GE CK Fact Sheet

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MicroVersaTrip Plus™
& MicroVersaTrip PM ™
Conversion Kits for
GE Power Circuit Breakers

electro-mechanical
• tripEasilyunitsreplace
with the latest electronic,
digital trip unit technology
safe, reliable operation with
• Ensure
ANSI C37.59 tested kits
Improve system protection and
• increase
productivity by eliminating
nuisance tripping
Integrate mixed switchgear with kits
• available
for Westinghouse, I-T-E
& Allis Chalmers low voltage power
circuit breakers

GE AKU-2A-50
with MicroVersaTrip PM trip unit upgrade

The easy, cost-effective
way to increase reliability,
enhance performance and
extend the life of your
existing equipment.

GE Industrial Systems

Now upgrade your low-voltage
power circuit breakers with
electronic trip unit technology
Normal wear and tear of aging electro-mechanical
trip devices on low-voltage power circuit breakers
increases susceptibility to loss of calibration that
can subsequently jeopardize electrical power
system coordination, protection and reliability.
GE has channeled its decades of circuit breaker trip
system experience into the development of the
MicroVersaTrip® Plus and MicroVersaTrip® PM
conversion kits for GE, Westinghouse, I-T-E, and
Allis Chalmers low-voltage power circuit breakers.
ANSI C37.59 design verification tested to ensure safe,
reliable operation, these kits are designed to extend
the life of your mechanically sound breakers and…
• Eliminate costly downtime due to nuisance
tripping
• Improve electrical power system coordination
and protection
• Permit easy upgrades to communicating Power
Management Control Systems (PMCS)
• Provide safe, convenient closed-door local
metering via the optional Remote Display

MicroVersaTrip Plus conversion kit features
• Superior trip unit accuracy and system protection is achieved by
taking 64 samples per 60 Hz cycle. This provides true RMS sensing
of electrical distribution systems that include AC and DC variable
speed drives, rectifiers, induction heaters and other loads that
contribute to non-sinusoidal (high-harmonic) current wave forms.
• Easy system coordination with maximum flexibility is obtained
using multiple trip setpoints, time-delay bands and ramp time
functions.
• Visual pickup and trip indicators for overload, short circuit and
ground fault, display type of fault,
phase and current magnitude when
applicable
• Predictive and preventative
maintenance decisions are made
easily using the trip operations
counter that stores the total number
of Long time, Short time,
Instantaneous and Ground Fault
trips.
• Continuously self-testing microprocessor eliminates trip unit
bench-testing
• Non-volatile memory
• High-visibility LCD display
• Cold setup capability and target
viewing from long-life (5-year)
field- replaceable lithium battery – external power not required

Standard and optional features

• Positive setpoint recognition, values flash until entered and
accepted

Standard MicroVersaTrip Plus and MicroVersaTrip
PM adjustable trip unit functions include:

• Easy access 5-button keypad with positive action

• Current setting
• Long time
• Long time delay
• Instantaneous
• Local fault trip indicators
Optional features include:
• Short time
• Short time delay with or without I2t
• Ground fault
• Ground fault delay with or without I2t
• Switchable instantaneous/short time and ground
fault (off) (not UL approved for a listed breaker)
• Full function metering (MicroVersaTrip PM)
• Protective relaying (MicroVersaTrip PM)
• Industry standard open communications
capability (MicroVersaTrip PM)
• Remote display module
• Trip unit test set (TVRMS2)

• Phase selectable ammeter (±2% accuracy)
• Sealable, clear Lexan protective cover over LCD display and
“Enter” key prevents unauthorized access to protective functions
and target reset
• Interchangeable rating plug
• Quick-disconnect trip unit design speeds installation and allows for
easy upgrade to MicroVersaTrip PM units with communications
capability, full-function metering and optional protective relaying
functions

Easy conversion kit and
rating plug catalog number selection
Catalog Number Structure

AKO25 C 3 F 06 02 PM
Breaker
AK-1-15 = AK115
AK-15
= AKO15 7
AK-1-25 = AK125
AK-25
= AKO25 7
AKU-25
AKR-30
AKR-30H = AKR30
AKRU-30
AKR-30S
AKRU-30S = AKR3S
AK-1-50 = AK150
AK-50
AKU-508
AKT-50
= AKO50 7
AKS-50
AKSU-508
AKST-50
AKR-50
AKR-50H
AKRU-50
AKRT-50
AKRT-50H = AKR50 2
AKJ-50
AKJ-50H
AKJT-50
AKJT-50H
AK-758
= AKO75 3
AKR-75
= AKR75 3
AK-1008 = AKO103
AKR-100 = AKR103
AKW-100 = AKW103

Model
C = Generation

Wiring
3 Wire = 3
4 Wire1 = 4

Sensor Type
F = Fixed CTs

Frame

225

600

800
1600
2000
3000
3200
4000

Sensor Rating6
150A = 01
no CTs4 = XA
225A = 02
400A = 04
no CTs4 = XC
600A = 06
800A = 08
no CTs4 = XE
1600A = 16
no CTs4 = XF
2000A = 20
no CTs4 = XG
3000A = 30
3200A5 = 32
no CTs4,5 = XI
4000A = 40
no CTs4 = XJ

Sensor Rating Selection
Breaker Catalog Numbers

Sensors

AK-1-15
AK-15
AK-1-25
AK-25
AKU-25
AKR-30, AKR-30H
AKRU-30
AKR-30S, AKRU-30S
AK-1-50, AK-50, AKU-50, AKS-50, AKSU-50
AKR-50, AKR-50H, AKRU-50, AKJ-50, AKJ-50H
AKT-50, AKST-50, AKRT-50, AKRT-50H, AKJT-50, AKJT-50H
AK-75
AKR-75
AK-100, AKR-100, AKW-100

150A
225A
150A
225A
600A
150A
400A
800A
800A
1600A
2000A
3000A
3200A
4000A

Options
Blank = Plus
Trip Functions
LI
= 02
LIG = 03
LSI = 04
LSIG = 05
LS
= 06
LSG = 07
LSIGX = 08
LH9 = 09
LHG9 = 10
LSH9 = 11
LSHG9 = 12

M = Metering &
Communication
PM = Metering,
Communication &
Protective Relaying

Trip Unit Functions
LI
Long Time & Instantaneous
LIG Long Time, Instantaneous
& Ground Fault
LSI Long Time, Short Time
& Instantaneous
LSIG Long Time, Short Time,
Instantaneous & Ground Fault
LS Long Time & Short Time
LSG Long Time, Short Time
& Ground Fault
LSIGX Long Time, Short Time/Inst. &
Switchable Ground Fault (off), not
approved for a UL Listed breaker
LH Long Time & High-Range
Instantaneous
LHG Long Time, High-Range
Instantaneous & Ground Fault
LSH Long Time, Short Time &
High-Range Instantaneous
LSHG Long Time, Short Time, High-Range
Instantaneous & Ground Fault

1. Only applicable to trip units with ground fault
2. Not applicable for converting breakers equipped with Power Sensor -contact factory
3. Contact the factory for stationary breaker applications
4. Available only for MicroVersaTrip™ or MicroVersaTrip™ RMS-9 type AKR breakers equipped with fixed current sensors
5. Only available on AKR-75 breaker frames
6. Order rating plug separately, see chart on facing page
7. For converting AK-2 version breakers and newer, not applicable for AK-1 or AKR
8. Breakers equipped with older style open fuse lockout devices (OFLO), must be retrofitted with newer style OFLO device prior to conversion process.
Order replacement OFLO kits as follows: AKU-50 - order OFLO kit #121C287OG2, AK-75 - order OFLO kit #121C287OG3, AK-100 - order OFLO kit #121C287OG4
9. High range instantaneous trip function option (H) only available for AKO25 conversion kits

Easy conversion kit and
rating plug catalog number selection
Rating Plugs
(Rating plugs priced and ordered separately)
Frame Size Sensor Rating Current Rating Current Range
(Amps)
(Amps)
(Amps)
(Amps)
60
30-66
80
40-88
225
150
100
50-110
125
63-138
150
75-165
225
100
50-110
or
225
150
75-165
600
225
113-248
300
150-330
400
200-440
600
600
450
225-495
500
250-550
600
300-660
60
30-66
80
40-88
800
150
100
50-110
125
63-138
150
75-165
150
75-165
200
100-220
225
113-248
800
400
250
125-275
300
150-330
400
200-440
300
150-330
400
200-440
800
450
225-495
or
800
500
250-550
1600
600
300-660
700
350-770
800
400-880

Rating Plug
Catalog No.
TR1B60
TR1B80
TR1B100
TR1B125
TR1B150
TR225B100
TR225B150
TR225B225
TR6B300
TR6B400
TR6B450
TR6B500
TR6B600
TR1B60
TR1B80
TR1B100
TR1B125
TR1B150
TR4B150
TR4B200
TR4B225
TR4B250
TR4B300
TR4B400
TR8B300
TR8B400
TR8B450
TR8B500
TR8B600
TR8B700
TR8B800

Frame Size Sensor Rating Current Rating Current Range
(Amps)
(Amps)
(Amps)
(Amps)
600
300-660
800
400-880
1000
500-1100
1600
1600
1100
550-1210
1200
600-1320
1600
800-1760
800
400-880
1000
500-1100
1200
600-1320
2000
2000
1500
750-1650
1600
800-1760
2000
1000-2200
1200
600-1320
1600
800-1760
3000
3000
2000
1000-2200
2500
1250-2750
3000
1500-3300
1200
600-1320
1600
800-1760
3200
3200
2400
1200-2640
3200
1600-3520
1600
800-1760
2000
1000-2200
2500
1250-2750
4000
4000
3000
1500-3300
3600
1800-3960
4000
2000-4400

For details and ordering information, contact your local ED&C sales office, or visit us at www.ge.com/industrialsystems

Rating Plug
Catalog No.
TR16B600
TR16B800
TR16B1000
TR16B1100
TR16B1200
TR16B1600
TR20B800
TR20B1000
TR20B1200
TR20B1500
TR20B1600
TR20B2000
TR30B1200
TR30B1600
TR30B2000
TR30B2500
TR30B3000
TR32B1200
TR32B1600
TR32B2400
TR32B3200
TR40B1600
TR40B2000
TR40B2500
TR40B3000
TR40B3600
TR40B4000

MicroVersaTrip® PM conversion kits—
Power management made easy

Additional features
• Full-function metering* including

The enhanced MicroVersaTrip PM trip unit adds power
management system capability – including advanced
metering and protective relaying – to the basic functions of
the MicroVersaTrip Plus. When connected to GE’s Power
Management Control System (PMCS), it gives you the power
to increase productivity and reduce costs while meeting all
your electrical system monitoring needs. You can easily:

– current (Amps, kAmps)

• Use standard graphics packages that allow the end user to
view custom one-lines for metering and trending screens

– demand & peak demand (avg. kW, MW)

• Analyze energy consumption and power factor trends
to minimize utility demand and PF charges or provide
low-cost allocations

– voltage (Ph-Ph, Ph-N)
– energy (kWh, MWh, GWh)
– real power (kW, MW)
– total power (kVA, MVA)
– frequency (Hz)
• Optional protective relaying* functions include
– undervoltage
– overvoltage
– voltage unbalance

• Collect precise sequences of alarm and event information
to speed diagnosis and minimize downtime

– current unbalance
– power reversal

• Use alarm and event logs to assist with preventive
maintenance interval planning

– power direction setup

• Analyze system harmonics (with data input from PQM,
EPM 3710, EPM 3720 or EPM 7700 meters)
• Communicate with other devices, including Spectra
Series™ molded case and Power Break™ insulated
case breakers, full-function electronic power meters,
programmable logic controllers, GE Multilin protective
relays and “smart” motor starters

*

Requires potential transformer and
voltage conditioner inputs (not included
in kits – auxiliary panels sold separately)

• Utilize GE’s Power Management Control System and its
industry standard Modbus RTU, Ethernet TCP/IP
open protocols

Optional Remote Display
• Provides safe, convenient closed-door access to breaker metering, status
and setup functions
• Available for use with either MicroVersaTrip® Plus or MicroVersaTrip PM
trip units
• Rugged NEMA Type 1 enclosure with LCD display and keypad
• Mounts easily on outside of breaker compartment door
• Sealable, clear Lexan protective cover over display and “Enter” key
prohibits unauthorized trip setting changes
• Connects to breaker trip unit via tough non-flammable, non-toxic 20-pin
plug-in cable for fast installation

• Breaker trip unit operates independently if cable is disconnected

Everything you need in one package
GE’s MicroVersaTrip Plus™ and MicroVersaTrip PM™ kits
are shipped complete with detailed installation instructions
and everything needed for fast and easy trip unit
conversions.
All kits come complete with:
• Digital solid-state trip unit with quick disconnect
• Direct-acting flux shifter with automatic reset
• Epoxy encapsulated high-accuracy current transformers
• Specially designed mounting hardware and wire harnesses
with communications cable for each breaker frame
• Detailed instruction manual
• Interchangeable rating plug (order separately)

For details on other MicroVersaTrip Plus and MicroVersaTrip PM
conversion kits, ask your ED&C sales engineer for these publications:

DET-067B MicroVersaTrip Plus & MicroVersaTrip PM Conversion
Kits for I-T-E Power Circuit Breakers
DET-093B MicroVersaTrip Plus & MicroVersaTrip PM Conversion
Kits for Westinghouse Power Circuit Breakers
DET-226 MicroVersaTrip Plus & MicroVersaTrip PM Conversion
Kits for Allis Chalmers Power Circuit Breakers
DEE-019 GE POWER LEADER™ Product Information
DEP-041 MicroVersaTrip Plus & MicroVersaTrip PM Remote
Display
DEP-056A PMCS Auxiliary Panel Components - Pricing &
Selection Guide
GEP-1100 GE Buylog
(Reference for Power Management Components)

GE Industrial Systems

DET-066B 1198 BL

General Electric Company
41 Woodford Avenue, Plainville, CT 06062
www.ge.com/edc
© 1998 General Electric Company



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Linearized                      : No
Create Date                     : 1998:11:25 15:15:58
Producer                        : Acrobat Distiller 3.0 for Power Macintosh
Creator                         : QuarkXPress  4.04: LaserWriter 8 8.5.1
Author                          : 
Title                           : GE CK Fact Sheet
Modify Date                     : 1998:11:25 15:23:11
Page Count                      : 6

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