Siemens AG 3RV2031-4WA10 Sirius Circuit Breaker

Siemens Sirius 3RV2031-4WA10 is a three-pole motor-protection circuit breaker (size S2) from the SIRIUS 3RV2 family, designed to protect industrial motors against overload and short circuits in 690 V AC systems. It provides thermal-magnetic overload protection with a class 10 release and a current setting range of 42 to 52 A, making it suitable for small to medium motors in control panels and motor starters. The device uses screw-terminal connections for secure wiring and is intended for motor feeders where reliable tripping on fault conditions is required while preserving selective protection in multicircuit panels. Typical applications include pumps, fans, conveyors, and other three-phase motor drives in manufacturing and process environments. This model is configured for motor protection with three poles, combining compact size with Siemens’ standard SIRIUS protection capabilities for industrial electrical installations.