Rated 40 kA at 400 V AC per IEC 60947-2 and 15 kA at 60 V DC, it handles substantial fault current without cascading upstream.
The DC rating of 15 kA at 60 V matters if you are protecting a DC bus or control supply; note the maximum DC operating voltage is 72 V. Under UL 1077 the same part carries a 5 kA interrupting rating — a different standard, so check your local code requirement. The D curve means the magnetic trip threshold sits between 10× and 20× the rated current, so it ignores the brief inrush of a motor or transformer but clears a hard short fast.
At 18 mm wide (1 MW), this MCB occupies a single position on a DIN rail. The quick-assembly fastening method means it clips on and off without tools — handy for panel rework or field swap. Mounting position is any orientation, so you are not forced to keep it upright. Vibration resistance per IEC 60068-2-6 (±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz) covers normal industrial machinery vibration without loosening connections.