Breaking capacity — what the two ratings mean
The higher 15 kA figure governs when this MCB is installed in an industrial panel where fault current may be stiffer — it will safely interrupt a short-circuit up to 15 kA at 400 V AC without welding the contacts or cascading upstream. The 10 kA EN rating covers the same part when used in a domestic or light-commercial distribution board.
The 70 mm depth matches typical distribution board cutouts. Protection is IP20 with conductors connected (IP40 in the handle area) — suitable for enclosed panels; not rated for washdown. Terminal tightening torque is 3.5 Nm for Cu conductors.
