The Schneider Electric A9K23325 is a 3-pole miniature circuit breaker from the Acti9 iK60 series, rated 25 A at 30 °C with a B tripping curve (magnetic trip between 3 and 5 times In). The B curve means it's sized for resistive and general-purpose loads — lighting, small transformers, control circuits — where inrush is modest and you want fast clearing on short circuits. The 6 kA breaking capacity at 400 V AC (Icn per EN/IEC 60898-1) tells you it can safely interrupt a fault up to that level on a 400 V three-phase network; for most domestic and light commercial distribution boards that's adequate, but if your prospective short-circuit current exceeds 6 kA you step up to an iC60 or a higher-rated series. The thermal-magnetic trip unit combines a bimetal strip for overload protection and a solenoid for short-circuit protection.
The 3-pole body takes 6 module pitches (9 mm each, so 54 mm total width). Depth is 78.5 mm, height 85 mm. IP20 front face — fine for enclosed panels, not for washdown environments.
What compliance documentation is available
The manufacturer provides a Declaration of Conformity covering the applicable directives; RoHS and REACH compliance data is published in the product environmental profile. No UL or CSA listing is cited on this variant — it's designed for IEC-market panels.