ABB ST203M-D40

The ABB ST203M-D40 is a compact 3-pole miniature circuit breaker designed to handle up to 40 amps with a voltage rating of 480Y/277V AC. This unit features a D-curve trip characteristic, making it well-suited for protecting circuits with high inrush currents, such as motors and transformers. It offers a breaking capacity of 10 kAIC, ensuring reliable performance under fault conditions. Part of the ST200M series, this breaker meets UL 1077 and CSA 22.2 standards, underscoring its safety and quality credentials. Distributed by BSP Automation, the ST203M-D40 is a solid choice when you need dependable circuit protection without any hassle.