
Siemens 3RV2021-4BA15
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The Siemens 3RV2021-4BA15 is a compact motor protection circuit breaker in size S0, designed for reliable protection and switching of three-phase motors in industrial installations. With a CLASS 10 overload release adjustable from 13 to 20 A and a short-circuit release of 260 A, this motor protection breaker helps protect drives, motor feeders and machinery against overload and short-circuit conditions.
Thanks to screw terminals, standard switching capacity and integrated transverse auxiliary contacts 1 NO + 1 NC, this Siemens circuit breaker supports efficient panel building and dependable control integration.
It is a practical choice for switchboards, machine building and OEM applications where compact dimensions, straightforward installation and consistent motor protection are essential.