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FTR-K1 SERIES

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SPECIFICATION

Item

FTR-K3

FTR-K3-LS

FTR-K3-HC

Contact Data Configuration

1 form A

Construction

Single

Material

Silver alloy

Resistance (initial)

Max.100mΩat1A,6VDC

Contact rating (resistive)

20A, 250VAC

20A, 250VAC

25A, 250VAC

Max. carrying current

25A

Max. switching current *¹

25A

Max. switching voltage

250VAC

Max. switching power

6,250VA

Min. switching load *²

100 mA, 5VDC

Life

Mechanical

Electrical

Resistive load

Motor load

operations

(250VAC

inrush 80A

cos

φ=0.7

cut off 20A

cos

φ=0.9)

operations

(250VAC

inrush 80A

cos

φ=0.7

cut off 20A

cos

φ=0.9)

operations

(250VAC

inrush 80A

cos

φ=0.7

cut off 25A

cos

φ=0.9)

Inverter load

100VAC, inrush 200A / cut off 20A

Coil Data

Rated power (at 20 °C)

780 mW

Operate power (at 20 °C)

380 mW

Operating temperature range

-40 °C to +60 °C (no frost)

Timing Data

Operate (at nominal voltage)

Max. 20ms (without bounce)

Release (at nominal voltage)

Max. 10ms (no diode, without bounce)

Insulation

Resistance

Min.1,000MΩat500VDC

Dielectric strength

Open contacts

1,000VAC (50/60Hz) 1min

Contacts to coil

5,000VAC (50/60Hz) 1min

Surge strength

Coil to contacts

8,500V / 1.2 x 50µs standard wave

Clearance/creepage distance

6.4mm / 9.5mm

8.0mm / 9.5mm

6.4mm / 9.5mm

Other

Vibration resistance

Misoperation

10 to 55Hz double amplitude 1.5 mm

Endurance

10 to 55Hz double amplitude 1.5 mm

Shock

Misoperation

Min. 200m/s² (11 ± 1ms)

Endurance

Min. 1,000m/s² (6 ± 1ms)

Weight

Approximately 25 g

Sealing

Flux proof, RTII

* 1 Need to consider the heat from PCB when max. current is more than 10A

*2Minimumswitchingloadsmentionedabovearereferencevalues.Pleaseperformtheconfirmationtestwithactual

load before production since reference values may vary according to switching frequencies, environmental conditions

and expected reliability levels.

FTR-K3 SERIES