Siemens 3RV2742-5FD10 System Protection Circuit Breaker

Siemens 3RV2742-5FD10 is a three-pole S3-size Sirius system protection circuit breaker designed for system protection in industrial equipment, often used in motor-control panels to protect feeders and control circuits, and it is part of Siemens' SIRIUS 3RV2 family of protection devices. It carries UL 489 and CSA C22.2 No.5-02 approvals, has a nominal current rating of 35 A and a short-circuit release rating of 455 A, and features screw-terminal connections for straightforward mounting. Rated for up to 400 V AC, the device combines thermal and magnetic trip elements (S3 size) to provide coordinated protection in plant installations, with screw-terminal mounting that supports straightforward wiring in compact control cabinets.