The Siemens 3RV1011-0FA25 is a SIRIUS motor protection circuit breaker rated for 0.5 A continuous current with a Class 10 trip characteristic, meaning it protects motor circuits against overload and short-circuit while allowing starting inrush up to about 10 seconds before tripping. It does not include ground fault detection, so if that's required, plan for a separate GF module or residual current device downstream.
Mounting and wiring — zero-clearance fit
Both the main circuit and auxiliary/control connections use spring-loaded terminals accepting 0.25 to 2.5 mm² solid or 24 to 14 AWG stranded. No screw torque to verify — just strip 8–10 mm, push in, done. The auxiliary switch is transverse-mounted and can be extended with additional contact blocks if the built-in 1 A at 24 V or 0.5 A at 230 V contact ratings aren't enough for your PLC input draw.
Breaking capacity — what 100 kA really means
The 100 kA breaking capacity holds across the full voltage range from 240 V to 690 V AC. That's a rare flat curve — most breakers derate as voltage rises. The AC-3 switching capacity is rated for motors up to 0.12 kW at 400 V, which aligns with the 0.5 A continuous setting — this is sized for small drives, pumps, or fan motors in that power band.