ABB ST203M-K2 Three Phase Soft Starter Module For Industrial Applications

ABB ST203M-K2 is a three-pole miniature circuit breaker (MCB) with a 2 A rated current, designed to protect three‑phase circuits in industrial control panels and distribution boards. It is specified for 480Y/277V AC operation and uses a Type K (K‑curve) trip characteristic, which provides precise protection for circuit loads in commercial and industrial electrical installations. This UL 1077 listed device offers a 10 kA interrupting capacity (10 kAIC) and is compatible with standard DIN rail mounting for compact, modular installations in electrical cabinets. Ideal for protecting three‑phase motor circuits and other industrial equipment in robust distribution schemes, the ST203M-K2 delivers reliable overcurrent protection while enabling straightforward fault isolation in multi‑pole systems.