The ABB S203M-C20 is a three-pole miniature circuit breaker (MCB) from the enhanced-performance S200M series (Moulded Case), part of the System Pro M compact S200 line. It represents a robust and reliable solution for protecting three-phase electrical circuits. This device features a rated current of 20 Amperes per pole and the widely used "C" type tripping characteristic. The defining feature of the S200M series is its superior 10 kA breaking capacity, providing a higher safety margin in installations with potentially higher fault currents compared to the standard 6 kA S200 series.