Residual current circuit breaker for group incomer duty
The Schneider Electric A9KR13263S is a 2-pole residual current circuit breaker (RCCB) from the Acti9 ID K series, rated 63 A with 30 mA earth-leakage sensitivity, Type AC, for 220-240 V AC 50 Hz networks. The 30 mA sensitivity covers general-purpose personnel protection against direct and indirect contact per EN/IEC 61008-1. Type AC detection means it trips on sinusoidal residual currents — the standard choice for domestic and commercial final circuits where non-sinusoidal waveforms are not expected. Rated breaking and making capacity is Idm 630 A / Im 630 A, and the unit is voltage-independent — the tripping mechanism does not rely on the mains voltage to operate, so protection remains active even if the neutral is lost upstream.
Terminals accept up to 35 mm² rigid or 25 mm² flexible conductors, with a stripping length of 14 mm and tightening torque of 3.5 N.m. IP20 on the body, IP40 inside the modular enclosure — suitable for clean, dry indoor panels.