Mounts on DIN rail, occupies 35 mm width per pole — 70 mm total for the 2-pole unit. The IP20 / IP40 enclosure rating means it's protected against solid objects over 12 mm (finger-safe) in normal use, with IP40 offering additional protection against objects over 1 mm.
The 10 A C-curve is the spec that decides selectivity with downstream MCBs. The 69 mm depth fits standard DIN-rail enclosures; the bi-directional cylinder-lift terminals accept up to 2.8 Nm tightening torque, which is typical for 10 A rated screw terminals.