Description

The ABB REF 610 is a feeder protection relay from ABB’s earlier Relion 600 series, providing overcurrent and earth fault protection with IDMT and definite time characteristics. It offers front-panel LED indication, event logging, and serial communication via IEC 60870-5-103. The REF 610 is used for MV distribution feeder protection in 11 kV and 33 kV switchgear.