The Schneider Electric A9N2P16BIN is an Acti9 xC60 miniature circuit-breaker rated 16 A with a B tripping curve, 2 poles, and a breaking capacity of 10 kA at 380–415 V AC 50/60 Hz per IS/IEC 60947-2.
The 10 kA Icn at 415 V AC tells you this MCB can safely interrupt a fault current up to that level without welding its contacts or cascading upstream; at 100–125 V DC the Icu drops to 6 kA, so verify DC fault levels if used on a DC bus. Two protected poles (2P) switch both line and neutral on a single-width 36 mm module, saving one DIN space over a 1P+N arrangement that occupies two modules.
The toggle provides local ON/OFF indication and manual isolation; the suitability-for-isolation marking (per IS/IEC 60947-2) means you can safely use it as a disconnecting means for downstream circuits during maintenance.