What it is and where it fits
The Siemens 3RV1011-1EA10-ZW97 is a SIRIUS motor protection circuit breaker designed for motor protection duty. It snaps onto a 35 mm DIN rail per DIN EN 60715, so it integrates into any standard control panel enclosure. At 45 mm wide, 90 mm tall, and 75 mm deep, it leaves room for adjacent contactors and overloads in a motor starter lineup.
Key ratings and what they mean for your motor circuit
Trip Class 10 means this breaker clears a stalled-rotor condition within 10 seconds at 7.2× rated current — the standard for standard-duty induction motors driving pumps, fans, and conveyors. The 100 kA breaking capacity at both 240 V and 400 V gives you full selectivity with upstream fuses or a main breaker; you won't cascade a fault to the bus. Phase failure detection is built in, so a lost phase on the line side trips the breaker before single-phasing cooks the motor winding. Rated operational voltage spans 20 to 690 V, covering most low-voltage motor circuits. The screw-type terminals accept 2×(0.5 to 1.5 mm²) or 2×(0.75 to 2.5 mm²) solid or stranded — standard panel wire sizes, no special ferrules needed. Mounting position is any, which helps when the panel layout forces a sideways or inverted fit.