The A9V24363: The 63 A rated current matches the upstream MCB's frame — this add-on RCD is sized for the same branch, not for a downstream sub-feed. The 300 mA sensitivity is a common choice for protection against fire risk from earth faults in fixed equipment, rather than personnel shock protection (which typically uses 30 mA). Voltage-independent tripping means the RCD operates even if the neutral is lost or the supply voltage collapses — a reliability advantage in fault conditions. Instantaneous trip means no intentional time delay, so it coordinates with downstream RCDs only if those have a delay (Type S).
Clip-on mounting onto a DIN rail — the module snaps onto the right side of an iC60 MCB and connects electrically via screws. It occupies 7 x 9 mm pitches, so 63 mm of DIN rail width. IP20 body, IP40 within a modular enclosure — suitable for standard distribution boards, not washdown environments.
The A9V24363 carries an Active lifecycle status — it is current production, not subject to last-time-buy or phase-out. No official successor exists because none is needed.