The Schneider Electric A9N4P10CIN is an Acti9 xC60 miniature circuit breaker — a 4-pole thermal-magnetic MCB rated for 10 A with a C-curve trip characteristic, magnetic tripping at 8 x In ±20 %. Breaking capacity is 10 kA Icn at 380–415 V AC, 50/60 Hz per IS/IEC 60947-2 — that's the fault current it can safely interrupt without welding contacts or cascading upstream, sized for most commercial and light industrial sub-distribution boards where the prospective short-circuit current stays under 10 kA. Clip it onto a standard 35 mm DIN rail — 4-pole body takes 72 mm width (9 mm pitches × 8), leaving room for adjacent breakers or accessories in the same row.
Integration notes — what to watch in the panel
IP20 finger-safe on the front; earth-leakage protection requires a separate Vigi block (not integrated), so plan for an adjacent slot if RCD protection is needed downstream.