The ABB ST201M-D2NA is a compact 1-pole miniature circuit breaker designed for protecting electrical circuits up to 2 amps at 480Y/277V AC. Featuring a D-curve trip characteristic and a 10 kA interrupting capacity, this breaker is part of the reliable ST200M series, ideal for supplemental circuit protection. It also includes a neutral connection, making installation straightforward. Distributed by BSP Automation, this unit is built to meet UL 1077 and CSA 22.2 safety standards, ensuring trustworthy performance in a variety of industrial settings. In the biz, some folks might call it a “mini breaker” or just “the ST201,” but either way, it’s a solid choice for your protection needs.