The Schneider Electric A9K02263 is a 2-pole miniature circuit-breaker from the Acti9 K60 range, rated 63 A with a C-curve trip characteristic. It breaks 6 kA at 400 V AC per EN/IEC 60898-1, which covers most residential and light commercial distribution boards — the 6 kA rating is the standard for final subcircuits in a TN or TT system, so it coordinates downstream without requiring a higher-rated upstream device.
Tightening torque is 3.5 N.m, and the wire strip length is 14 mm for both top and bottom connections. The 36 mm width (2 x 9 mm pitches) fits a standard 2-module slot in a distribution board.
Electrical durability is 10,000 cycles, mechanical 20,000 cycles, and it operates at altitudes up to 2,000 m without derating.