The Schneider Electric A9N2P25DGN is an Acti9 xC60 miniature circuit breaker (MCB) with a D tripping curve, rated 25 A, 2-pole, for AC networks at 50/60 Hz.
D-curve magnetic trip triggers at 10 to 14 times rated current (10...14 x In). That means the breaker stays closed through the short-duration inrush of a motor or a transformer primary, but opens fast on a hard short. The 25 A rating and 2-pole configuration protect both phase conductors in a single-phase or split-phase circuit. Breaking capacity is 10 kA Icn at both 240 V AC and 415 V AC, certified to IS/IEC 60898-1. The IP20 finger-safe terminals suit enclosed panels only. Thermal-magnetic trip combines a bimetal element for overload protection and a solenoid for short-circuit. Earth-leakage protection is handled by a separate block (not integrated), so you pair it with an RCCB or RCBO upstream if ground-fault protection is needed.
Width is 36 mm (4 x 9 mm pitches), height 85 mm, depth 77.5 mm. Relative humidity tolerance is 95 % at 55 °C.