The Schneider Electric A9N4P01CIN is a 4-pole miniature circuit-breaker from the Acti9 xC60 family, rated at 1 A with a C-curve trip characteristic. It clips onto a 35 mm DIN rail and is designed for distribution in AC or DC networks at 50/60 Hz. The C curve means magnetic tripping occurs between 5 and 10 times the rated current — here, 8 x In ±20 % — so it handles moderate inrush from small motors or transformers without nuisance trips, while still clearing short circuits fast enough for branch protection. Breaking capacity is 10 kA at 380-415 V AC (IS/IEC 60947-2), and 6 kA at 220-250 V DC — enough for most industrial panel feeders where the upstream transformer or supply can deliver that fault current.
Clip-on mounting on a 35 mm DIN rail, 72 mm wide, occupying 8 modules of 9 mm pitch. The tunnel-type terminals accept up to 25 mm² rigid or 16 mm² flexible cable; strip length is 13 mm.