The Siemens 3RV6011-0AA15 is a SIRIUS motor protection circuit breaker in Size S00, rated at 0.16 A operational current with a CLASS 10 trip characteristic. That 0.16 A figure is the full-load motor current it's designed to protect — not a frame rating. The thermal overload release handles sustained overcurrent; the magnetic short-circuit trip catches faults. The 45 mm width and 96 mm depth mean it occupies a standard single-module footprint on the rail — no extra clearance surprises for the panel builder. Terminal sizing accepts 2x (0.5 to 1.5 mm²) solid or stranded, or 2x (0.75 to 2.5 mm²) with ferrules, which covers the control wiring gauge you'd typically pair with a fractional-amp motor circuit.
That makes it straightforward to slot into a crowded panel without reworking the layout. Power loss is a typical 5 W, so thermal buildup in a sealed enclosure is manageable even with several units ganged.