Siemens 3RV2031-4VA10 Motor Protection Circuit Breaker

Siemens 3RV2031-4VA10 is a three-pole motor protection circuit breaker (MPCB) in the SIRIUS 3RV2 family, sized S2 for motor protection. This DIN-rail‑mountable device combines overload protection with a thermal release and short‑circuit protection in a compact enclosure, featuring a Class 10 thermal release with an adjustable overload setting of 35 to 45 A (A‑release) and a fixed N‑release rating up to 650 A, along with screw‑terminals for secure wiring and standard switching capacity. It is rated for up to 690 V AC and is intended for AC‑3 duty, making it suitable for protecting motors and their feeders against overloads and short circuits while allowing safe disconnection from the supply. As part of Siemens’ Sirius line, the 3RV2031-4VA10 specifies three poles in a size‑S2 form factor, delivering reliable motor protection with integrated overload and short‑circuit protection in a single, DIN‑rail mounted device.