Siemens 5SY4310-8 Industrial Miniature Circuit Breaker

Siemens 5SY4310-8 is a three-pole SENTRON miniature circuit breaker designed to protect three-phase distribution circuits in industrial control panels. It is rated for 10 A at up to 400 V AC, and uses a Type D tripping characteristic for targeted response to overcurrent and moderate inrush events. The device, with a short-circuit breaking capacity up to 10 kA at 400 V AC, provides reliable protection in demanding environments. Its molded-case construction and mounting depth of 70 mm support compact panel integration and straightforward replacement in existing 5SY/ITE installations. As part of Siemens' SENTRON protection family, 5SY4310-8 is commonly used to protect three-phase feeders and motors in industrial control panels and distribution boards across manufacturing and process facilities.