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RFT Interface Relay
RFT Interface Relay

RFT Interface Relay


The RFT interface relay is a slim, compact relay with a non-polar LED integrated in the relay. It features one electrode that can handle 12 amps and two electrodes that can handle 8 amps, making it ideal for use in a variety of applications. Additionally, it has a lockable test button and inspection window to identify coils by test button color (AC red/DC blue).

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RFT Interface Relay Details

  • With a slim and compact size.
  • Available for 1 pole handling 12 A and 2 poles handling 8A.
  • With non-polarity LED integrated into the relay.
  • Equipped with a lockable test button and inspection window.
  • Identify coil by test button color.
  • Conformity with RoHs Directive.

RFT Interface Relay

An RFT interface relay consists of a relay and a socket. The control voltage range can be extended using matching sockets. It can be used with the following types of sockets: SRT05/08-A RFT socket, SRT05/08-E RFT socket, SRT05/08-ES RFT socket, SRU05/08-E RFT socket, and SRU05/08-ST RFT socket. Its terminal device is of the Plug-In type.

RFT Interface Relay Characteristics

Initial contact resistance≤50mΩ

Contact Configuration 1C 2C
Load Resistance 12A/ 250VAC, 30VDC 8A/ 250VAC, 30VDC
Motor load 1/3HP, 240VAC 1/6HP, 240VAC
Max. switching capacity (resistive) 3000VA, 360W 2000VA, 240W
Min. switching capacity 170mW(17V/10mA)
Initial contact resistance ≤50mΩ
Material Ag alloy
Electrical durability (110% rated voltage, 55ºC) ≥20 x 104 (1800 Ops/h)
Electrical durability (Normal temperature) ≥30 x 104 (600 Ops/h)
Mechanical durability ≥2000 x 104 (18000 Ops/h)
Pick-up voltage (23℃) (Rated voltage) DC:≤75% ,AC:80% 50/60Hz
Drop-out voltage (23℃) (Rated voltage) DC:≥10% ,AC:30% 50/60Hz
Maximum voltage (23℃)(Rated voltage) 110%
Insulation resistance ≥1000MΩ (500VDC)
Coil operating power DC (W) approx. 0.53
AC (VA) approx. 1.0
Operate time (at nominal voltage) ≤20ms
Release time (at nominal voltage) ≤10ms
Initial breakdown voltage Between open contacts 1000VAC/1min (leakage current 1mA)
Between poles 3000VAC/1min (leakage current 1mA)
Between contacts and coil 5000VAC/1min (leakage current 1mA)
Insulation characteristics
IEC 60664 UL840
Rated voltage 250VAC
Pollution level 3
Overvoltage level III
Impulse withstand voltage (waveform: 1.2/50us) 4000V
Protection level IP50
Storage temperature/ humbidity 55~+85℃/5%~68%RH(18months)
Working temperature/ humbidity -40~+55℃/5%~85%RH((No condensation)
Air pressure 86~106KPa
Shock resistance 10G (half-sine shock pulse: 11ms)
Vibration resistance 10~55Hz double-amplitude:1.0mm
Mounting Plug in
Unit weight Approx. 18g

Coil Specifications (23℃)

Nominal voltage V.DC 6 12 24 48 110 /
Coil resistance Ω 68 270 1100 4300 22800 /
Nominal voltage V.AC 6 12 24 48 115 230
Coil resistance Ω 16 63 240 1085 6300 23000
Remarks: Coil resistances under coil voltage 110V are measured with a tolerance of ±10%Ω, above 110V with a tolerance of ±15%Ω.

Contact Specification

RFT Interface Relay Dimensions (mm)

RFT Interface Relay Dimensions

Wiring Diagrams

RFT Interface Relay Wiring Digram

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Applicable socket

SRU05-E & SRU08-E RFT Socket

SRU05-E & SRU08-E RFT Socket

SRU05-E & SRU08-E RFT sockets allow users to connec...

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SRU05-ST & SRU08-ST RFT Socket

SRU05-ST & SRU08-ST RFT Socket

The SRU05-ST and SRU08-ST relay sockets are used to...

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