The A9P54325 is a 25 A, 3-pole C-curve miniature circuit breaker from the Schneider Electric Acti9 iC40N range. The 10 kA Icu at 400 V AC (EN/IEC 60947-2) is the industrial-grade breaking capacity; the 6 kA Icn (EN/IEC 60898-1) is the residential/commercial rating.
The 3-pole body occupies 6 × 9 mm pitches (54 mm wide), so it fits standard modular enclosure spacing. Tunnel terminals accept 1–16 mm² rigid or 1–10 mm² flexible, with a 2 N·m tightening torque and 14 mm strip length. That covers most panel-building wiring sizes without adapters.
Dual-certified to EN/IEC 60898-1 (domestic/commercial MCB) and EN/IEC 60947-2 (industrial circuit-breaker). That means it qualifies for both a residential consumer unit and an industrial panel — the installer picks the applicable standard. Limitation class 3 (energy let-through) per 60898-1, pollution degree 3 per 60947-2. Suitability for isolation is confirmed, with a contact position indicator and padlocking option. Quality marks include AENOR and OVE.