The A9Q54325 is a 3-pole add-on residual current device (RCD) from the Acti9 Vigi iC60 range, rated 25 A with 300 mA sensitivity and Type A earth-leakage protection. It clips onto the DIN rail alongside the matching iC60 MCB and plugs in electrically — no additional wiring between the two devices. The 73.5 mm depth keeps the assembly within the standard modular enclosure footprint (6 x 9 mm pitches).
This part is obsolete per the manufacturer. No official successor order code is listed, so a parametric cross-reference (same 3P, 25 A, 300 mA, Type A, instantaneous, Acti9 Vigi iC60 family) is the practical path for a like-for-like swap.
Mounts via clip-on to DIN rail. The IP20 body (IP40 in modular enclosure) suits panel-internal installation — not washdown or outdoor duty.
The voltage-independent residual current tripping technology means the RCD detects earth faults even if the phase voltage is lost — a useful safety margin on outgoing circuits. Impulse withstand is 250 A (8/20 µs waveform) per IEC 61009-1. The trip indicator gives local visual confirmation of RCD operation.
