Motor protection circuit breaker for the panel builder
The Siemens SIRIUS 3RV1011-1DA10-ZW97 is a motor protection circuit breaker built for the DIN rail. It snaps onto a 35 mm standard mounting rail per DIN EN 60715 and takes screw-type terminals for the main current circuit, so it lands in the panel the same way every time. Trip Class 10 means it clears a locked-rotor condition within 10 seconds at the set overload current — fast enough to protect standard induction motors without nuisance tripping on normal starts. The 100 kA breaking capacity at 400 V gives headroom for high-fault installations; the same 100 kA holds at 240 V. At 690 V it still interrupts 2 kA, which covers most industrial supply transformers.
What the ratings mean for the line
Phase failure detection is built in — if one leg drops out, the breaker trips. That prevents single-phasing on a motor load, which is the quickest way to cook a winding. The 45 mm width and 75 mm depth fit a standard 8-module enclosure row; you can stack them side-by-side with 9 mm clearance to the next device. No forced spacing needed above or below — 20 mm upwards and downwards, zero forwards and backwards. Operating temperature range is -20 to +60 °C, with temperature compensation across the same span. Storage and transport tolerate -50 to +80 °C, so it survives a cold warehouse or a hot truck without issue.
Panel fit and wiring notes
Mounting position is any orientation — no derating needed for horizontal or inverted installation. The fastening method accepts both screw-fixed and snap-on onto 35 mm DIN rail, so it works in a pre-punched backplate or a standard enclosure rail. Terminals accept 2x (0.5 to 1.5 mm²) solid or stranded, or 2x (0.75 to 2.5 mm²). The main contact screws are M3. No special tools beyond a standard screwdriver.