Three-phase relay-GRT508FA3B-90A


-90A three sets of contacts switching capability.
-Apply to State Grid three-phase meter
-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: (98 x 41 x 36)mm

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Three-phase relay-GRT508FA3B-90A Details

Contact Data

Contact Form 3B
Contact Material AgSnO₂
Contact Resistance Max. 1.0mΩ (1A 6VDC)
Rated Load(Resistive) 90A 250VAC
Max. Switching Voltage 380VAC
Max. Switching Current 90A
Max. Switching Power 22500VAC
Service Life Mechnical Endurance 1x105 OPS
Electrical Endurance 6x10OPS
Max. Short-circuit Current 2500A/10ms
4500A/10ms (no explosion)




Operate Time 40ms Max.
Release Time 40ms Max.
Insulation Resistance (500VDC) 1000MΩ Min.
Dielectric Strength (50/60hz,1 min) Contact to Coil 4000VAC
Across Open Contacts 2000VAC
Contact to contact 4000VAC
Surge Voltage (1 .2/50 μ s) Contact to Coil 20KVAC
Creepage Distance 8mm
Unit Weight About 245g


Environmental Data


Ambient Temperature -40℃一+70℃ 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 27 13.5/13.5 3.0 6.0 ≤6.3 ≤6.3 13.5 ≥100
□9 48 24/24 ≤8.4 ≤8.4 18
□12 192 96/96 ≤16.8 ≤16.8 36
□24 768 384/384 ≤33.6 ≤33.6 72

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