ABB S502-K2,1 Circuit Breaker

ABB S502-K2.1 is a 2-pole high‑performance miniature circuit breaker from ABB’s S500‑K family. It is rated for 2.1 A with a thermal‑magnetic trip curve K and an interrupt rating of 30 kA, making it suitable for protecting small motors, control circuits, and distribution lines in industrial panels. The device supports voltages up to 277Y/600 VAC (UL 1077) and up to 690 VAC (IEC), enabling use in both North American and international electrical systems. This DIN rail‑mounted unit features finger‑safe, multi‑function terminals for flexible wiring and straightforward installation. As a two‑pole protective device, it provides simultaneous interruption on both live conductors, and it is compatible with ABB S500‑K accessories such as undervoltage releases and shunt trips for enhanced protection in coordinated protection schemes.