Siemens 3RV1031-4EA15 Motor Starter Protector

Siemens 3RV1031-4EA15 Motor Starter Protector is a three-pole Sirius 3RV1 motor protection circuit breaker (S2 size) with an integrated auxiliary contact (1 NO + 1 NC) and screw-terminal connections. It is rated for mains up to 690 V AC (AC-3) and provides a main current rating of 32 A with an overload release adjustable from 22 to 32 A. The device also includes a current-dependent release with a short-circuit protection level of 416 A, enabling rapid disconnection on fault conditions. This motor starter protector combines protection and switching in a single device, intended for motor control circuits in panels and enclosures and typically used with a separate contactor to form a complete motor starter. The integrated auxiliary contact offers feedback to control logic, allowing status monitoring and interlock functions, while the screw terminals simplify wiring in compact control cabinets. As part of Siemens' Sirius 3RV1 family, it serves as a compact, plug-in protection solution for three-phase motors requiring up to around 32 A and up to 690 V, complementing other low-voltage control components in standard motor control schemes.