The breaking capacity is 6 kA Icn at 400 V AC per EN/IEC 60898-1, and 10 kA Icu at 400–415 V AC per IEC 60947-2 — that dual rating means it's certified for both residential/commercial (60898-1) and industrial (60947-2) fault levels, so you can use it in a sub-distribution board feeding a machine line without worrying about the higher prospective fault current. Pollution degree 3 and tropicalisation class 2 (IEC 60068-1) confirm it's suited for humid, dusty environments like a warehouse or food-processing area, not just a clean control room.
The terminals accept 0.33 to 16 mm² rigid or 0.33 to 10 mm² flexible, with a 13 mm strip length and 2 N·m tightening torque. That covers most panel-building wire sizes from 1.5 mm² control wiring up to 10 mm² feeder tails. The 3-pole unit occupies 6 x 9 mm pitches (54 mm wide), so plan for that slot count on your DIN rail. IP20 front-of-panel protection means it's fine inside an enclosure but not for wet washdown areas.