The Schneider Electric A9D61610 is an Acti9 iDPN Vigi residual-current circuit breaker with overcurrent protection (RCBO) — a single-module (36 mm wide) 1P+N device rated 10 A, C-curve, with integrated 30 mA earth-leakage protection. Breaking capacity is 6000 A Icn at 110…240 V AC, 50 Hz, certified to EN/IEC 61009-2-1. That rating covers the majority of domestic and light-commercial fault levels; for higher prospective short-circuit currents you would step to a higher-breaking variant.
Rated current 10 A with C-curve means the breaker holds 10 A continuously and trips instantaneously on a fault between 50 A and 100 A. That suits general-purpose socket circuits and lighting loads where inrush from small motors or LED drivers is moderate. The 30 mA residual sensitivity is the standard threshold for supplementary protection against electric shock in TN and TT systems. It also provides fire protection for circuits where the earth-fault impedance is low enough to sustain an arc below the overcurrent trip threshold. The 9 mm pitch between phase and neutral terminals is a standard Acti9 dimension — the busbar comb and plug-in accessories for the range fit without modification. Neutral is on the left, which matters when wiring a pre-bussed panel.
IP20 on the front (finger-safe) and IP40 inside the modular enclosure — standard for distribution boards. The toggle provides local ON/OFF/fault-trip indication; the fault-trip position is mechanically distinct from the OFF position, which helps during troubleshooting.