The Schneider Electric A9P42640 is a 1P+N miniature circuit-breaker from the Acti9 iC40 series, rated 40 A with a B tripping curve.
Breaking capacity and standards
Rated breaking capacity is 6 kA Icu at 230 V AC per EN/IEC 60947-2, and 4500 A Icn at 230 V AC per EN/IEC 60898-1. The dual rating means the same MCB meets both the industrial (60947-2) and residential/commercial (60898-1) standards — useful when a panel must satisfy both a national wiring code and an industrial specification. Limitation class 3 per 60898-1 means it limits let-through energy enough to protect downstream equipment in most fault scenarios.
The A9P42640 carries a current-production lifecycle status. No successor has been announced — this is the active catalog number for the 40 A B-curve 1P+N iC40 variant.
Tunnel terminals accept 1 to 16 mm² rigid or 1 to 10 mm² flexible copper; strip length 14 mm, tightening torque 2 N·m. Neutral is on the left, protected pole on the right. IP20 finger-safe front; IP40 inside an enclosed modular enclosure.
