ABB ST201M-K4NA

The ABB ST201M-K4NA is a compact miniature circuit breaker designed for single-pole applications with a 4-amp rating. Built to handle voltages up to 480Y/277V AC, this breaker features a K-curve tripping characteristic and offers a breaking capacity of 10 kAIC, making it a reliable choice for protecting supplemental circuits. Part of the ST200M series, it includes a neutral connection and meets UL 1077 and CSA 22.2 safety standards. Distributed by BSP Automation, this breaker is a solid pick for anyone needing dependable circuit protection in a smaller footprint—perfect for those who want something robust yet unassuming, or as some people might say, a real "workhorse" in its class.