Product Core Brief
- Model: REM620
- Brand: ABB
- Series: Relion® 620
- Core Function: Motor management relay for medium- and large-sized asynchronous and synchronous motors with differential protection
- Type: Motor Management Relay (IEC/ANSI)
- Key Specs: 48–250 VDC / 100–240 VAC auxiliary; IEC 61850 Ed 1 & 2, PRP/HSR, GOOSE, 9-2 LE; 12 RTD + 2 mA inputs; differential protection (87)
- Condition: New Original (New Surplus) — not refurbished
- Discontinued — limited stock: Verify exact variant (IEC vs ANSI) before ordering
Product Introduction
You’re protecting a 5 MW compressor motor that costs $150,000 to replace, and a single-phase fault can destroy it in seconds. The ABB REM620 is the motor management relay for medium- and large-sized asynchronous and synchronous motors requiring differential protection in manufacturing and process industries.
This relay handles protection during motor start-up and normal run, with fault clearance in abnormal conditions. It supports native IEC 61850 Editions 1 and 2, including HSR and PRP redundancy, GOOSE messaging, and IEC 61850-9-2 LE for reduced wiring. Extensive motor supervision via 12 RTD and 2 mA measurements, plus optional arc protection. The withdrawable-unit design with large graphical display shows interactive single-line diagrams.packages
