GRT508B RoHS compliant 90A Single-phase Relay

GRT508B RoHS compliant 90A Single-phase Relay


-90A contact switching capability.
-Only impulse excitation needed, both for single and double coil.
-Low power consumption with great load capability, 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
-Outline dimensions: (38.5 x 30 x 16.5)mm

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GRT508B RoHS compliant 90A Single-phase Relay 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 15000VA/2800W
Service Life Mechnical Endurance 1x105 OPS
Electrical Endurance 1x10OPS
Max. Short-circuit Current 2000A/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 36 18/18 1.0 2.0 ≤4.2 ≤4.2 9 ≥50
□9 81 40.5/40.5 ≤6.3 ≤6.3 13.5
□12 144 72/72 ≤8.4 ≤8.4 18
□24 576 288/288 ≤16.8 ≤16.8 36

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