The D-curve means its magnetic trip threshold is 12 x In ±20% — so it holds through the inrush of motor or transformer loads without nuisance tripping, then clears a hard fault fast. This is the MCB you spec for a motor branch or a high-starting-current circuit in a distribution board.
Rated at 36 kA Icu at 12-60 V AC (EN/IEC 60947-2) and 20 kA Icu at 100-133 V AC, the A9F05116 handles high prospective fault currents common in industrial panels. At 230 V AC the Icn rating under EN/IEC 60898-1 is 6000 A, which covers residential and light commercial final circuits. It carries dual certification — EN/IEC 60947-2 for industrial isolation and EN/IEC 60898-1 for domestic installation — so the same part works across both worlds. Overvoltage category IV means it's rated for the main incoming supply, not just sub-circuits.
Width is 18 mm (2 x 9 mm pitches), so it occupies one modular space in a distribution board. The double terminal accepts 1-25 mm² rigid or 1-16 mm² flexible cable top and bottom; strip length is 14 mm. IP20 finger-safe terminals — fine for enclosed panels; keep it behind a locked door.
The A9F05116 is an active catalogue line within the Acti9 range, so factory supply is stable. Same part, different passport — genuine is genuine, and we move it through independent channels that keep the BOM line filled without the premium of an authorised-distributor-only route.