SIRIUS Motor Protection Circuit Breaker — 3RV2011-1CA15-0BA0
The Siemens SIRIUS 3RV2011-1CA15-0BA0 is a motor protection circuit breaker designed for CLASS 10 trip characteristics, meaning it disconnects within 10 seconds at 7.2× the thermal setting — standard for protecting standard induction motors during locked-rotor conditions without nuisance tripping on normal starts. Rated breaking capacity hits 100 kA at 400 V and 500 V, and 10 kA at 690 V, so it handles high-fault-current panels without requiring upstream fuses in most industrial distributions. Phase failure detection is built in — if one phase drops, the breaker trips, preventing single-phasing motor burnout. Snap-on mounting onto 35 mm DIN rail per DIN EN 60715, or screw-fix directly; any mounting position allowed. Width is 45 mm, depth 97 mm, height 97 mm — fits standard panel grids.
Panel Integration & Wiring
Screw-type terminals for the main circuit accept 2×(0.5…1.5 mm²) or 2×(0.75…2.5 mm²) solid or stranded copper; M3 screws on main contacts. Clearance distances: 50 mm upwards and downwards, 30 mm at the side, 0 mm forwards and backwards — so it can be packed tight front-to-back but needs vertical breathing room for arc quenching. Operating temperature range -50 to +60 °C with temperature compensation active -20 to +60 °C; storage and transport -50 to +80 °C.