The Schneider Electric A9F18325 is an Acti9 iC65N miniature circuit breaker — 3-pole, 25 A rated current at 30 °C, C-curve magnetic trip (5 to 10 x In), and a 6 kA breaking capacity at 400 V AC per IEC 60898-1.
DIN-rail fit and panel integration
Clip-on mounting to a standard DIN rail, 6 x 9 mm module pitches wide (54 mm total). Depth is 78.5 mm, height 94 mm — that's a compact footprint for a 3-pole breaker. Tunnel terminals top and bottom accept 1 to 25 mm² rigid cable or 1 to 16 mm² flexible, with a tightening torque of 2.5 Nm. Strip length 14 mm. IP20 finger-safe front; pollution degree 3 rated, so it handles conductive dust in unsealed panels. Overvoltage category IV means it's designed for the main incoming supply side, not just sub-distribution.
Certified to IEC 60898-1 and GB 10963.1. Suitability for isolation marked (yes), with a visible contact position indicator. Limitation class 3 means it limits let-through energy well for downstream equipment protection. Separate earth-leakage protection block can be added alongside.