Fujitsu FTR K4 Series
User Manual: Fujitsu FTR-K4 Series Datasheet - Fujitsu United States
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1
FTR-K1 SERIES
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 ame 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 conguration 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
Preliminary
2
FTR-K1 SERIES
n SPECIFICATION
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’).
FTR-K4 SERIES
Item FTR-K4 type
Contact Data Conguration 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)
Life Mechanical 1 x 106 operations
Electrical 120A, 277VAC, 10 x 10³ operations.
(cosφ=1.0 : 5×10³ operations, cosφ=0.5 : 5×10³ operations)
Coil Data Rated power 2.4W
Operating temperature -40ºC to +85ºC (no frost)
Timing Data Set Max. 20ms (at nominal voltage, without bounce)
Reset Max. 20ms (at nominal voltage, without bounce)
Insulation 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 12.000V / 1.2 x 50 ms
Other Vibration resistance Misoperation 10 to 55 to 10Hz single amplitude 0.75mm
Endurance 10 to 55 to 10Hz single amplitude 0.75mm
Shock Misoperation Min. 500m/s² (11 ± 1ms)
Endurance Min. 1,000m/s² (6 ± 1ms)
Weight Approximately 70g
Preliminary
3
FTR-K1 SERIES
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.
FTR-K4 SERIES
n DIMENSIONS
l Dimensions
l Schematics
2 - 0.64 4.5 43
37
522.4
4
2
2
4
φ4.7
φ4.7
14.85
5.5 6.5 59.5 4.3
6.75
6.1
22
2
3
Reset (contact: OFF)
Set (contact: ON)
pin No.3(+)/pin No.2(-)
pin No.2(+)/pin No.3(-)
Preliminary
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FTR-K1 SERIES
FTR-K4 SERIES
1. General Information
l All relays produced by Fujitsu Components are compliant with RoHS directive 2011/65/EU including
amendments.
l Cadmium as used in electrical contacts is exempted from the RoHS directives.
As per Annex III of directive 2011/65/EU.
l 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
l 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.
RoHS Compliance and Lead Free Information
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.
Preliminary
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FTR-K1 SERIES
FTR-K4 SERIES
Fujitsu Components International Headquarter Ofces
©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 afliated 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 afliated 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 tness 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
Japan
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Korea
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13524 Korea
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Email: fcal@sg.fujitsu.com
www.fujitsu.com/sg/products/devices/components/
Preliminary
