The Schneider Electric A9Q26225 is an Acti9 Vigi iC60 add-on residual current device (RCD) rated 25 A, 2-pole, Type A, with 500 mA sensitivity and instantaneous trip. It clips onto the right side of an Acti9 iC60 MCB via the plug-in connection, turning a standard branch breaker into a combined RCBO assembly — no extra wiring between the two units. The 27 mm width matches a single modular pitch on DIN rail, so it occupies one slot in the panel.
The 500 mA earth-leakage sensitivity suits equipment or fire protection on outgoing circuits. Type A detection catches pulsating DC fault currents. Voltage-independent tripping operates even if line voltage is lost. Insulation voltage is 500 V AC, and impulse withstand is 6 kV — enough for standard distribution environments.
Mounts via clip-on to DIN rail; the plug-in connection to the adjacent iC60 MCB handles the electrical link — no jumper wires needed. The bottom comb busbar is compatible, so you can feed a row of these from a common bus without individual ring terminals. IP20 on the body, IP40 inside a modular enclosure — standard for dry indoor panels.