Siemens 3RV2021-1CA10 Motor Protection Circuit Breaker

Siemens Sirius 3RV2021-1CA10 is a three-pole motor protector circuit breaker (MPCB) in size S0, combining thermal overload protection with short-circuit protection for motor circuits. It provides Class 10 overload protection and is intended for AC-3 motor applications up to 690 V, featuring screw-terminal connections and no auxiliary contact. The device is rated for a motor current range of 1.8 to 2.5 A (full-load current) with a 33 A short-circuit release setting. This Sirius motor starter protector is designed for straightforward electrical protection of small industrial motors and is part of Siemens’ SIRIUS 3RV product family.