ABB ST201M-B1

The ABB ST201M-B1 is a compact 1-pole miniature circuit breaker designed for reliable protection in low-current applications. Rated at 1 amp and suitable for 480Y/277V AC systems, this device features a B-curve trip characteristic, making it ideal for guarding circuits against short circuits and overloads with a 10 kA interrupting capacity. Part of the ST200M series, it meets safety standards such as UL 1077 and CSA 22.2, ensuring trusted performance in supplemental protection roles. Distributed by BSP Automation, the ST201M-B1 is a solid choice when you need a no-nonsense, dependable breaker that gets the job done right.