The Schneider Electric A9N1P20DIN is an Acti9 xC60 miniature circuit-breaker rated 20 A with a D tripping curve, single-pole, designed for distribution applications per IS/IEC 60947-2. The D curve means magnetic trip occurs at 12 x In (240 A) with a ±20 % tolerance, so it handles high inrush loads like motor starters or transformer primaries without nuisance tripping on startup.
Breaking capacity is 10 kA Icu at 220…240 V AC 50/60 Hz, 15 kA Icu at 12…48 V DC, and 6 kA Icu at 60 V DC — all conforming to IS/IEC 60947-2. For a 20 A feeder, 10 kA SCCR at 240 V is typical for light industrial panelboards; the DC ratings let it serve control circuits on battery-backed or rectified supplies. The limitation class is 3 per IS/IEC 60947-2, meaning it limits let-through energy enough to protect downstream wiring and loads in most fault scenarios.
Clip-on mounting to a standard 35 mm DIN rail, 18 mm width (2 x 9 mm pitches), 85 mm height, 77.5 mm depth — fits a standard 4-module panel space. Tightening torque 2 N·m; strip length 13 mm.