For a B-curve device, the magnetic trip fires between 12 A and 20 A — fast enough to clear a hard short but tolerant of the small capacitive inrush from LED drivers or electronic ballasts. The 1P+N pole arrangement switches the line conductor through the thermal-magnetic mechanism and the neutral through a linked switch — the neutral pole is not protected, so it must not be used as a switched line in a 2-pole application. Terminal capacity accepts solid or stranded conductors from 0.75 mm² up to 25 mm², which covers most branch-circuit wiring from 1.5 mm² lighting circuits up to 6 mm² feeder tails. The screw terminals call for 2.5 to 3 N·m of torque — a common range for a Pozi-drive terminal on a 4 A device.
Mounting position is unrestricted, so it can be installed horizontally or inverted if the panel layout demands it — though vertical orientation with line at the top is conventional for thermal performance. For coordination studies, the energy limiting class 3 means it lets through less energy than a class 2 or 1 device, which helps with downstream cable protection and reduces arc-flash incident energy on the load side.