ABB SU201M-K40 is a 1P (single-pole) miniature circuit breaker (UL 489) with a 40 A rating and a 10 kA short-circuit breaking capacity, part of ABB's SU201M family. This K-curve, thermal-magnetic device provides overcurrent protection for AC circuits and is suitable for branch-circuit protection up to 480Y/277 VAC and 96 V DC, per ABB catalogs. UL 489 listed, it is designed for reliable protection in industrial and commercial electrical distributions, with typical applications in feeders, control panels, and machine circuits.
