The Siemens SIRIUS 3RV1011-1KA10-ZW95 is a motor protection circuit breaker designed for Class 10 trip characteristics. It mounts via screw and snap-on onto 35 mm DIN rail per DIN EN 60715, fitting standard panel layouts without extra hardware. Rated for breaking capacities of 100 kA at 240 V, 13 kA at 400 V, 3 kA at 500 V, and 2 kA at 690 V, this breaker handles fault currents typical in industrial motor circuits. The Class 10 trip curve means it disconnects within 10 seconds at 600% of the thermal setting, protecting standard induction motors from overload without nuisance tripping on startup inrush. Phase failure detection is built in, so the breaker trips if one phase drops out — preventing single-phasing damage on a three-phase motor. Screw-type terminals accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) solid or stranded copper, which covers most motor branch-circuit wiring sizes.
Mounting and Fit
At 45 mm wide and 90 mm tall, this breaker occupies a single modular space on the DIN rail. The 75 mm depth leaves clearance for wiring behind the panel door. Mounting position is any orientation; the specified clearances are 20 mm upward and downward, 9 mm to the side, and 0 mm forward or backward — meaning it can sit tight against the backplane.