Siemens 3RV2021-1FA10 is a three-pole manual motor protector (motor protection circuit breaker) with an adjustable overload setting from 3.5 to 5 A (A‑release) and a 65 A N‑release, Class 10. It uses screw-terminal connections and provides standard switching capacity for protecting 3‑phase motors in electrical control circuits. Designed to interrupt current on overload or fault conditions, this device is intended for use ahead of motor starters or drives in three‑phase motor protection applications.
