ABB SU201M-Z2 Miniature Circuit Breaker

ABB SU201M-Z2 is a 1-pole miniature circuit breaker with a Z-type trip curve and a 2 A rated current, designed for branch-circuit protection in electrical distribution panels. As part of the SU200M family, it provides magneto-thermal overcurrent protection for circuits up to 480Y/277 V AC and 96 V DC, and it is UL 489 listed for use in compliant installations. This single-pole device is intended for panel boards and control panels requiring compact, reliable protection for feeders and branch circuits, offering precise tripping characteristics to minimize nuisance trips while safeguarding downstream equipment. With its 2 A rating and Z-curve behavior, the SU201M-Z2 delivers fast instantaneous response to faults while maintaining coordination with upstream protections in ABB-based protection schemes. The SU201M-Z2 designation identifies a model specifically configured for 1P operation within ABB's miniature circuit breaker lineup, ensuring compatibility with established ABB protection strategies for commercial and light industrial applications.