The Siemens SIRIUS 3RV1011-1DA10-0FJ0-ZX95 is a motor protection circuit breaker rated for 3.2 A continuous current with a CLASS 10 trip characteristic, meaning it disconnects within 10 seconds at 7.2× rated current — fast enough to protect standard induction motors during stall or overload without nuisance tripping on normal startup inrush. Phase failure detection is built in, so on a three-phase motor losing one leg, the breaker trips before single-phasing damages the winding. No ground-fault detection on this variant. Breaking capacity runs 100 kA at 240 V and 400 V AC, then drops to 3 kA at 500 V and 2 kA at 690 V AC — the 100 kA figure handles high-fault utility feeds; the lower 690 V rating still clears faults on 690 V industrial networks.
Mounts via screw or snap-on onto 35 mm DIN rail per EN 50022. Dimensions are 45 mm wide, 90 mm tall, 81 mm deep — fits a standard 45 mm modular slot, leaving room for adjacent breakers or contactors in a motor starter lineup. Screw-type terminals on the main circuit accept 2x (0.5…1.5 mm²) solid or stranded, or 2x (0.75…2.5 mm²) — common panel wire sizes. The auxiliary switch option is present on this unit (: Yes). Rated for any mounting position, operating ambient -20 to +60 °C, storage/transport -50 to +80 °C. Shock rated 25g / 11 ms. IP20 on the front — protected against finger contact, not washdown.
Power dissipation at AC in hot operating state is 7.25 W total, 2.4 W per pole — factor that into enclosure thermal calculations if grouping multiple breakers in a sealed panel.