Siemens 3RV1742-5ED10 SIRIUS Circuit Breaker For System Protection

Siemens 3RV1742-5ED10 is a three-pole SIRIUS circuit breaker (size S3) designed for plant protection and UL 489/CSA C22.2 No.5-02 approval, featuring a screw-terminal connection. It is rated for up to 690 V AC and 30 A, with an A-release of 30 A and a short-circuit release (N-release) of 390 A, and it offers IP20 front protection along with a mechanical service life of about 50,000 switching cycles. Intended to protect feeders in electrical distribution panels and plant systems, this device supports installations up to 2,000 m above sea level and is aligned with the SIRIUS platform's standard system-protection performance.