
Siemens 3RV2021-4CA10
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The Siemens 3RV2021-4CA10 is a size S0 circuit breaker for motor protection, designed for reliable protection of three-phase motors and feeder circuits in industrial control panels and machinery. This motor protection circuit breaker features a CLASS 10 tripping characteristic, an adjustable thermal overload setting from 16 to 22 A and a short-circuit release of 286 A. With screw terminals and standard switching capacity, it provides a dependable connection and straightforward integration in new installations and retrofit projects.
Thanks to its compact design, robust Siemens build quality and proven performance, the 3RV2021-4CA10 is well suited for panel builders, OEMs and maintenance professionals who require consistent motor protection and operational continuity. This Siemens circuit breaker is a practical choice for electrical distribution, motor starter combinations and industrial automation applications where safety, serviceability and long-term reliability are essential.