The Schneider Electric A9N26582 is an add-on residual current device (RCD) from the Acti9 Vigi xC60 range — a voltage-independent, electromechanical earth-leakage block that clips onto the downstream side of a compatible MCB or RCBO to add ground-fault protection. Two-pole (2P) construction, rated operational voltage 230…240 V AC at 50/60 Hz, insulation voltage 500 V AC, impulse withstand 6 kV.
Clip-on mount to DIN rail, 3 x 9 mm pitches wide (63 mm), depth 74.5 mm, height 87 mm. Occupies three modular spaces in the enclosure — factor that into your DIN-rail fill count before committing the BOM. Bottom tunnel terminals accept 1…25 mm² rigid (no cable end) or 1…16 mm² flexible with or without cable end; tighten to 2 N·m, strip 14 mm. Connection to the upstream MCB is by screws. IP20 (fingersafe) on the body; IP40 inside a modular enclosure.
