Motor protection breaker, 0.16 A, Class 10 — the small-current end of the SIRIUS line
The Siemens 3RV1011-0AA20 is a SIRIUS motor protection circuit breaker rated for 0.16 A continuous current, Trip Class 10, with a 100 kA breaking capacity across 240 V to 690 V AC. That 0.16 A rating puts it at the low-current edge of the 3RV1 family — sized for fractional-horsepower motors, small pumps, or fan drives where a standard 0.4 A breaker would be too coarse to protect the winding.
Width is 45 mm — one standard module — and depth is 81 mm, so it fits a standard distribution board without protruding past the front cover. Spring-loaded terminals on both main and auxiliary circuits accept 2x (0.25 to 2.5 mm²) solid or 2x (0.25 to 1.5 mm²) finely stranded with ferrule.
Rated short-circuit breaking capacity is 100 kA at 240 V, 400 V, 500 V, and 690 V AC. That is a single uniform figure across the voltage range — unusual for a breaker this small, and it simplifies coordination studies: you do not need to recalculate SCCR for different supply voltages.