ABB SU203M-C6 Safety Relay Module

ABB SU203M-C6 is a three-pole miniature circuit breaker (MCCB) from ABB’s System pro M Compact family, designed to provide reliable overcurrent protection for 3‑phase power circuits in control panels, machine enclosures, and distribution boards. It carries a 6 A rated current and a C‑curve trip characteristic, which suits general-purpose protection with moderate inrush, and it can interrupt fault currents up to 10 kA (Icu 10 kA) under UL489. The device is identified by order number 2CDS273337R0064 and is built for consistency with ABB’s safety and protection hardware lineup, enabling straightforward integration with other System pro M Compact components. Typical applications include feeders and motor circuits in industrial automation, cabinet assemblies, and building service panels where compact 3P protection is required. As part of ABB’s System pro M Compact range, the SU203M-C6 shares common mounting, wiring schemes, and coordinated trip performance with neighboring modules, helping engineers simplify panel layouts and maintenance while meeting standard electrical protection requirements.