ABB SU203M-K32 Safety Relay

ABB SU203M-K32 is a 3-pole System pro M compact miniature circuit breaker (MCCB) rated for 32 A with a 10 kA breaking capacity under UL489, designed for branch-circuit protection in three-phase electrical installations. This K-characteristic device is part of ABB’s System pro M compact family and is keyed to the ordering code 2CDS273337R0537; the unit typically weighs about 0.375 kg per piece. The SU203M-K32 is UL489-listed and capable of guarding three‑phase networks up to 480Y/277 VAC, with applicability to DC configurations up to 96 V in appropriate setups. Commonly used to protect feeders, motors, and equipment in industrial and commercial panels, control cabinets, and distribution boards, it provides reliable overcurrent protection with a Type K trip characteristic suitable for balanced loads and moderate inrush scenarios within its rated 32 A capacity.