Siemens 3RV1742-5GD10 Molded Case Circuit Breaker

Siemens 3RV1742-5GD10 Molded Case Circuit Breaker is a 3-pole protection device (size S3) rated for 40 A at up to 600 V, intended for plant protection and control panels in industrial electrical systems. It carries UL 489 and CSA C22.2 No.5-02 approvals and features an A-release trip at 40 A and a N-release 520 A for short‑circuit protection, with screw terminals for straightforward wiring. As part of the SIRIUS 3RV1 family, this molded-case breaker offers standard switching capacity for system protection applications and a 6 kV impulse voltage rating. The enclosure provides IP20 front protection, and the unit is rated for operating temperatures from -20 to +70 °C and installation at elevations up to 2,000 m. This 3-pole device is commonly used to protect electrical circuits feeding motors, control gear, and other heavy loads in industrial panels, where a 40 A, 600 V protective device with UL/CSA approvals is required.