Rated for 0.2 kW at 230 V, it's sized for small motor loads like fractional-horsepower pumps, fans, or conveyor drives. That's a serious short-circuit rating for a compact 45 mm wide device — it handles the kind of fault a large transformer or stiff utility feed can throw at it. Screw-type terminals on the main circuit accept 2× (0.5 to 1.5 mm²) solid or stranded, or 2× (0.75 to 2.5 mm²) — common for control wiring.
It feeds a contactor downstream and protects the motor branch circuit. The any-position mounting means you can orient it vertically, horizontally, or even upside-down — handy when you're packing components tight on the rail. No ground fault detection here — that's a separate device if your circuit needs it.