ABB R5220300R1 Relay Module is a BBC Brown Boveri relay driver logic card used to interface control signals with ABB relay outputs in industrial automation systems. In some references it is listed as GHR5220300R1, indicating an alternate designation within ABB’s legacy line of relay driver modules. The device belongs to ABB’s historic catalog of relay driver components and is designed to integrate with other ABB equipment to translate control logic into relay actuation within configured ABB control architectures.
