The K characteristic means it trips magnetically at 10–14 times rated current, designed for motor and transformer loads where inrush is higher than lighting or resistive circuits.
Panel integration
Snap-on DIN rail mounting for standard 35 mm rail. Two-pole width occupies 36 mm (2 modules of 18 mm each). The K characteristic is the deciding spec for motor branch circuits — verify the motor full-load amps sit below 25 A and that the inrush curve (10–14x In) coordinates with the upstream protective device.