Fujitsu FTR K4 Series

User Manual: Fujitsu FTR-K4 Series Datasheet - Fujitsu United States

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FTR-K1 SERIES

Preliminary

POWER RELAY
120A Latching Relay

FTR-K4 Series
n FEATURES
•
•
•
•

Switching current : 120 A (1 form A)
Contact resistance : Max. 0.5 mΩ (Initial)
Compact size : 43.0 x 37.0 x 22.0 mm
Plastic materials conform to UL94 flame class V-0

n Applications
•
•
•

Static payment meters
Power conditioner
Water heater

n PARTNUMBER INFORMATION
[Example]

FTR-K4

P

B

012

W

-ST

(a)

(b)

(c)

(d)

(e)

(f)

(a)

Relay type

FTR-K4

: FTR-K4 Series

(b)

Contact configuration

P

: 1 form A

(c)

Coil type

B

: Single winding latching type

(d)

Coil voltage

012
024
048

: 12VDC
: 24VDC
: 48VDC

(e)

Contact material

W

: Silver alloy

(f)

Special type

ST

: Standard

Note: The designation name is stamped on the top of the relay case as follows:
Example: Ordering part number: FTR-K4PB012W-ST
Stamped on part number: K4PB012W-ST

1

FTR-K1
SERIES
FTR-K4
SERIES

Preliminary
n SPECIFICATION
Item
Contact Data

Life

Coil Data
Timing Data
Insulation

FTR-K4 type
Configuration

1 form A

Material

Silver alloy

Resistance (initial)

Max. 0.5 mW (at 1 A)

Contact gap

0.68mm

Max. switching current

120A

Max. switching power

33,240VA (Resistive load 120 A – 277VAC)

Max. switching voltage

440VAC

Fault current making capacity

3.000A (IEC62055-31, UC3)

Short-circuit current carrying
capacity

6.000A (IEC62055-31, UC3)

Mechanical

1 x 106 operations

Electrical

120A, 277VAC, 10 x 10³ operations.
(cosφ=1.0 : 5×10³ operations, cosφ=0.5 : 5×10³ operations)

Rated power

2.4W

Operating temperature

-40ºC to +85ºC (no frost)

Set

Max. 20ms (at nominal voltage, without bounce)

Reset

Max. 20ms (at nominal voltage, without bounce)

Contact gap (initial)

8mm

Resistance (at 500VDC)

Min. 1,000MΩ

Dielectric strength

Open contacts

2,000VAC, 1min

Contacts to coil

4,000VAC, 1min

Surge strength
Other

Vibration resistance
Shock
Weight

12.000V / 1.2 x 50 ms
Misoperation

10 to 55 to 10Hz single amplitude 0.75mm

Endurance

10 to 55 to 10Hz single amplitude 0.75mm

Misoperation

Min. 500m/s² (11 ± 1ms)

Endurance

Min. 1,000m/s² (6 ± 1ms)
Approximately 70g

Note:
Relays are shipped in a ‘set’ state. During shipping and handling, however, shocks may change the state to ‘reset’.
Consequently, at time of use (at power on) it is recommended to ensure that circuits are returned to desired state
(‘set’ or ‘reset’).

2

FTR-K1
SERIES
FTR-K4
SERIES

Preliminary
n COIL RATING
Model

Rated Coil
Voltage
(VDC)

Coil Resistance
+/- 10% (Ohm)

Must Operate
Voltage *
(VDC)

Must Release
Voltage *
(VDC)

FTR-K4PB012W

12

60

9.0

9.0

FTR-K4PB024W

24

240

18.0

18.0

FTR-K4PB048W

48

960

36.0

36.0

Note: All values in the table are valid for 20°C and zero contact current.

n DIMENSIONS
l Dimensions
4.5

43

2

4

4
2

22.4

37

5

2 - 0.64

φ4.7

5

14.8

5 6.7
6.1
22

φ4.7

5.5 6.5

59.5

4.3

l Schematics
Reset (contact: OFF)

2
3

pin No.3(+)/pin No.2(-)
Set (contact: ON)

pin No.2(+)/pin No.3(-)

3

Preliminary

FTR-K4
SERIES
FTR-K1
SERIES

RoHS Compliance and Lead Free Information
1. General Information
l

l

l

l

All relays produced by Fujitsu Components are compliant with RoHS directive 2011/65/EU including
amendments.
Cadmium as used in electrical contacts is exempted from the RoHS directives.
As per Annex III of directive 2011/65/EU.
All relays are lead-free. Please refer to Lead-Free Status Info for older date codes at:
http://www.fujitsu.com/downloads/MICRO/fcai/relays/lead-free-letter.pdf
Lead free solder plating on relay terminals is Sn-3.0Ag-0.5Cu, unless otherwise specified.
This material has been verified to be compatible with PbSn assembly process.

3. Moisture Sensitivity
l

Moisture Sensitivity Level standard is not applicable to electromechanical relays, unless otherwise indicated.

4. Tin Whiskers
l

Dipped SnAgCu solder is known as presenting a low risk to tin whisker development. No considerable length
whisker was found by our in house test.

4

FTR-K1SERIES
SERIES
FTR-K4

Preliminary
Fujitsu Components International Headquarter Offices
Japan
FUJITSU COMPONENT LIMITED
Shinagawa Seaside Park Tower 19F,
12-4, Higashi-shinagawa 4-chome, Shinagawa-ku,
Tokyo,140-0002, Japan
Tel: (81-3) 3450-1682
Fax: (81-3) 3474-2385
Email: fcl-contact@cs.jp.fujitsu.com
Web: www.fujitsu.com/jp/fcl/

Asia Pacific
FUJITSU COMPONENTS ASIA, LTD.
102E Pasir Panjang Road
#01-01 Citilink Warehouse Complex
Singapore 118529
Tel: (65) 6375-8560
Fax: (65) 6273-3021
Email: fcal@sg.fujitsu.com
Web: www.fujitsu.com/sg/products/devices/components

North and South America
FUJITSU COMPONENTS AMERICA, INC
2290 North First Street, Suite 212
San Jose, CA 95131, USA
Tel: (1-408) 745-4900
Fax: (1-408) 745-4970
Email: components@us.fujitsu.com
Web: us.fujitsu.com/components

China
FUJITSU ELECTRONIC COMPONENTS (SHANGHAI) CO., LTD.
Unit 4306, InterContinental Center
100 Yu Tong Road, Shanghai 200070,
China
Tel: (86-21) 3253 0998
Fax: (86-21) 3253 0997
Email: fcal@sg.fujitsu.com
Web: www.fujitsu.com/sg/products/devices/components

Europe
FUJITSU COMPONENTS EUROPE B.V.
Diamantlaan 25
2132 WV Hoofddorp
Netherlands
Tel: (31-23) 5560910
Fax: (31-23) 5560950
Email: info@fceu.fujitsu.com
Web: www.fujitsu.com/uk/components

Hong Kong
FUJITSU COMPONENTS HONG KONG CO., LTD
Unit 506, Inter-Continental Plaza
No.94 Granville Road, Tsim Sha Tsui, Kowloon,
Hong Kong
Tel: (852) 2881-8495
Tex: (852) 2894-9512
Email: fcal@sg.fujitsu.com
Web: www.fujitsu.com/sg/products/devices/components/

Korea
FUJITSU COMPONENTS KOREA LIMITED
Alpha Tower #403, 645 Sampyeong-dong,
Bundang-gu, Seongnam-si, Gyeonggi-do,
13524 Korea
Tel: (82) 31-708-7108
Fax: (82) 31-709-7108
Email: fcal@sg.fujitsu.com
www.fujitsu.com/sg/products/devices/components/

©2016 Fujitsu Components Europe B.V. All rights reserved. All trademarks or registered trademarks are the property of their respective owners.
The contents, data and information in this datasheet are provided by Fujitsu Component Ltd. as a service only to its user and only for general
information purposes.
The use of the contents, data and information provided in this datasheet is at the users’ own risk.
Fujitsu has assembled this datasheet with care and will endeavor to keep the contents, data and information correct, accurate, comprehensive,
complete and up to date.
Fujitsu Components Europe B.V. and affiliated companies do however not accept any responsibility or liability on their behalf, nor on behalf of its
employees, for any loss or damage, direct, indirect or consequential, with respect to this datasheet, its contents, data, and information and related
graphics and the correctness, reliability, accuracy, comprehensiveness, usefulness, availability and completeness thereof.
Nor do Fujitsu Components Europe B.V. and affiliated companies accept on their behalf, nor on behalf of its employees, any responsibility or liability
for any representation or warrant of any kind, express or implied, including warranties of any kind for merchantability or fitness for particular use,
with respect to these datasheets, its contents, data, information and related graphics and the correctness, reliability, accuracy, comprehensiveness,
usefulness, availability and completeness thereof. Rev. September 07th, 2016

5



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