Siemens 3RV2021-0EA10 Molded Case Circuit Breaker

Siemens 3RV2021-0EA10 is a SIRIUS motor protection circuit breaker (Molded Case Circuit Breaker) from the 3RV2 family, sized for S0 and designed for system protection without phase failure protection. It provides thermal (A-release) protection adjustable in the 0.28–0.40 A range and an instantaneous short-circuit release rated at 5.2 A, with screw-terminal connections for a secure, field-terminable install. Rated for up to 690 V AC, it supports standard switching capacity and is intended for motor protection in industrial electrical systems. The 3RV2 series combines protection and control in a compact package, delivering reliable, fast response to overload and short-circuit conditions in small to medium motor circuits.