It's built to IEC 60947-2 for distribution duty, with a breaking capacity of 50 kA Icu at 440 V AC and 42 kA at 690 V AC.
The 42 kA Icu at 690 V AC covers most industrial 690 V distribution systems; the 50 kA at 440 V is the higher fault-current side. Rated service breaking capacity (Ics) matches the Icu values, so the breaker can reclose after a fault at those levels without maintenance — that's Category B utilization, per IEC 60947-2. The IP40 enclosure keeps out tools and wires larger than 1 mm, but not dust ingress; it's for indoor switchgear, not washdown areas.
Drawout mounting on a rail with rear horizontal or vertical connections. The 115 mm connection pitch without spreader matches standard busbar spacing. Neutral is on the right. Mechanical durability is 20,000 cycles with maintenance, 10,000 without — plan the maintenance interval around the 10,000-cycle mark if the breaker sees frequent switching.