Its 2 A continuous current rating and CLASS 10 trip characteristic mean it protects standard induction motors against overload and short-circuit without nuisance tripping on normal startup inrush.
Width is 45 mm. Mounts in any orientation, and the IP20 finger-safe front means it can sit near the cabinet door without a separate cover. Keep 0 mm clearance at the back and sides — no derating for side-by-side stacking in a standard enclosure.
What the ratings mean in practice
The CLASS 10 trip curve means the bimetal releases in under 10 seconds at 7.2× rated current — fast enough to protect a standard 4-pole motor winding during a stall, slow enough to let it start a high-inertia fan or pump without nuisance trips. Rated operational power of 0.75 kW at 400 V AC-3 matches a standard 1 HP IEC motor. The auxiliary switch option (transverse design) lets you wire a remote fault indication or a holding circuit without adding a separate contactor block. Spring-loaded terminals accept AWG 24 to 14 — common for North American control wiring. The 7.25 W power dissipation at rated current is low enough that multiple breakers can be ganged in a sealed enclosure without active cooling, as long as ambient stays under 60 °C.