REF620 DIS0010 ABB Feeder Protection & Control Unit BBC High-Resolution A/D Conversion: Equipped with

High-Resolution A/D Conversion: Equipped with high-resolution A/D conversion

enabling reliable control and monitoring in industrial and substation environments

The following specifications ensure that the module fits seamlessly and integrates properly with the existing chassis and backplane infrastructure

A: It features a 15-inch TFT screen with 1024 × 768 pixel resolution

Q1: Is the 57C331A chassis still actively manufactured

REF620 DIS0010 ABB Feeder Protection & Control Unit BBC High-Resolution A/D Conversion: Equipped withOverview The ABB REF620 is a compact feeder management relay designed to protect and control incoming and outgoing feeders in mediumvoltage substations. It combines overcurrent, earthfault, and advanced protection functions with breaker control, monitoring, and communication capabilities. As part of the Relion family, the REF620 is optimized for IEC 61850 digital substations, offering scalable functionality and easy integration into modern grid