The ABB S2C‑H02R (part number 10120503) is an auxiliary contact accessory designed for use with ABB S‑series miniature circuit breakers (MCBs) and residual current devices (RCDs). It provides additional contact switching for control, indication, or interlocking purposes. The accessory adds two auxiliary contacts that operate concurrently with the main breaker mechanism, allowing the circuit breaker’s ON/OFF/TRIP status to be remotely monitored or used in control logic. It mounts on the right side of the breaker and is ideal for integration into electrical distribution boards, automation systems, and control panels that require breaker status feedback.
