Siemens 5SY63 C10 Three-Phase Circuit Breaker

The Siemens 5SY6310-7 is a three-pole miniature circuit breaker (MCB) in the 5SY63 family, rated for 400 V AC and 10 A, with a C-type trip characteristic and a short-circuit breaking capacity of 6 kA, all housed in a 70 mm deep enclosure suitable for mounting in standard distribution boards. As a 3P device, it provides overload and short-circuit protection for three-phase distribution panels in commercial and light-industrial installations, where reliable phase-to-phase protection is required to prevent equipment damage and electrical fires. Key specifications include 400 V AC rated voltage, 10 A nominal current, C-type curve, 6 kA short-circuit breaking capacity, three poles, and D=70 mm depth, with a compact form factor that helps conserve panel space while maintaining robust protection for branch circuits. This model corresponds to the 5SY6310-7 code used by Siemens in their Industry Mall listings and product catalog, confirming its three-pole design and C-type operation for 10 A circuits in 400 V systems.