The Siemens 3RV2011-0JA10 is a SIRIUS motor-protection circuit breaker designed to protect motors against overload and short circuits. It is Trip Class 10, meaning it will trip within 10 seconds at 7.2× the thermal setting — fast enough for standard induction motors starting under load. The 100 kA breaking capacity at 400 V AC means it can interrupt a fault current up to that level without upstream fuses or breakers needing to clear the fault; this rating holds across 240 V through 690 V (, –), so it handles high-fault-capacity panels without cascading coordination issues.
The 45 mm width occupies a single modular slot — fits standard panel layouts without oversizing the enclosure. Screw-type terminals on the main circuit accept 2× (0.75…2.5 mm²) solid or stranded, or 2× 4 mm². Ambient operating range –20…+60 °C; storage –50…+80 °C.