The Schneider Electric A9KR14263BQ is an Acti9 ID K residual current circuit breaker (RCCB) — a 2-pole, 63 A, 300 mA sensitivity Type AC device for 220–240 V AC 50 Hz networks.
63 A rated current (In) and 300 mA earth-leakage sensitivity define the load and protection envelope. Type AC (sinusoidal AC residual currents only) and instantaneous time delay mean it trips on pure AC leakage without intentional delay. That is standard for general-purpose RCCB duty; it is not suitable for pulsating DC or smooth DC residual currents (those need Type A or Type B). Rated breaking and making capacity Idm 630 A / Im 630 A covers the short-circuit withstand for a 63 A device in a domestic or light commercial panel. The voltage-independent tripping technology means it operates even if the supply voltage is lost — the coil is not powered during normal running.
Clip-on DIN rail mount, 36 mm wide (4 x 9 mm pitches), 81 mm high, 68 mm deep. Neutral on the left. Terminals accept 1–35 mm² rigid or 1–25 mm² flexible conductors top and bottom; strip length 14 mm, tightening torque 3.5 N.m. IP20 on the device body, IP40 inside a modular enclosure. That depth (68 mm) fits standard shallow consumer units and panel enclosures — no extra depth clearance needed beyond the usual 80–100 mm backbox.
Listed as current production. Certified to IS 12640-1 and EN/IEC 61008-1/2-1.