The Schneider Electric A9DG3710 is a 3P+N RCBO from the Acti9 iCV40 series, combining overcurrent protection and 30 mA earth-leakage protection in a single DIN-rail module. The 30 mA sensitivity means it trips on residual currents as low as 30 mA — the standard threshold for personal protection against electric shock in final circuits.
Connection pitch is 18 mm between phases, 9 mm between phase and neutral. Tunnel terminals accept 1–16 mm² rigid or 1–10 mm² flexible cable; strip 14 mm and tighten to 2 N·m. IP20 on the front, IP40 inside the modular enclosure.
