Motor protection breaker with 100 kA SCCR
The Siemens SIRIUS 3RV2011-0JA25-ZX95 is a motor protection circuit breaker designed for the main current circuit, with a Class 10 trip characteristic that matches standard induction motor start-up curves — it holds through the inrush and trips on sustained overload before the motor windings overheat. Its 100 kA breaking capacity at 400 V (also rated 100 kA at 240 V, 500 V, and 690 V) means it can safely interrupt fault currents up to that level without upstream fuses needing to clear first — a key spec for panel SCCR compliance under UL 508A. Phase failure detection is built in, so a lost phase on the line side will trip the breaker rather than letting the motor single-phase and burn out.
Mounting and wiring
Snaps onto 35 mm DIN rail per DIN EN 60715, or can be screw-mounted. At 45 mm wide and 97 mm deep, it occupies a single modular slot — fits standard distribution panels without crowding adjacent devices. Spring-loaded terminals on the main circuit accept 2x (0.5 to 2.5 mm²) solid or stranded copper, so no screw torque verification needed during commissioning. Mounting position is any orientation, and the ambient operating range is -20 to +60 °C with temperature compensation active across that span — the trip curve stays accurate regardless of enclosure heat rise.
Motor sizing and auxiliary ratings
Rated motor power is 0.2 kW at 230 V and 0.5 hp at 575/600 V — sized for fractional-horsepower drives, small pumps, or conveyor motors in that power band. Auxiliary contact ratings cover common control voltages: 1 A at 24 V, 0.5 A at 120/125/230 V, and 0.15 A at 60 V — enough to signal a PLC input or energize a contactor coil through the breaker's status contact. For the main circuit, the manufacturer specifies gL/gG fuse backup at 10 A for both 500 V and 690 V applications — coordinate downstream protection accordingly.