Siemens AG 3ZX1012-0RV02-1AA1 Circuit Breaker

Siemens Sirius 3ZX1012-0RV02-1AA1 is a motor-protection circuit breaker (MSP S0) in the SIRIUS 3RV1 family, designed to protect electrical motors in low-voltage panels by combining thermal overload and magnetic short-circuit protection in a compact, robust device. The 3ZX1012-0RV02-1AA1 designation identifies this unit as the 3RV1.2 MSP S0 variant, a Siemens protective device intended for panel-mount installation in motor circuits within industrial and commercial applications. As part of the Siemens SIRIUS portfolio, it is built to integrate with other SIRIUS protection components and control gear, supporting motor protection schemes within standard low-voltage distributions and aligning with Siemens accessory ecosystems for cohesive system design. Typical applications include safeguarding motors in pumps, fans, conveyors, and other small to mid-size drives where reliable protection and fast interruption of motor current are essential to reduce damage from overload or fault conditions. The MSP S0 variant emphasizes motor-protection performance in a compact form factor and is designed to meet Siemens’ trip characteristics for motor-protection devices, enabling selective protection when multiple protection elements share a feeder. Designed for DIN-rail mounting in control panels and built to endure typical industrial environments, this unit represents Siemens’ approach to integrated motor protection within the Sirius line, offering seamless compatibility with other 3RV1 components and a unified protection strategy for motor loads.