The Schneider Electric A9R74263 is a 2-pole (2P) Acti9 iID residual current circuit breaker (RCCB) rated for 63 A continuous load at 220–240 V AC, 50/60 Hz. The voltage-independent tripping mechanism operates without an external power supply, so it clears a ground fault even if the line voltage collapses. Rated breaking and making capacity is 1500 A (Idm and Im), and the impulse withstand is 250 A per EN/IEC 61008-1. Pollution degree 3 suits it for industrial enclosures where conductive deposits may occur.
Terminal and environmental limits
The enclosure carries IP20 (finger-safe) and IP40 inside a modular enclosure — fine for a panel interior, but not rated for washdown. Storage range is -40 to 85 °C; operating range is -5 to 60 °C.
