The Siemens SIRIUS 3RV2011-1CA15-ZW97 is a motor protection circuit breaker designed for Class 10 trip response, meaning it disconnects within 10 seconds at 7.2× the thermal setting — fast enough to protect standard induction motors during a locked-rotor event without nuisance tripping on normal starts. It occupies 45 mm of DIN rail width (97 mm deep, 97 mm tall) and mounts via screw or snap-on onto 35 mm rail per DIN EN 60715, so it fits standard panel layouts without special brackets.
Short-circuit ratings and coordination
Rated short-circuit breaking capacity reaches 100 kA at 240 V, 400 V, and 500 V — that is the interrupting rating at the device terminals, not a system SCCR. At 690 V the rating drops to 10 kA. For motor protection, the gL/gG fuse coordination limits are 25 A at 400/500 V and 20 A at 690 V, so upstream fuse sizing must stay within those values to maintain the declared breaking capacity. Phase failure detection is built in, which prevents single-phasing damage on three-phase motor loads.
Mounting and wiring
Mounting position is any orientation. Main contact terminals accept 2 × (0.5 to 1.5 mm²) solid or stranded, or 2 × (0.75 to 2.5 mm²) — M3 screw terminals. The 45 mm width matches the standard SIRIUS compact breaker footprint, so it rows alongside contactors and overload relays on the same DIN rail without wasted space. Clearance to adjacent devices: 50 mm upward and downward, 30 mm to the side, zero forward and backward.