ABB RER 103 Reliable MM Bus Connection Module for REF Series Fast Ethernet Edge Switch With over a decade of

With over a decade of proven field performance

Modbus Port:

With a 10 MHz clock speed and 128 KB RAM

With a compact footprint and robust thermal tolerance

and monitoring devices

ABB RER 103 Reliable MM Bus Connection Module for REF Series Fast Ethernet Edge Switch With over a decade ofOverview 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