The A9F45425 is a Schneider Electric Acti9 iC60N miniature circuit breaker — 4 poles, 25 A rated current, D curve, thermal-magnetic trip. Breaking capacity reaches 36 kA Icu at 12…133 V AC, 20 kA at 220…240 V, and 10 kA at 380…415 V (all per IEC 60947-2); under IEC 60898-1 it carries 10 kA Icn at 415 V. That dual rating means it qualifies for both industrial (60947-2) and residential/commercial (60898-1) installations — useful when a panel crosses classification boundaries. Terminal accepts 1…25 mm² rigid or 1…16 mm² flexible; torque to 2 N·m. The 78.5 mm depth keeps it flush with other Acti9 devices in a row — no overhang on the enclosure door.
Snap-on DIN-rail mounting inside a distribution board or industrial control panel. The 4-pole configuration handles three-phase plus neutral (or three-phase switched with a fourth pole for an additional phase). Pollution degree 3 (conductive pollution, typical in industrial enclosures) and tropicalisation class 2 per IEC 60068-1 mean it tolerates humidity up to 95 % at 55 °C without derating — suited for non-conditioned plant rooms or outdoor-rated enclosures.
Coordination and selectivity note
The separate earth-leakage block (Vigi iC60) clips onto the same busbar stack if ground-fault protection is required, without changing the breaker footprint.