ABB ST203M-K50

The ABB ST203M-K50 is a 3-pole miniature circuit breaker designed to handle up to 50 amps at 480Y/277V AC. Part of the ST200M series, this breaker features a K-curve trip characteristic, making it suitable for protecting circuits with moderate inrush currents. It offers a short-circuit rating of 10 kAIC, ensuring reliable interruption of fault currents. This compact yet robust device complies with UL 1077 and CSA 22.2 standards, providing dependable supplemental protection. Distributed by BSP Automation, the ST203M-K50 is a solid choice when you need a trustworthy circuit breaker that won’t let you down—perfect for keeping your system running smoothly without any hiccups.