Siemens 5SY63-MCB-C10 Miniature Circuit Breaker

Siemens 5SY63-MCB-C10 is a three-pole miniature circuit breaker designed for 400 V AC three‑phase distribution. With a nominal current rating of 10 A and a Type C (C) tripping characteristic, it provides fast magnetic protection for moderate faults alongside thermal protection for overloads. This variant sits within the Siemens 5SY mini circuit-breaker family and is intended for use in compatible panels and other 3‑pole installations where compact, reliable overcurrent protection is required. The C10 designation identifies both the current rating and the curve type, differentiating it from higher‑amp variants within the 5SY63 range. Typical applications include protection of 3‑phase motors, pumps, compressors, fans, and lighting circuits in commercial and light‑industrial environments powered by 400 V systems, ensuring safe disconnection during fault or overload conditions while helping maintain service continuity for standard 3‑phase equipment.