The Schneider Electric A9N2P20DIN is a 2-pole miniature circuit breaker from the Acti9 xC60 series, rated at 20 A with a D-curve trip characteristic. The 10 kA breaking capacity at 380-415 V AC is the fault current it can safely interrupt; that rating is verified to IS/IEC 60947-2, which covers industrial circuit-breaker performance beyond the residential standard. For a 20 A circuit feeding a motor or a bank of contactors, this is the right curve.
The breaker occupies 36 mm width on a 35 mm DIN rail — that's four 9 mm pitches, which is the standard modular width for a 2-pole MCB in European-style panels. Depth is 77.5 mm, height 85 mm. The tunnel-type terminals accept up to 25 mm² rigid or 16 mm² flexible wire; strip length is 13 mm and tightening torque is 2 N·m. The toggle actuator gives local ON/OFF indication.