The Siemens 3RV1011-1DA10-ZW96 is a SIRIUS 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 stall without nuisance tripping on normal starting inrush. Breaking capacity is 100 kA at both 240 V and 400 V, so it handles high-fault-current scenarios common in industrial distribution without needing an upstream current-limiting fuse for most installations.
Mounting and integration
Fastens via screw or snap-on onto 35 mm DIN rail per DIN EN 60715, occupying a 45 mm wide footprint. Mounting position is any orientation, which simplifies panel layout when rail space is tight or the enclosure is side-mounted.
Key ratings and what they mean for fit
Phase failure detection is built in — if one phase drops out, the breaker trips, preventing single-phasing damage to the motor. No ground-fault detection on this variant, so external ground-fault protection is needed if that's a requirement. Screw-type terminals on the main circuit accept 2× (0.5…1.5 mm²) or 2× (0.75…2.5 mm²) solid or stranded copper — common panel wire sizes, no special lugs required. Dimensions: 45 mm wide, 75 mm deep, 90 mm tall. Clearance above and below the unit is 20 mm each; side clearance is 9 mm. No space needed forward or backward, so it can sit flush against the backplane.