That's the key fit condition: this breaker goes in a DC-bus or solid-state load circuit, not a general-purpose motor branch (where you'd use C or D curve). Breaking capacity is dual-rated: 10 kA per EN 60898-1 and 35 kA per IEC 60947-2. For a 400 V AC industrial panel with a transformer upstream, the 35 kA rating is what you size against. The IP20 rating applies with conductors connected — standard for inside a closed panel, no washdown exposure.
Approvals include IEC/EN 60898-1, IEC/EN 60947-2, and UL 1077 / CSA C22.2 No. 235 — meaning it passes acceptance for European distribution boards and North American industrial panels. The UL 1077 rating is 5 kA (supplementary protector), so for UL-listed panels the fault-current capability is lower than the IEC figure.
Integration notes
Mounting position any — no derating for horizontal or inverted orientation. Combined terminal at both top and bottom — accepts cable or busbar connection without swapping parts.