What this 100 A C-curve MCB does on the rail
It handles AC supplies up to 440 V and DC circuits up to 250 V, with a DC breaking capacity of 10 kA per EN 60898-2 and an AC breaking capacity of 3 kA per EN 60898. The 100 A rating and C-curve (5–10× In magnetic trip) make it a fit for high-current branch circuits feeding resistive or moderate inductive loads — think large contactor coils, lighting banks, or sub-distribution feeds — where the inrush won't nuisance-trip a B-curve but you don't need the higher magnetic threshold of a D-curve.
Wire range and terminal design — panel-builder detail
The 27 mm width (1.5 width units) and 70 mm installation depth keep the panel fill factor tight — you can land a 50 mm² cable in a standard 18 mm DIN-rail pitch without crowding the adjacent breakers.
Rated for ambient temperatures from -25 °C to +55 °C and storage from -40 °C to +75 °C, with up to 95 % humidity. The IP20 protection class (with connected conductors) is standard for enclosed distribution boards; the sealable housing and touch-protection feature support lockout/tagout procedures during maintenance.