The Schneider Electric A9N1P01CIN is a 1 A, 1-pole miniature circuit breaker from the Acti9 xC60 series, built to IS/IEC 60947-2. It clips onto a 35 mm DIN rail — 18 mm wide, 85 mm tall, 77.5 mm deep — and uses a thermal-magnetic trip unit with a C-curve (magnetic trip at 8 x In +/- 20 %). Overvoltage category IV means it's rated for the mains entrance, not just downstream sub-distribution.
The C-curve holds through 5x to 10x In before instant tripping, so it tolerates the inrush of a 24 VDC power supply or a contactor coil without nuisance trips. IS/IEC 60947-2 utilisation category A means it's not intended for motor-starting duty — it's a distribution breaker, not a motor-protective device.
Tightening torque 2 N.m. Pollution degree 3 — suitable for industrial atmospheres with conductive pollution, provided the enclosure keeps out direct contamination.
