ABB S281K4A Low Voltage Molded Case Circuit Breaker

ABB S281K4A is a compact, single-pole molded‑case circuit breaker (MCCB) designed for low‑voltage protection in electrical panels and control cabinets. It is rated for 4 A and 480 V, delivering reliable overcurrent protection for small branch circuits and equipment by quickly interrupting current during overload or short‑circuit events. The S281K4A part number denotes a 1-pole, 4-amp device within ABB’s molded‑case protection family, offering a straightforward solution for protecting control circuits, lighting feeders, and other low-current loads in commercial and light-industrial installations. This ABB MCCB provides clear, predictable performance in standard low-voltage electrical distributions.