The Siemens SIRIUS 3RV1011-1BA20 is a motor protection circuit breaker rated for 2 A continuous current with a CLASS 10 trip characteristic. It's sized for a 0.75 kW motor at 400 V AC, and its 100 kA breaking capacity at 400 V AC means it can handle high-fault-current panels without cascading upstream — critical for SCCR compliance on a machine feeder. Phase failure detection is built in, ground fault detection is not — so it guards against single-phasing on a motor but won't catch a leakage-to-ground without an add-on module. Screw and snap-on mounting to 35 mm DIN rail per EN 50022, any mounting position, so it drops into a standard panel footprint without layout changes.
Spring-loaded terminals for both main and auxiliary circuits — accepts 2x (0.25... 2.5 mm²) solid or 2x (0.25... 1.5 mm²) finely stranded with ferrule. No backwards or side clearance needed (0 mm gap), so it rows tight on the rail. Auxiliary switch extension possible if you need remote status feedback.