The Siemens SIRIUS 3RV2011-1FA25-ZX95 is a motor protection circuit breaker in the S00 frame size, designed to combine overload and short-circuit protection in a single device for a 3-phase motor branch. Its CLASS 10 trip characteristic means it will trip within 10 seconds at 7.2× the overload setting — fast enough to protect standard induction motors during a locked-rotor event without nuisance tripping on normal starts. The adjustable overload release covers 3.5 to 5 A, and the fixed magnetic short-circuit release fires at 65 A, so it clears a hard fault before the motor contributes significant let-through energy. Breaking capacity hits 100 kA at 240 V, 400 V, and 500 V AC, then drops to 4 kA at 690 V AC — the high 100 kA figure means it can be used downstream of a high-capacity transformer without requiring a current-limiting upstream breaker in most industrial panels. The spring-type terminals accept 2× (0.5 to 1.5 mm²) solid or ferruled stranded, and the S00 width of 45 mm lets it snap onto a 35 mm DIN rail per EN 60715, with zero side clearance needed for side-by-side mounting.
Sourcing and fit verification
This exact order code is sourced through independent distribution channels and quoted to order against an RFQ — availability and current pricing are confirmed at quote time. The 45 mm width and 97 mm depth match the standard S00 footprint, so it drops into any panel already laid out for a SIRIUS motor starter without re-drilling the DIN rail or re-routing the main conductors.