Single-phase relay-GRT508B-90A


-90A contact switching capability.
-Only impulse excitation needed, both for single and double coil.
-Low power consumption, small in size.
-Custom assemblies available with flexible wire and/or copper straps, and/or with integrated shunt.
-4KV dielectric strength between coil and contacts
-RoHS compliant
-IEC62055-31 UC2 compliant
-Outline dimensions: (38.5 x 30 x 17.5/16.5)mm

E-mail :

Single-phase relay-GRT508B-90A Details

Contact Data


Contact Form 1B
Contact Material AgSnO₂
Contact Resistance Max. 1.0mΩ (1A 6VDC)
Rated Load(Resistive) 90A 250VAC
Max. Switching Voltage 250VAC
Max. Switching Current 90A
Max. Switching Power 22500VA
Service Life Mechnical Endurance 1x105 OPS
Electrical Endurance 1x10OPS
Max. Short-circuit Current 2500A/10ms
4500A/10ms (no explosion)




Operate Time 20ms Max.
Release Time 20ms Max.
Insulation Resistance (500VDC) 1000MΩ Min.
Dielectric Strength (50/60hz,1 min) Contact to Coil 4000VAC
Across Open Contacts 2000VAC
Contact to contact /
Surge Voltage (1 .2/50 μ s) Contact to Coil 12KVAC
Creepage Distance 8mm
Unit Weight About 50g


Environmental Data


Ambient Temperature -40℃一+85℃ Relative Humidity 5%-85% RH
Vibration 10-55Hz 1.5mm Shock 98m/s²


Coil Data (20℃)


Coil Voltage (VDC) Coil Resistance (Ω)±10% Coil Power (W) Operating Voltage (VDC) Releasing Voltage (VDC) Allowing Voltage (VDC) Pulse Duration (ms)
Single Double Single Double
□6 24 12/12 1.5 3.0 ≤4.2 ≤4.2 9 ≥50
□9 54 27/27 ≤6.3 ≤6.3 13.5
□12 96 48/48 ≤8.4 ≤8.4 18
□24 384 192/192 ≤16.8 ≤16.8 36

Leave a Message