It clips onto a standard 35 mm DIN rail and is built for distribution panels in residential, commercial, and light industrial AC networks at 220...240 V AC, 50/60 Hz.
The D curve has a magnetic trip threshold of 10...14 x In, so it holds through the high inrush of motor and transformer loads without nuisance tripping — that is the main reason to pick D over B or C. The thermal-magnetic trip unit handles the overload side.
Wire strip length is 13 mm, torque to 3.5 N.m. Electrical durability is 10 000 cycles, mechanical 20 000 — solid for a panel MCB.
