ABB ST202M-K3 Industrial Safety Relay Modules

ABB ST202M-K3 is a two-pole miniature circuit breaker in ABB’s System pro M compact ST200M family, designed to deliver reliable branch-circuit protection in industrial control panels and electrical enclosures. It is rated for a nominal current (In) of 3 A and uses a Type K thermal-magnetic trip characteristic to balance nuisance trips with solid fault protection, providing a short-circuit breaking capacity of 10 kA. As a 2P device, it protects two conductors simultaneously, making it suitable for 230/400 V circuits in compact DIN-rail installations within the ST200M lineup. The ST202M-K3 is commonly stocked by ABB-authorized distributors such as Proax, Newark, and Mouser, reflecting its role in system-wide protection across industrial environments. When selecting this breaker, ensure the current rating and trip curve match the protected load and that the installation complies with applicable local codes and ABB System pro M compact mounting standards.