Siemens 3RV2031-4DA10 Motor Protection Circuit Breaker

Siemens 3RV2031-4DA10 is a SIRIUS 3RV2 motor-protection circuit breaker, size S2, designed to protect three-phase motors in control panels from overload and short-circuit. It uses an adjustable thermal overload release (A-release) with a class 10 rating, settable in the range of 18 to 25 A, and a magnetic short-circuit release rated to 325 A for rapid fault isolation. This three-pole device uses screw-terminal wiring and delivers standard switching capacity consistent with the Sirius 3RV2 motor-protection family. The 3RV2031-4DA10 is intended for motor protection in industrial electrical panels, safeguarding three-phase motors from overload conditions and faults. From Siemens’ data, this model exhibits a typical power loss around 12 W and supports surge-voltage resistance up to 6 kV, with front IP20 protection. As part of the Sirius 3RV2 line, it provides reliable isolation of the motor circuit and is a compact solution for integrating motor protection with upstream protection and control in modern automation architectures.