The Schneider Electric A9N2P25CIN is a 2-pole miniature circuit breaker from the Acti9 xC60 range, rated 25 A with a C-curve trip characteristic. The C-curve means magnetic tripping occurs at 8 x In (200 A) ±20% — designed for inductive loads like motor starters and small transformers where inrush current exceeds resistive load levels. The 10 kA breaking capacity at 380…415 V AC (IS/IEC 60947-2) tells you this MCB can safely interrupt a fault current up to 10,000 A without welding its contacts or cascading failure upstream. For DC circuits, the rated breaking capacity is 6 kA at 100…125 V DC, so it handles moderate DC faults but not high-voltage DC bus work.
Width is 36 mm — 4 x 9 mm pitches — so it occupies two standard modular positions on the rail. Depth of 77.5 mm and height of 85 mm mean it fits most distribution boards without crowding the gland plate. Wire stripping length is 13 mm for top or bottom connection. IP20 finger-safe protection is fine for enclosed panels; not rated for washdown environments.
Limitation class 3 per that standard means it limits let-through energy well — useful for downstream component protection.