Motor Protection Circuit Breakers
Choose the frame and motor-current range, then add auxiliary switches, busbars, trip releases and operating handles.

Product specification
3RV2021-4BA10
SIRIUS S0 motor protection circuit breaker, 13–20 A adjustable thermal setting, class 10, screw terminals.
Dimensions & specifications
Choose the setting range to suit the motor nameplate current.
Accessories & related parts
Part numbers & documents
- 3RV2021-4BA10 SIRIUS S0 motor protection circuit breaker, 13–20 A adjustable thermal setting, class 10, screw terminals.
- 3RV2021-4CA10 SIRIUS S0 motor protection circuit breaker, 16–22 A adjustable thermal setting, class 10, screw terminals.
- 3RV2021-4DA10 SIRIUS S0 motor protection circuit breaker, 18–25 A adjustable thermal setting, class 10, screw terminals.
- 3RV2021-4NA10 SIRIUS S0 motor protection circuit breaker, 23–28 A adjustable thermal setting, class 10, screw terminals.
- 3RV2021-4EA10 SIRIUS S0 motor protection circuit breaker, 27–32 A adjustable thermal setting, class 10, screw terminals.
- 3RV2021-4PA10 SIRIUS S0 motor protection circuit breaker, 30–36 A adjustable thermal setting, class 10, screw terminals.
- 3RV2021-4FA10 SIRIUS S0 motor protection circuit breaker, 34–40 A adjustable thermal setting, class 10, screw terminals.
