ABB RER 103 Reliable MM Bus Connection Module for REF Series Fast Ethernet Edge Switch With a compact footprint and

With a compact footprint and robust thermal tolerance

TÜV CENELEC Railway Applications: EN 50126: 1999 up to SIL 4

With a 10 MHz clock speed and 128 KB RAM

ensuring accurate and reliable signal transmission for control systems

offering reliable performance in industrial automation systems

ABB RER 103 Reliable MM Bus Connection Module for REF Series Fast Ethernet Edge Switch With a compact footprint andOverview The ABB RER 103 is a robust bus communication module designed for medium voltage protection and control systems. It enables data exchange between Intelligent Electronic Devices (IEDs) and higher level automation systems through fiber optic communication, ensuring high immunity to electromagnetic interference and excellent electrical isolation. Designed for seamless integration with ABBs REF, REM, and RET protection relay families, the RER 103