The ABB RER620, also cataloged as the RER620 Recloser Protection Relay, operates as a dedicated hardware component for the protection, control, measurement, and supervision of utility distribution feeders and industrial power systems. A member of ABB’s Relion product family, this device executes automated recloser logic for overhead lines and cable feeders in both grounded and ungrounded distribution networks. It converts physical voltage and analog current inputs into digital telemetry to manage instantaneous overcurrent, negative sequence faults, and embedded loop restoration sequences.
Profinet / EtherNet/IP Deterministic Networks and I/O Density Scaling
The RER620 supports native integration into non-proprietary IEC 61850 communication networks, leveraging high-speed GOOSE messaging to meet deterministic networks performance criteria. This connectivity allows the relay to stream digital waveform recordings and sequence of events (SOE) data without degrading backplane bus communication velocity during system-wide faults. The scalable hardware framework facilitates customized binary input/output scaling, enabling engineers to reconfigure applications as a recloser, sectionalizer, or automated switch via the PCM600 Application Configuration Tool (ACT) without localized hardware rewiring.
