ABB SU203M-C3 is a three-pole miniature circuit breaker (MCB) from ABB's SU200M family, designed for branch-circuit protection in low-voltage distributions and compatible with System pro M compact DIN-rail configurations; it protects circuits up to 480Y/277 VAC and 96 V DC per UL 489. It has a nominal current rating of 3 A and a type C (curve C) trip characteristic, suitable for moderate inrush on three-phase loads, and is UL 489 listed for use in compliant panels.
