The Schneider Electric A9D72610 is an Acti9 iDPN Vigi residual-current circuit breaker with overcurrent protection (RCBO) — a single-module device combining a 10 A thermal-magnetic MCB and a 100 mA earth-leakage detector in one 1P+N package. The C-curve (magnetic trip 5–10 x In) means it handles moderate inrush from small motors or lighting ballasts without nuisance tripping, while the 100 mA sensitivity catches ground faults on circuits where 30 mA would be too tight for leakage from long cable runs or industrial heaters. Breaking capacity is 6 kA Icn at 230 V AC per EN/IEC 61009-2-1 — enough for most final subcircuits in a distribution board where the upstream device limits fault current. The limitation class 3 rating means it lets through less energy during a short-circuit than a standard breaker, which helps with downstream equipment protection.
Clip-on mounting on DIN rail, 36 mm wide (4 x 9 mm pitches), neutral on the left. The 73 mm depth leaves clearance behind a standard 100 mm deep enclosure. Terminals accept up to 16 mm² rigid or 10 mm² flexible, with a 2 N.m torque spec and 15 mm strip length — standard for a 10 A device. IP20 on the body, IP40 inside a modular enclosure; pollution degree 3 means it's rated for industrial environments where conductive dust or condensation is present.