The ABB ST203M-Z2 is a reliable miniature circuit breaker designed for three-pole protection with a 2-amp rating and a 480Y/277V AC voltage specification. Featuring a Z-curve trip characteristic, this breaker offers robust short-circuit protection up to 10 kAIC, making it a solid choice for supplemental protection needs in various industrial settings. Part of the ST200M series, it meets UL 1077 and CSA 22.2 safety standards, ensuring dependable performance. You might also see it referred to by its alternate code, 016779024185. Distributed by BSP Automation, this circuit breaker is a solid bit of kit for managing circuit safety without complicating your setup.