The Schneider Electric A9N1P02DGN is a 2 A, D-curve miniature circuit breaker from the Acti9 xC60 range, designed for distribution applications where high inrush currents are expected — motor, transformer, or lighting ballast loads that would nuisance-trip a C-curve device. Its thermal-magnetic trip unit responds to sustained overloads via the bimetal element and to short-circuit faults via the solenoid, with magnetic tripping set at 10 to 14 times In (20 to 28 A). The 10 kA breaking capacity at 240 V AC (IS/IEC 60898-1) means it can safely interrupt fault currents up to that level without welding contacts or cascading upstream — essential for coordination in a panel fed by a transformer with moderate fault current.
The 18 mm width occupies two 9 mm pitches — a single-pole breaker that fits a standard modular enclosure slot. Depth of 77.5 mm and height of 85 mm leave clearance for wiring and cover. Tunnel-type terminals accept up to 25 mm² rigid or 16 mm² flexible conductors; wire stripping length is 13 mm for top or bottom connection. IP20 finger-safe protection is standard for panel-mount breakers — no additional shrouding needed inside a closed enclosure.