The Schneider Electric A9K23432 is a 4-pole miniature circuit-breaker (MCB) from the Acti9 iK60N series, rated 32 A at 30 °C with a B-curve trip characteristic (magnetic trip between 3 and 5 times In). That B-curve means it's sized for resistive and light inductive loads — lighting, small heaters, general-purpose distribution — where inrush isn't severe. The thermal-magnetic trip unit combines a bimetal strip for overload protection and a solenoid for short-circuit response.
The 4-pole format occupies the full width; plan your enclosure rail space accordingly — 8 x 9 mm = 72 mm, leaving no room for a half-module neighbour. Tunnel-type terminals accept 1…25 mm² rigid or 1…16 mm² flexible cable; tighten to 3.5 N·m. The toggle provides local ON/OFF indication; a padlocking device can be fitted for lockout/tagout.
