Siemens 3RV2031-4VA10 Motor Protection Circuit Breaker

Siemens 3RV2031-4VA10 is a three‑pole S2 motor protection circuit breaker in the SIRIUS Innovation line, designed to protect motors in AC-3 duty while serving as a disconnect. Rated for up to 690 V AC across three phases, it features an adjustable overload (A‑curve) from 35 to 45 A and a fixed instantaneous release (N‑curve) at 650 A for rapid fault isolation. Built on a size S2 frame with screw-terminal connections, it supports standard switching within the 3RV2 family and is commonly mounted on a DIN rail in motor control panels. This device is intended for motor protection in applications such as conveyors, pumps, machine tools, and other three‑phase motor loads where reliable overload protection and swift short‑circuit trip are essential.