What it is and what it does
The Siemens SIRIUS 3RV1011-0DA10-ZX95 is a motor-protective circuit breaker designed for motor protection, Trip Class 10, with a 100 kA breaking capacity at 400 V AC. It mounts on 35 mm DIN rail per DIN EN 60715 via screw or snap-on, and its 45 mm width fits standard panel spacing. Phase failure detection is built in, so it drops the motor on a lost phase before single-phasing damages the winding. No ground-fault detection on this variant.
DIN rail fit and clearances
Footprint is 45 mm wide, 90 mm tall, 75 mm deep. Clearance requirements: 20 mm upward, 20 mm downward, 9 mm to the side, zero forward or backward. That means it packs tight against a backpanel or enclosure wall — no extra breathing room needed on the face or rear. Screw-type terminals on the main current circuit accept 2x (0.5 to 1.5 mm²) solid or stranded, or 2x (0.75 to 2.5 mm²). Terminal screws are M3 for the main contacts.
Breaking capacity and duty cycle
Rated breaking capacity hits 100 kA at 240 V, 400 V, 500 V, and 690 V AC — that's the same 100 kA across the board, no derating curve up to 690 V. At 480 V and 600 V the listed current is 0.32 A, which looks like a data artifact; the real motor-protection rating is governed by the overload setting range, not those figures. Maximum switching frequency in AC-3 duty is 15 operations per hour; same for AC-3e. That's typical for a motor-starting breaker — not for frequent jogging or reversing service.