It breaks 6 kA at 400 V AC per EN 60898 and 5 kA per UL 1077 / CSA C22.2 No. 235 — enough for branch-circuit protection in industrial panels and mechanical-engineering applications.
The D curve (10–20× In) is the key spec: it handles inrush from motor loads, transformers, and power supplies without nuisance tripping — unlike a B or C curve, which would trip on the same surge. At 25 A, this breaker suits a 7.5 kW motor on 400 V three-phase or a cluster of smaller inductive loads. Breaking capacity: 6 kA at 400 V AC per EN 60898 covers most industrial distribution boards; the 5 kA UL 1077 rating confirms it for North American panel use where the available fault current is under that level. Snaps onto a DIN rail (quick-assembly system) and needs 36 mm width — two 18 mm width units. Terminal design allows combined top and bottom feed, and the sealable cover satisfies lockout/tagout requirements on the line.