The Siemens SIRIUS 3RV1011-0DA10-ZI41 is a motor protection circuit breaker sized for a 0.09 kW motor at 400 V AC, with a continuous current rating of 0.32 A and a CLASS 10 trip characteristic — meaning it will trip within 10 seconds at 7.2x the thermal setting, which is the standard for protecting standard induction motors during startup without nuisance tripping on normal acceleration. Rated for 690 V AC and delivering a 100 kA breaking capacity across the full voltage range (240 V through 690 V), this breaker can handle high fault currents common in industrial distribution without needing upstream fuses for short-circuit protection — it's self-protecting at those levels. Phase failure detection is built in, so it will drop the load on loss of any one phase, preventing single-phasing damage to the motor. No ground-fault detection here — that's handled separately if needed.
Panel fit and wiring
Mounts on 35 mm DIN rail per EN 50022, screw or snap-on. The 45 mm width and 81 mm depth are standard for the SIRUS 3RV1 frame — leaves room for adjacent contactors or overloads in a motor starter lineup. IP20 on the front face is typical for enclosed panels; no washdown rating, so keep it inside the cabinet. Screw-type terminals on the main circuit accept 2x (0.5...1.5 mm²) solid or stranded, or 2x (0.75...2.5 mm²) — fine for the 0.32 A motor branch. AWG equivalent is 2x (18...14). No auxiliary contacts included (0 built-in), so if you need remote status, add the separate auxiliary switch block.
Environmental and mechanical
Operates from -20 °C to +60 °C ambient; storage and transport range is -50 °C to +80 °C. Shock-rated to 25g for 11 ms — survives typical panel vibration and transport. Rated for installation up to 2,000 m altitude without derating. Mechanical endurance is 100,000 operations on the main contacts. Power dissipation is 5.5 W total at rated current in hot operating state, or 1.8 W per pole — negligible heat for panel thermal calculations, but worth noting if you're packing many units in a small enclosure.