Siemens Industry, Inc. 3RV1031-4DA15 Circuit Breaker

3RV1031-4DA15 is a Siemens Sirius motor-protection circuit breaker, size S2, designed to guard motors in electrical panels and motor-control circuits. It provides an A-release current setting adjustable from 18 to 25 A, and a fixed N-release for short-circuit protection up to 325 A, enabling precise overload protection and fast fault isolation in motor circuits. The device includes a 1 normally open and 1 normally closed transverse auxiliary contact for signaling or interlocking, wired through transverse screw terminals to simplify control wiring. This 3RV2 family member offers standard switching capacity for motor protection duties and is commonly used to protect motors in pumps, fans, conveyors, and other automation equipment. Its combination of adjustable overload protection, a defined short-circuit release, and an auxiliary contact supports reliable, maintainable motor protection schemes and straightforward replacement in retrofits or expansions.