Motor protection circuit breaker, SIRIUS series — 3RV2011-0AA15-ZX95
The Siemens SIRIUS 3RV2011-0AA15-ZX95 is a motor protection circuit breaker designed for motor starting and protection in control panels. It snaps onto a 35 mm DIN rail per DIN EN 60715, making panel integration straightforward — the 45 mm width and 97 mm depth fit standard gland-plate layouts without crowding adjacent devices. Rated breaking capacity of 100 kA at 400 V AC means this device can safely interrupt fault currents up to that level without upstream fuses or a larger breaker — critical for high-fault-capacity installations where coordination matters. The same 100 kA rating holds at 240 V, 500 V, and 690 V AC as well. Trip Class 10 ensures the breaker trips within 10 seconds at 7.2× the thermal setting, matching standard IEC/EN 60947-4-1 requirements for motor protection. Phase failure detection is built in — if one phase drops, the breaker opens, preventing single-phasing damage to the motor.
DIN-rail integration and wiring
Mounting position is any orientation; screw and snap-on onto 35 mm rail per DIN EN 60715. Clearance: 50 mm upward and downward, 30 mm at the side, 0 mm forward and backward — so you can butt it against a backplane or adjacent devices on the rail. Main circuit terminals accept 2×(0.5…1.5 mm²) or 2×(0.75…2.5 mm²) solid or stranded wire, M3 screw-type. Operating temperature range -20 to +60 °C with temperature compensation built in over that span. Storage and transport range -50 to +80 °C. The -20 °C floor means it's fine for unheated enclosures in temperate climates, but not for deep-freeze or arctic installations.
Duty cycle and switching ratings
Maximum switching rate in AC-3 duty is 15 operations per hour — sized for occasional motor starts, not high-cycle applications like rapid reversing or jogging. For higher cycle rates, step to the 3RV2 series with higher mechanical endurance. Auxiliary contact ratings: 1 A at 24 V, 0.5 A at 120/125/230 V, 0.15 A at 60 V. These are typical for signaling back to a PLC input or a contactor coil; stay within these limits to avoid contact welding.