The Siemens 3RV2011-0CA10-ZW96 is a SIRIUS motor-protection circuit breaker in frame size S00, designed to protect motor branch circuits against overload and short-circuit. Rated breaking capacity hits 100 kA at 400 V AC (and at 240 V, 500 V, and 690 V AC), which gives solid SCCR headroom for most industrial panel designs without needing a current-limiting upstream fuse.
Clearance requirements are 50 mm above and below, 30 mm to the side, and zero forward or backward. That 45 mm width means it occupies one standard 45 mm module slot on the rail, leaving room for a contactor or overload relay alongside. Terminals accept 2x 0.75–2.5 mm² solid/stranded or 2x 4 mm², with M3 screw terminals for the main circuit. Screwdriver spec is a PZ2 tip, shaft diameter 5–6 mm. Strip and torque per the terminal markings — no special tooling needed.