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.
Breaking capacity and selectivity
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. The 100 kA rating at 400 V means it safely interrupts faults up to that level without needing a current-limiting upstream breaker, which simplifies panel design and saves a slot.
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. Phase failure detection is built in, so a lost phase on a three-phase motor will trip the breaker before the motor overheats. No ground fault detection on this variant, so if you need ground-fault protection, you'll add an external module or use a different SIRIUS order code.
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.