Siemens 3RV1011-1JA15 Motor Protection Circuit Breaker

Siemens 3RV1011-1JA15 is a three-pole motor protection circuit breaker (S00 size) from the SIRIUS family, designed to protect small- to mid-size motors in industrial control panels while providing a built-in disconnect with signaling capability. It pairs thermal overload protection (A-release) adjustable in the 7–10 A range with instantaneous magnetic protection (N-release) rated at 130 A, and it includes a transverse auxiliary switch configuration of 1 normally open and 1 normally closed contact for status signaling and interlocking. The device is rated for up to 690 V AC, with a 400 V AC-3 rating for motor-load switching and a nominal current of 10 A in AC-3 service, making it suitable for motor circuits that run continuously in a demanding industrial environment. Main circuit comprises 3 poles, and the unit offers DIN rail mounting for easy panel integration, along with NO+NC auxiliary contacts to support control logic and feedback. The Siemens 3RV1011-1JA15 is a purpose-built MPCB that combines overload and short-circuit protection with integrated signaling, commonly deployed on drives and motors such as pumps, fans, and conveyors where compact protection and simple wiring are essential.