Motor protection circuit breaker, Class 10 trip
The Siemens 3RV1011-1HA10-ZW96 is a SIRIUS motor protection circuit breaker designed for motor protection, with a Class 10 trip characteristic that clears overloads within 10 seconds at 7.2× the thermal setting — matching the thermal time constant of standard induction motors during a stall or jam. It mounts via screw and snap-on onto 35 mm DIN rail per DIN EN 60715, occupying 45 mm width, 90 mm height, and 75 mm depth — a standard three-module footprint that fits existing panel layouts without re-spacing. Phase failure detection is built in, so the breaker trips on loss of one phase — preventing single-phasing damage to the motor winding.
Breaking capacity and backup fuse coordination
Rated breaking capacity reaches 100 kA at 240 V, dropping to 13 kA at 400 V, 3 kA at 500 V, and 2 kA at 690 V — the 400 V figure is the one that governs on a standard 400 V three-phase line, and it comfortably exceeds typical 10 kA SCCR requirements for motor branch circuits. For higher fault currents, the manufacturer specifies backup fuse coordination: gL/gG 80 A at 240 V, 63 A at 400 V, 40 A at 500 V, and 40 A at 690 V — these are the maximum fuse ratings that still allow the breaker to clear a fault without damage to itself.
Termination and environmental limits
Main circuit connections use screw-type terminals accepting 2× (0.5…1.5 mm²) or 2× (0.75…2.5 mm²) solid or stranded copper — M3 screws on the main contacts, so a PZ1 bit and the standard torque spec apply. Operating temperature range is -20 to +60 °C; storage and transport tolerate -50 to +80 °C. Mounting position is any orientation, with 20 mm clearance required above and below, 9 mm at the sides, and zero forward or backward clearance — so it can be stacked tightly side-to-side.