The Schneider Electric A9K23120 is an Acti9 iK60N miniature circuit breaker rated 20 A at 30 °C with a B tripping curve, meaning the magnetic release operates between 3 and 5 times the rated current — suited for protecting resistive and general-purpose loads where inrush is low, such as lighting circuits or socket outlets in residential and commercial distribution boards. Rated breaking capacity is 6000 A Icn at 230 V AC 50/60 Hz per EN/IEC 60898-1, so it safely interrupts fault currents up to that level without upstream damage in a standard 6 kA installation. The 1-pole unit clips onto a DIN rail (mounting support: DIN rail, clip-on), occupies 2 x 9 mm pitches (18 mm wide), and is IP20 rated — suitable for enclosed distribution panels where accidental finger contact is prevented by the enclosure door.
Integration notes
Terminals accept rigid cable up to 25 mm² (flexible up to 16 mm²) with a tunnel-type connection; tighten to 2 N·m. Strip 14 mm of insulation for top or bottom connection. The toggle actuator provides local ON/OFF indication, and a padlocking device can be fitted for lockout/tagout.