The K curve means it trips between 10x and 14x rated current, designed for motor and inductive loads where a brief inrush current must not cause nuisance tripping.
Snap-on mounting to 35mm DIN rail (EN 60715) for panel integration. The 2-pole width occupies two modular units (36mm). Wire terminals accept up to 25mm² for line and load connections; the busbar comb slots are standard for the 5SL series, allowing common feed across adjacent poles.