The Siemens SIRIUS 3RV2011-0CA25 is a motor protection circuit breaker with Trip Class 10. Rated short-circuit breaking capacity of 100 kA at 400 V AC gives this breaker the headroom to clear a bolted fault on a high-capacity distribution transformer without upstream fuses needing to coordinate. That SCCR figure is the same at 240 V, 500 V, and 690 V — a flat curve that simplifies panel SCCR labeling across multiple voltage levels. Phase failure detection is built in, so the breaker will trip if one phase drops out — preventing single-phasing damage on a delta-connected motor. Temperature compensation is active across the -20 to +60 °C operating range, meaning the thermal trip curve stays accurate whether the panel sits in an unheated warehouse or near a process oven.
Mounting and wiring
Mounts via screw or snap-on onto 35 mm standard mounting rail per DIN EN 60715 in any position. The 45 mm width matches the SIRIUS 3RV2 compact footprint. Spring-loaded terminals accept 2× (0.5 to 2.5 mm²) solid or stranded conductors. No screw torque to verify. Clearance distances: 50 mm upwards and downwards, 30 mm at the side, 0 mm forwards and backwards. The zero-clearance forward/backward spec means the breaker can be butted against the back panel or enclosure door without derating — useful in shallow enclosures.
Lifecycle and sourcing
The 3RV2011-0CA25 is listed at a current lifecycle stage, meaning it remains in Siemens' active catalog and is not subject to a phase-out notice. For a category manager, this reduces the risk of an unplanned last-time-buy within the typical 3–5 year panel warranty window.