The Schneider Electric A9V24425 is an Acti9 Vigi iC60 add-on residual current device (RCD) — a 4-pole, 25 A, 300 mA Type A earth leakage block that clips onto the outgoing side of a compatible iC60 MCB. Voltage-independent tripping means it operates without needing a separate power supply to the electronics; the fault current itself drives the mechanism. Rated operational voltage is 400 V AC at 50/60 Hz, with an insulation voltage of 500 V AC and impulse withstand of 6 kV per IEC 60947-2. Pollution degree 3 rated, so it handles the conductive deposits typical in industrial control panels.
This order code is marked obsolete by the manufacturer.
Mounts via clip-on onto a DIN rail, occupying 6 x 9 mm pitches (54 mm width). The bottom tunnel terminals accept 1…25 mm² rigid cable or 1…16 mm² flexible (with or without ferrule), tightened to 2 N·m. The add-on block screws directly to the adjacent iC60 MCB — no extra wiring between the two devices. IP20 rated (finger-safe), IP40 inside a modular enclosure. Trip indicator provides local visual signalling of a residual current event.
Compliant with EN 61009-1 and IEC 61009-1 for RCBOs (combined MCB/RCD standards). The 8/20 µs impulse withstand rating of 250 A per IEC 61009-1 confirms it survives surge events without nuisance tripping. Ambient operating range is -25…60 °C; storage range -40…85 °C.