relay Systems to Radiated Electro-

magnetic Interference from Transceivers

Standards and References

International Electrotechnical Committee (IEC)

Bureau Central de la Commission

Electrotechnique Internationale

3 rue de Varamb’e

Geneve, SUISSE

IEC 801-2 2nd Edition 1991-04

Electromagnetic Compatibility for Industrial-Process

Measurement and Control Equipments

Part 2: Electrostatic Discharge Requirements

National Electrical Code®

Order from National Fire Association

Batterymarch Park

Quincy, MA 02269

American Society for Testing and Materials (ASTM)

1916 Race Street

Philadelphia, PA 19103 USA

ASTM B117-73 (Reapproved 1979)

Standard Method of Salt Spray (Fog) Testing

Military Standard (MIL-STD)

Defense Printing Service

700 Robbins Avenue, Bldg. 4D

Philadelphia, PA 19111-5094 USA

MIL-STD-810E

Environmental Test Methods and Engineering Guidelines

109

General Requirements

Circuit Breakers shall be of insulated case construction. They

shall be UL Listed under Standard UL 489, UL 489-SB2, CSA

Certiﬁed, and IEC 947-2 Certiﬁed and shall meet the require-

ments of NEMA Standard AB1.

Circuit breakers shall be (manually) (electrically) operated,

(drawout) (stationary) mounted with features and accessories

described in these requirements. Breakers shall have a mini-

mum voltage rating of 600 Vac, and shall be rated to carry

100% of the current rating of the breaker continuously.*

Breakers shall have minimum UL Listed interrupting ratings

as indicated on the drawings. All manually operated breakers

shall be ﬁeld convertible to electrical operation by means of

the addition of an internally mounted electrical operator. Ad-

dition of an electrical operator shall not change the physical

dimensions of a breaker.

Circuit breakers shall be constructed of a high-strength,

glass-reinforced insulating case. Construction shall provide a

double level of insulation between primary current-carrying

parts and operating personnel. The interrupting mechanism

shall contain arc chutes with steel vent grids to suppress arcs

and cool vented gases. Interphase barriers shall be included

to completely isolate each pole. For each breaker, the close

and latch rating shall be equal to its short-time rating to help

assure selectivity with downstream devices when closing

into a fault.

Breakers shall contain a true two-step stored energy operat-

ing mechanism providing quick-make, quick-break operation

capable of charging-after-closing operation. It shall be pos-

sible to discharge the closing spring without closing the main

contacts. The maximum closing time shall be three cycles at

nominal voltage.

Attempting to close a circuit breaker while an accessory un-

dervoltage release is de-energized or, while a shunt trip with

lockout is energized, or while a bell alarm with lockout is ac-

tivated, shall result in a “kiss-free” operation of the contacts.

Common tripping of all poles shall be standard. Breakers

shall be capable of a minimum of 10,000 mechanical open

and close operations without any required service.

When drawout breakers are in the fully withdrawn position,

there shall be provisions for tilting the breakers for inspec-

tion, maintenance or removal. It shall be possible to replace

the primary disconnect ﬁngers with the breakers in the

withdrawn position.

Each breaker shall include a retractable charging handle,

close pushbutton, open pushbutton, closing spring charge/

discharge indicator and breaker ON/OFF indicator mounted

on the front of the breaker. Each breaker shall have as stan-

dard, a padlocking provision to prevent closing the breaker

when padlocks are installed. Padlocking provisions shall ac-

cept up to three padlocks with 1/4” to 3/8” diameter shanks.

This provision shall meet OSHA and California Code (EUSERC)

requirements.

Each stationary and drawout breaker shall have provisions

for up to 72 dedicated secondary terminal points. All discon-

nected points shall be capable of being probed from the

front of the breaker. All breaker control and accessory wiring,

including wiring for future accessories, shall be pre-wired to

integral terminal blocks which shall be clearly identiﬁed by

number and function. Each terminal point shall have space

available for two AWG#18#12 wires per terminal and cus-

tomer circuit identiﬁcation.

Each circuit breaker shall contain the following accessories

(shunt trip with or without lockout) (undervoltage release)

(bell alarm) (bell alarm with lockout) [ (4 or 8 or 12 stage) SPDT

auxiliary switches] (remote close solenoid) (remote “charged”

indicator). All accessories shall be ﬁeld installable. Field instal-

lation of shunt trip (with or without lockout), undervoltage

release, bell alarms – with and without lockout shall require

no adjustments, no internal wiring and no removal of the

circuit breaker cover. The bell alarm and bell alarm with

lockout shall each contain a mechanical target, which shall

extend from the front cover when the device operates. The

bell alarm (alarm only) shall reset automatically when the

breaker is closed. The bell alarm with lockout must be reset

by depressing the mechanical pop-out target before the

breaker can be closed. The bell alarm and the bell alarm with

lockout shall be independently ﬁeld-conﬁgurable to operate

in response to an overcurrent and/or protective relay opera-

tion, plus any combination of shunt trip and/or undervoltage

release operation – including no response to a protection

trip, shunt tripping or undervoltage release trip. Note: for the

Power+™ trip unit, the bell alarm and bell alarm with lock-

out respond to an overcurrent operation only. The shunt trip

(with or without lockout) shall be continuously rated with no

requirements for a cut-off switch.

Each circuit breaker shall contain the following mechanical

accessories (operation counter) (sealable limited access “ON”

and “OFF” pushbutton cover) [ (1, or 2 or 3 or 4) cylinder key

interlock provision ] (shutters to cover drawout/stationary

primary disconnects when the breaker is racked out) (racking

padlock provision to prevent operation of the breaker racking

mechanism) (door interlock with defeat mechanism to pre-

vent opening the hinged breaker compartment door when

the breaker is closed) (walking beam interlock for stationary

breakers to prevent two adjacent breakers from being on

the same time) (mechanical interlock for drawout breakers

to prevent two adjacent breakers from being on at the same

time). All mechanical accessories shall be capable of being

ﬁeld installed.

* 4000A Stationary 80% rated.

Guide Form Speciﬁcations

110

Breaker Protective System (MicroVersaTrip Plus™ and

MicroVersaTrip PM™)

1. Each circuit breaker shall be equipped with a protec-

tive trip unit system to protect against overloads, short

circuits (and ground faults) as speciﬁed in the following

subparagraphs. The protective trip unit shall consist of a

solid-state, microprocessor-based, programmer; tripping

means; current sensors; power supply and other devices

as required for proper operation.

2. As a minimum, the trip unit shall have the following fea-

tures and functions:

a) The housing shall be a metallic enclosure to protect

against magnetic interference, dust and other con-

taminants.

b) The protective system shall have reliable program-

mable controls with repetitive accuracy and precise

unit settings.

c) All current sensing shall employ true rms technology

for detecting overloads, (short-time overcurrent con-

ditions), high-level instantaneous overcurrent condi-

tions, (and ground-fault conditions).

d) A high-contrast, liquid crystal display – LCD – unit

shall display settings, trip targets, and speciﬁed

metering displays. The trip unit shall be equipped with

long-life lithium batteries – with automatic time delay

shut-off features – to provide both programming and

observation of trip targets or other functions when

the breaker is de-energized.

e) A multi-button keypad to provide local set-up and

readout on the LCD of all trip settings.

f) UL Listed, CSA Certiﬁed, IEC 947-2 Certiﬁed, ﬁeld-in-

stallable, interchangeable rating plugs. It shall not

be necessary to change or remove the trip unit to

change the trip rating. Rating plugs shall contain

rejection features to prevent installation of a plug with

an incorrect current sensor rating.

g) Integral test jack for connection of a battery pack or

test kit to the breaker.

h) (When speciﬁed) the ground-fault function shall

contain a memory circuit to integrate low-level arcing

fault currents with time to sum intermittent ground-

fault current spikes.

i) A mechanism with provisions for sealing the rating

plug, the trip unit, and the “ENTER” key on the protec-

tive trip unit to make the installation tamper-resistant.

j) The unit shall be dual-rated for both 50Hz and 60Hz

operation. Noise immunity shall meet the require-

ments of ANSI Standard C37.90.2

k) The trip unit shall have an integral, resettable trip

counter to record the number of long-time, short-

time, instantaneous and ground-fault trips.

l) The trip unit shall display trip targets for long-time,

short-time, instantaneous and ground-fault trips.

3. The trip units for the main and tie breakers shall include

the following protective functions:

a) Adjustable long-time current settings.

b) Adjustable long-time delay with four time delay

bands.

c) Long-time pickup warning indicator.

d) Trip targets for long-time, instantaneous (and short-

time, when speciﬁed), and ground fault (when speci-

ﬁed).

e) SELECT ONE OF THE FOLLOWING

1) Adjustable instantaneous pickup.

2) Adjustable short-time pickup and delay, with three

delay bands, and switchable l²t ramp and

adjustable instantaneous pickup.

3) Fixed high-range instantaneous pickup.

f) OPTIONAL: Adjustable ground-fault pickup and time

delay, with three delay bands and switchable l²t

ramp.

g) OPTIONAL: Zone-selective interlocking [SELECT ONE]

(for ground-fault conditions) (for both ground-fault

and short-time conditions).

4. The trip units for feeder breakers shall include the follow-

ing protective functions:

a. Adjustable long-time current settings

b) Adjustable long-time delay with four time delay

bands.

c) Long-time pickup warning indicator.

d) Tip targets for long-time, instantaneous (and short-

time, when speciﬁed), and ground fault (when speci-

ﬁed).

e) SELECT ONE OF THE FOLLOWING

1) Adjustable instantaneous pickup.

2) Adjustable short-time pickup and delay, with three

delay bands, and switchable l²t ramp and

adjustable instantaneous pickup.

3) Fixed high-range instantaneous pickup.

f.) OPTIONAL: Adjustable ground-fault pickup and time

delay, with three delay bands and switchable l²t

ramp.

g.) OPTIONAL: Zone-selective interlocking [SELECT ONE]

(for ground-fault conditions) (for both ground-fault

and short-time conditions).

Guide Form Speciﬁcations

111

5. The trip units shall include the following metering func-

tions, which shall be displayed on the LCD:

a. Current, rms (A of kA), each phase, ± 2.5% accuracy.

b. OPTIONAL: Note: If any of the following are included,

all will be included.

1) Voltage, rms, (V), line-to-line or line-to-neutral,

±1.5% accuracy.

2) Energy (kWh, MWh, GWh) total, ±4% accuracy,

user resettable.

3) Demand (kWh, MWH, GWh) over an adjustable

time period of 5 to 60 minutes, ±4% accuracy.

4) Peak demand (kW, MW), ± 4% accuracy, user

resettable.

5) Real power (kW, MW), line-to-line, line-to-neutral,

±4% accuracy.

6) Total (apparent) power (kVA, MVA), line-to-line, line-

to-neutral, ±4% accuracy.

6. OPTIONAL:

The trip unit shall include all of the following protec-

tive functions. However, it shall be possible to disable,

by user-programming, any combination of unwanted

protective functions.

a. Undervoltage, adjustable pickup – 50 to 90%, adjust-

able delay – 1 to 15 seconds.

b. Overvoltage, adjustable pickup – 110 to 150%, adjust-

able delay – 1 to 15 seconds.

c. Voltage unbalance, adjustable pickup – 10 to 50%,

adjustable delay – 1 to 15 seconds.

d. Current unbalance, adjustable pickup – 10 to 50%,

adjustable delay – 1 to 15 seconds.

e. Reverse power, selectable direction, adjustable

pickup-10kW to 990 kW, adjustable delay – 1 to 15

seconds.

7. OPTIONAL: The trip unit shall include communication

capability as follows:

a. The trip unit through dedicated secondary terminal on

the breaker shall provide a communication port for

communication with and access to a remote comput-

er via the breaker supplier’s standard communication

network and protocol.

b. All metering, setpoints, protective trip counts and

other event signaling shall be retrievable by the re-

mote computer.

Guide Form Speciﬁcations

8. Current sensors shall be mounted on the breaker frame

and shall use encapsulated construction to protect

against damage and moisture. (For ground-fault pro-

tection of a four-wire power system, a fourth–neutral

current– sensor shall be mounted in the cable compart-

ment, and shall be compatible with the phase overcur-

rent sensors.)

9. The trip unit’s LCD and programming functions shall be

operable at all times, even when the breaker is either

open or closed under a no-load condition. Metering

functions, other than current, protective relaying and

communication functions may require a separate power

supply within the equipment lineup. The external power

supply shall meet the breaker supplier’s standard rec-

ommendations for this type of application.

*With optional Target Module

112

Guide Form Speciﬁcations

Breaker Protective Systems (Power+™ Trip Units)

1. Each circuit breaker shall be equipped with a protec-

tive trip unit system to protect against overloads, short

circuits (and ground faults) as speciﬁed in the following

subparagraphs. The protective trip unit shall consist of a

solid-state, microprocessor-based, programmer; tripping

means; current sensors; power supply and other devices

as required for proper operation.

2. As a minimum, the trip unit shall have the following fea-

tures and functions:

a. The housing shall be a metallic enclosure to protect

against magnetic interference, dust and other con-

taminants.

b. The protective system shall have reliable program-

mable controls with repetitive accuracy and precise

unit settings.

c. All current sensing shall employ true rms technol-

ogy for detecting overloads, (short-time overcurrent

conditions and ground-fault conditions).

d. The trip unit shall be equipped with long-life lithium

batteries – with automatic time delay shut-off fea-

tures – to provide observation of trip targets.*

e. UL 489 and UL 489-SB2 Listed, CSA Certiﬁed, IEC 947-

2 Certiﬁed, ﬁeld-installable, interchangeable rating

plugs. It shall not be necessary to change or remove

the trip unit to change the trip rating. Rating plugs

shall contain rejection features to prevent installation

of a plug with an incorrect current sensor rating.

f. Integral test jack for connection of a battery pack or

test kit to the breaker.

g. (When speciﬁed) the ground-fault function shall

contain a memory circuit to integrate low-level arcing

fault currents with time to sum intermittent ground-

fault current spikes.

h. A mechanism with provisions for sealing the rating

plug and trip unit to make the installation tamper-re-

sistant.

i. The unit shall be dual-rated for both 50Hz and 60Hz

operation. Noise immunity shall meet the require-

ments of ANSI Standard C37.90.2

j. The trip unit shall display trip targets for long-time,

short-time, instantaneous and ground fault*.

3. The trip units for the main and tie breakers shall include

the following protective functions:

a. Adjustable long-time current settings.

b. Adjustable long-time delay with four time delay

bands.

c. Long-time pickup warning indicator*

d. Trip targets for overload, short circuit (when speciﬁed),

and ground fault (when speciﬁed).*

e. SELECT ONE OF THE FOLLOWING:

1) Adjustable instantaneous pickup.

2) Adjustable short-time pickup and delay, with three

delay bands, and switchable l²t ramp and

adjustable instantaneous pickup.

f. OPTIONAL: Adjustable ground-fault pick-up and time

delay, with three delay bands, and switchable l²t

ramp.

4. The trip units for feeder breakers shall include the follow-

ing protective functions:

a. Adjustable long-time current settings.

b. Adjustable long-time delay with four time delay

bands.

c. Long-time pickup warning indicator.*

d. Trip targets for overload, short circuit (when speciﬁed),

and ground fault (when speciﬁed)

e. SELECT ONE OF THE FOLLOWING:

1) Adjustable instantaneous pickup.

2) Adjustable short-time pickup and delay, with three

delay bands, and switchable l²t ramp and

adjustable instantaneous pickup.

f. OPTIONAL: Adjustable ground-fault pickup and time

delay, with three delay bands, and switchable l²t

ramp.

5. Current sensors shall be mounted on the breaker frame

and shall use encapsulated construction to protect

against damage and moisture. (For ground-fault pro-

tection of a four-wire power system, a fourth – neutral

current – sensor shall be mounted in the cable compart-

ment, and shall be compatible with the phase overcur-

rent sensors.)

*With optional Target Module

113

Power Break® Insulated Case Circuit Breakers

Power Break II Circuit Breaker Installation, Operation and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GEH-6270

Power+™ Trip Units ...............................................................................................DEH-049

MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip Units

MicroVersaTrip Plus and MicroVersaTrip PM Trip Units, Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GEH-6273

Voltage Conditioners for MicroVersaTrip Plus and MicroVersaTrip PM Units, Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . GEH-6254

24Vdc Power Supply for MicroVersaTrip Plus and MicroVersaTrip PM Trip Units, Instructions . . . . . . . . . . . . . . . . . . . . . . . GEH-6253

Power Leader™ Power Management

POWER LEADER Power Management System ......................................................................DEA-018

POWER LEADER Display Meter .....................................................................................DE-326

POWER LEADER Monitor ...........................................................................................DE-334

POWER LEADER Repeater .........................................................................................DE-333

POWER LEADER Communication Network Interface (CNI) Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DET-001

POWER LEADER Communication Junction Box .....................................................................DET-011

POWER LEADER Product Interface Module .........................................................................DET-025

POWER LEADER PCM/Gateway Module ............................................................................DET-013

POWER LEADER Distribution Software .............................................................................DET-002

POWER LEADER Distribution Software Packages ...................................................................DET-003

POWER LEADER Distribution Software – Computer Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DEE-001

Spectra Series™ Switchboards

Spectra Series Switchboards .....................................................................................GET-8032

Auto Throwover Equipment for Spectra Series and AV-Line Switchboards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GEA-10261

Ground Break® Ground Fault Relay System

GROUND BREAK Ground Fault Relay System .......................................................................GE-2964

Other Related Publications

114

Notes

115

116

Information contained in this application guide is based on established industry stan-

dards and practices. It is published in the interest of assisting preparation of plans and

speciﬁcations for insulated case circuit breakers. Neither the General Electric Company

nor any person acting on its behalf assumes any liability with respect to the use of,

or for damages or injury resulting from the use of any information contained in this

application guide.

GE Consumer & Industrial

41 Woodford Avenue

Plainville, CT 06062

Power Break is a registered trademark of the General Electric Company

www.geelectrical.com

GET-8052C 0707

Power Break® II Insulated Case Circuit Breakers GET-8052C

Power Break II GET 8052C 1000486169 Catalog

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