What this breaker does on a motor branch
The Siemens SIRIUS 3RV2011-0EA15-ZW97 is a motor protection circuit breaker designed for screw-and-snap-on mounting onto 35 mm DIN rail per DIN EN 60715. It provides Class 10 trip protection for motor starting, with phase failure detection built in — so if a phase drops on a three-phase motor, the breaker opens before the winding cooks. Rated short-circuit breaking capacity hits 100 kA at 400 V AC and holds that figure at 240 V, 500 V, and 690 V — meaning this breaker can sit upstream of a motor starter without needing a separate current-limiting fuse for most industrial fault levels. The 45 mm width keeps the panel fill factor reasonable for a 100 kA rated device. Operating temperature range is -20 to +60 °C, storage and transport go from -50 to +80 °C. Mounting position is any orientation, which helps when you're squeezing it into a tight enclosure corner.
Terminals, wiring, and auxiliary contacts
Main circuit connections use M3 screw-type terminals. The terminal accepts 2x (0.5 to 1.5 mm²) solid or stranded, or 2x (0.75 to 2.5 mm²) — so a standard 1.5 mm² motor cable with a ferrule fits fine, and you can double up if you're looping through. Auxiliary contact ratings: 1 A at 24 V, 0.5 A at 120/125/230 V, and 0.15 A at 60 V. These are the switching capacities for the built-in auxiliary contacts — useful for feeding a PLC input or a contactor coil, but watch the 60 V rating if you're on a DC control circuit. Clearance distances: 50 mm upwards and downwards, 30 mm at the sides, 0 mm forwards and backwards. The zero forward/backward clearance means you can butt it against the panel door or back wall without derating.
How it compares to the 3RV1011-0GA10
The 3RV1011-0GA10 is a physically smaller frame but shares the same SIRIUS family and Class 10 trip characteristic. The 3RV2011-0EA15-ZW97 carries 100 kA at 400 V. Panel cutout is different; the 3RV2011 is 45 mm wide vs the narrower 3RV1011.