The Schneider Electric A9N4P50CGN is an Acti9 xC60 miniature circuit breaker rated 50 A with a C curve (magnetic trip between 5 and 10 times In) and a breaking capacity of 10 kA Icn at both 240 V and 415 V AC per IS/IEC 60898-1. For a 50 A 4-pole breaker, the 10 kA rating means it can safely interrupt a fault current up to that level on a 415 V three-phase distribution board — typical for commercial or light industrial sub-mains where the prospective short-circuit current is under 10 kA.
Depth is 77.5 mm, height 85 mm — confirm the gland plate clearance if the panel is shallow.
Designed and tested to IS/IEC 60898-1, the Indian-standard adoption of the IEC 60898-1 for MCBs in household and similar installations. The limitation class is 3 per IS/IEC 60898-1, meaning it limits let-through energy to a defined level under short-circuit conditions. Tropicalisation level 2 per IEC 60068-1 indicates the breaker is treated for damp heat — relevant for coastal or high-humidity installations. Overvoltage category IV confirms it can be used at the main distribution board, not just downstream sub-panels.