ABB S203MR-K40 is a three-pole miniature circuit breaker (MCCB) from ABB’s System pro M compact family, delivering overcurrent protection for three-phase circuits with a 40 A rating and a Type K (K-curve) tripping characteristic. It offers a 10 kA short-circuit breaking capacity and uses ring-cable lug termination for secure wiring in control panels and industrial feeders. UL 1077-listed and designed for installation in commercial and industrial distribution boards, it protects feeders and motor circuits while maintaining wiring integrity and ease of maintenance.
