Siemens – 3RV1821-0BD10 – S0-Size Motor Protection / Circuit Breaker (3-Pole)

The Siemens 3RV1821-0BD10 is a compact molded-case circuit breaker in the SIRIUS “S0” frame size, designed for motor protection and control applications. It provides overload and short-circuit protection in one module for three-phase motors. The product is also certified under UL 489 and CSA C22.2 No.5-02 for North American use.