ABB S272K8A DIN Rail 2P Circuit Breaker 480V AC

ABB S272K8A is a DIN-rail mounted, two-pole miniature circuit breaker (MCB) rated for 8 A at up to 480 V AC, designed for single-phase service. The K8A variant interrupts both conductors in a 2-pole configuration to protect branch circuits against overloads and short circuits, making it suitable for small feeders in control panels and distribution enclosures. Its compact form factor and simple DIN-rail mounting streamline installation in standard panel assemblies. The S272K8A bears ABB’s reputation for protective devices and is identified by the S272 series designation, reflecting its role as a robust low-voltage protection component. With an 8 A rating, it is well-suited to protect modest-load branch circuits such as lighting, control circuits, or small equipment feeders operating at up to 480 V AC, providing simultaneous disconnection of both live conductors for safety during maintenance.