Siemens Aktiengesellschaft 3RV1021-0CA10 Circuit Breaker

Siemens 3RV1021-0CA10 is a Sirius 3RV1 motor protector/circuit breaker designed for compact motor protection in low-voltage circuits. This size S0 device provides a nominal current range of 0.18 to 0.25 A (FLA adjustment range 0.18–0.25 A) and a Class 10 trip characteristic, enabling rapid response to overloads while supporting reliable motor starts. It carries a short-circuit current rating of 100 kA at 400 V and uses screw terminals for straightforward wiring. The unit is delivered without an auxiliary switch, aligning with standard motor-protector configurations within the Siemens SIRIUS family. Intended for motor protection in control panels and associated drive circuits, the 3RV1021-0CA10 integrates thermal overload protection with short-circuit protection in a compact form and can be coordinated with compatible contactors to form a complete motor-start protection package.