The Schneider Electric A9D41732 is an Acti9 DPN Vigi residual-current circuit breaker with overcurrent protection (RCBO) — a single module combining a 32 A thermal-magnetic MCB and a 300 mA earth-leakage detector in a 3P+N, 18 mm per-phase pitch package. The 32 A rated current (In) and C-curve magnetic trip (5–10 × In) mean it handles moderate inrush from motor or lighting loads without nuisance tripping, while the 300 mA sensitivity covers earth faults on circuits where 30 mA would cause unwanted trips — common for distribution sub-feeds or equipment with natural leakage. The limitation class 3 rating means it limits let-through energy enough to coordinate with upstream devices in a selective scheme.
Clip-on mounting on a DIN rail, 9 module pitches wide (90 mm). Neutral is on the left; tunnel terminals accept 0.75–16 mm² rigid or 0.33–10 mm² flexible conductors. The IP20 enclosure (IP40 in modular enclosure) suits clean indoor panels. Local signalling shows ON, OFF, and fault-trip status via the toggle. The toggle itself is the control type — no remote shunt trip or auxiliary contact built in, so plan for external indication if needed.