Siemens 3RV1031-4GA10 Manual Starter

Siemens 3RV1031-4GA10 is a three-pole Sirius motor-protection circuit-breaker with integrated manual starter function, designed for 36–45 A motor circuits in frame size S2. It combines Class 10 overload protection with a N-release mechanism rated at 585 A and an auxiliary switch, and uses screw terminals for secure panel connections. The device offers front IP20 protection, about 20 W of total power loss in typical operation, and a surge-withstand rating of 6,000 V, with a mechanical life of roughly 50,000 switching cycles and installation up to 2,000 meters above sea level. This motor protector is intended for compact, panel-mounted protection and control of three-phase motors, delivering reliable overload protection alongside a manual start/stop function for straightforward local control and integration with motor-control circuits. The unit belongs to Siemens' Sirius family, frame size S2, and includes the standard N-release features that support predictable trip behavior in demanding environments.