ABB RER103 Product Details
What is the ABB RER103?
The ABB RER103 is a bus connection module for connecting ABB RE_500 series protection relays. It acts as an interface unit to connect RE_500 devices to fiber optic SPA, LON® and IEC 60870-5-103 buses. In simple terms, the RER103 is like a translator, converting the language (protocol) of the RE_500 device into a language that other devices can understand, thereby enabling communication between different devices.

Main functions of the RER103
Protocol conversion: The RER103 converts IEC_103 bus signals to electrical RS-485 signals and vice versa so that the RE_500 device can communicate with other systems.
Interface connection: Provides a physical interface to connect the RE_500 device to different bus systems.
Signal isolation: Provides electrical isolation to protect the device from interference.

Composition of RER103
RER103 mainly consists of a printed circuit board and is encapsulated in a plastic housing.

Application scenarios of RER103
Power system protection: RER103 is often used in power systems to connect protection relays with SCADA systems or other monitoring systems to achieve remote monitoring and control of power systems.
Industrial automation: In industrial automation systems, RER103 can be used to connect different automation equipment to achieve data exchange and control.