What this breaker does on your panel
The Siemens 3RV2011-1GA40 is a SIRIUS motor protection circuit breaker designed for screw and snap-on mounting onto 35 mm standard mounting rail per DIN EN 60715. It provides Class 10 trip protection for motor loads, with a rated breaking capacity of 100 kA at 400 V — enough to handle high-fault-current industrial panels without cascading upstream. The 45 mm wide footprint fits standard DIN-rail spacing, and the any-position mounting means you can orient it vertically or horizontally inside the enclosure without derating.
At 400 V this breaker clears 100 kA, the same at 500 V (100 kA) and 240 V (100 kA). At 690 V it drops to 4 kA — still enough for most 690 V motor circuits, but if your system sits at 690 V with high available fault current, you need to check coordination with the upstream device.
Trip class and motor protection
Class 10 trip means the breaker opens within 10 seconds at 600% of the thermal setting — standard for most general-purpose motor starting (pumps, fans, conveyors) where the starting current is moderate.
Clearance and wiring
Forwards and backwards clearance are both 0 mm — the breaker mounts flush against the back panel and nothing projects forward beyond the housing. Upwards and downwards clearance each need 50 mm for cable bending and tool access; side clearance is 30 mm. Main contact terminals accept ring cable lug connections with M3 screws. The operating temperature range is -20 to +60 °C, storage and transport -50 to +80 °C.