ABB SU203ML-K63 - ABB's UL UL 489 series of miniature circuit breakers provide a compact solution for branch circuit protection needs. These current-limiting breakers are DIN rail mounted and come with up to three trip curves for maximum circuit protection. They hold a variety of global certifications (UL, CSA, IEC, CE) and feature UL current limiting, fast breaking times, a bus connection system, a broad range of accessories, variable depth handle options, CE certification, DIN rail mounting, finger-safe terminals, multi-function terminals, and suitability for reverse feed (excluding S200UDC). They are UL UL 489 listed as branch circuit protective devices with UL File #E212323 and E312425.