It carries a CLASS 20 trip curve, meaning it allows a 20-second overload before tripping — sized for standard induction motor starting without nuisance trips on the inrush. Rated for 18.5 kW at 230 V and with a breaking capacity of 30 kA at 400 V, it handles the fault currents typical of industrial distribution panels.
Ratings and Real-World Fit
The motor power rating of 18.5 kW at 230 V matches a 25 hp motor roughly; at 400 V the rating is not directly given but the current settings (160 A at 400 V,) indicate the breaker's thermal-magnetic range. CLASS 20 is the standard for general-purpose induction motors — pumps, fans, compressors — not for high-inertia loads that need a longer trip class.
Screw-type terminals for the main current circuit accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) solid or stranded wire. Mounting position any — no restriction, so it fits in horizontal or vertical DIN-rail layouts. The M6 main contact screws handle the lug size typical for this current class.