It includes phase failure detection, so if one leg drops out the breaker opens before single-phasing cooks the motor. No ground fault detection here — that's a separate device if you need it. Rated operating voltage spans 20 to 690 V AC, which covers everything from 24 V control transformers up to 690 V industrial mains. At 690 V it's still rated for 2 kA, so it handles the higher voltage but with reduced fault-handling ability.
DIN-rail fit and panel clearance
The 45 mm width means it takes up a single modular slot — no wider than a typical miniature circuit breaker, so it fits neatly in a crowded enclosure. Side clearance is only 9 mm. That tight envelope means you can pack multiple units side by side without derating, as long as ambient stays under 60 °C during operation. The M3 contact screws are standard — any electrician's screwdriver fits. Mounting position is any orientation, so it works in horizontal busbar layouts or vertical panel arrangements without derating the thermal trip.