The A9V16363 is a 3-pole add-on residual current device (RCD) from the Acti9 Vigi iC60 family, rated 63 A with 500 mA sensitivity, Type AC, instantaneous trip. The 63 A continuous rating matches the load current of a 3-phase outgoer — sized for a sub-distribution board feeding lighting or general-purpose socket circuits. The 500 mA earth-leakage threshold is not personnel protection (30 mA is the touch-safety limit); this is equipment-protection level, used where a higher leakage floor is tolerable to avoid nuisance tripping on long cable runs or equipment with natural leakage. Voltage-independent tripping means the RCD operates without needing a control supply — it uses the fault energy itself, so it works even if the neutral is lost upstream.
Deployment context
Occupies 7 x 9 mm pitches, so 63 mm of DIN width. Terminal tunnel accepts 1…35 mm² rigid or 1…25 mm² flexible; tighten to 3.5 N·m bottom. Wire strip length 14 mm. Comb busbar compatible from the bottom.