The Schneider Electric A9F03413 is an Acti9 iC60N miniature circuit-breaker rated 13 A with a B curve, 4 poles, and a 36 kA Icu breaking capacity at 12…133 V AC.
The B curve means the magnetic trip fires at 4 x In ±20 % — 52 A nominal, 41.6 A to 62.4 A window. That suits resistive and general-purpose loads where you want a moderate inrush tolerance, not the high inrush of a C curve or the tight protection of a Z curve. At 220…240 V AC it drops to 20 kA Icu, and at 380…415 V AC to 10 kA Icu. The Icn (rated short-circuit capacity) per EN/IEC 60898-1 is 6 kA at 400 V AC. For a 13 A distribution MCB in a typical 400 V panel, the 6 kA Icn is the number that governs the installation standard. It carries dual certification to EN/IEC 60947-2 (industrial) and EN/IEC 60898-1 (household / similar), so it qualifies for both industrial control panels and building distribution boards.
Deployment context
The 4-pole format handles three-phase plus neutral in one unit — common for sub-distribution boards or machine supply panels. The IP20 finger-safe terminals are fine inside a closed enclosure; no washdown rating here.