ABB SU203M-C5 Industrial Motor Control Relay Module

ABB SU203M-C5 is a UL489-compliant three-pole miniature circuit breaker (C-curve) rated at 5 A, designed to provide branch-circuit protection in AC power installations. It delivers a 10 kA short-circuit breaking capacity and is suitable for nominal voltages up to 480Y/277V AC. The device occupies three modular units of width in standard panelboards, enabling compact installation alongside other protection devices in ABB's SU203M family. The SU203M-C5 is cataloged under ABB part number 2CDS273337R0054 in distributor listings and is documented in ABB's general catalogs as a UL489 protection device with a C-curve trip characteristic. Intended for use wherever UL489-compliant protection is required, it serves three-phase or single-phase feeders in commercial and industrial electrical distribution systems. This model provides reliable overload and short-circuit protection while conforming to North American standards.