ABB SU202M-K5A Two-Pole Miniature Circuit Breaker

ABB SU202M-K5 is a 2-pole miniature circuit breaker from ABB’s SU200M family, designed for DIN-rail mounting in control panels and industrial enclosures. This Type K curve device is rated 5 A per pole and provides a 10 kA short-circuit breaking capacity per pole, making it suitable for protecting small- to mid-power circuits against overloads and faults. It accepts voltages up to 480Y/277 VAC and 48/96 VDC, enabling use in mixed AC/DC applications common in equipment and machine controls. The unit is UL489-listed and intended for environments from -25°C to 55°C. Physically, it measures about 69 mm long, 35 mm wide, and 111 mm high, and weighs roughly 0.28 kg, reflecting a compact, modular form factor that fits standard DIN-rail panels. As part of ABB’s System Pro M Compact range, the SU202M-K5 provides reliable thermal-magnetic protection for two-conductor circuits, ensuring both poles can be interrupted simultaneously in the event of a fault. Typical applications include distribution panels, motor control centers, and automation control cabinets where a precise 5 A protective device is required to guard wiring and components without nuisance tripping.