ABB ST201M-K3

The ABB ST201M-K3 is a compact, one-pole miniature circuit breaker designed to handle 3 amps with a voltage rating of 480Y/277V AC. Featuring a K-curve trip characteristic, this breaker is built to protect electrical circuits with a 10 kA interrupting capacity, making it a reliable choice for supplemental protection in various applications. Part of the ST200M series, it meets UL 1077 and CSA 22.2 standards, ensuring robust performance and safety. Distributed by BSP Automation, this breaker—sometimes called the ST201M-K3 or catalog number 016779017682—is a solid pick when you need trustworthy circuit protection without any fuss.