MCCB for motor protection with electronic trip
The 120 kA breaking capacity at 400 V AC gives ample headroom for high-fault installations, and the adjustable trip class (10, 20, or 30) lets you match the thermal curve to the motor start profile — critical for high-inertia loads like centrifuges or conveyors. Both the overload release and short-circuit trip are electronic, which means more precise protection than bimetal/hydraulic designs, especially under repeated starts or elevated ambient temperatures.
Mounts via screw fixing in any position — no DIN-rail clip here, so plan for direct panel mounting with the 105 mm width and 103.5 mm depth footprint. The IP20 front protection means it's finger-safe inside an enclosure but not suitable for washdown environments without additional guarding.
Breaking performance across voltage levels
Rated short-circuit breaking capacity varies by voltage: 100 kA at 240 V, 120 kA at 400 V, 85 kA at 500 V, and 70 kA at 690 V AC — the 120 kA at 400 V is the standout figure for most industrial distribution. Operating frequency is limited to 15 operations per hour at AC-3 duty, so this is a protection device, not a switching contactor for frequent cycling.