What this breaker is and where it lands
The Siemens SIRIUS 3RV2011-0FA10-ZW97 is a motor protection circuit breaker in Size S00 — the compact frame of the SIRIUS family, designed to snap onto a 35 mm DIN rail per DIN EN 60715 and fit into a control panel with a 45 mm width footprint. Rated for motor starting duty with Trip Class 10, it provides phase failure detection and a 100 kA short-circuit breaking capacity at 400 V AC — high enough to coordinate with most downstream contactors without cascading upstream. The operating temperature range of -20 to +60 °C covers most indoor panel environments, and the rated voltage span of 20 to 690 V means it handles everything from 24 V control circuits up to 690 V line feeds.
Clearance and mounting — what the numbers mean for panel layout
The breaker needs 50 mm clearance upward and downward, 30 mm to the side, and zero forward or backward — so you can pack it tight against the backplane or a busbar cover as long as the vertical breathing space is respected. Screw-type terminals on the main circuit accept 2x (0.75 to 2.5 mm²) solid or stranded, or 2x 4 mm² — enough for the motor branch circuit wiring typical of a Size S00 breaker.