The A9K24732 is a Schneider Electric Acti9 iK60N miniature circuit-breaker — a thermal-magnetic MCB rated 32 A at 30 °C, with a C curve (magnetic trip between 5 and 10 times In) and a 6000 A breaking capacity at 400 V AC, 50/60 Hz, conforming to EN/IEC 60898-1. This is a 3P+N unit — three protected poles plus a switched neutral pole on the left. The neutral pole is not thermally protected; it switches with the phase poles, so it's suited for distribution schemes where the neutral is solidly bonded upstream and only needs disconnection for isolation. The part carries isolation suitability per EN/IEC 60898-1, meaning it can be used as a disconnecting means for the downstream circuit when padlocked off.
The 9 mm pitch count of 8 means the breaker occupies 8 modules (72 mm width) on the rail — plan your enclosure fill accordingly. Height is 85 mm, depth 78.5 mm, so it fits most distribution boards without crowding the gland plate. Tunnel-type terminals accept 1 to 25 mm² rigid or 1 to 16 mm² flexible cable; strip 14 mm and tighten to 2 N.m. IP20 finger-safe front, but the terminals are live when wired — standard for distribution MCBs.