The Schneider Electric A9V35363 is a Vigi iC60 add-on residual current device (RCD) from the Acti9 range. It's a voltage-independent, 3-pole block that clips onto the bottom of an iC60 MCB to add earth-leakage protection. The 63 A rated current and 300 mA sensitivity with Type A-SI (Super Immunised) characteristic mean it handles high inrush or pulsed DC earth faults common on VFD-fed or electronically ballasted circuits without nuisance tripping — the SI designation gives it a selective time delay, so it coordinates with downstream RCDs and lets the closest device clear a fault first.
Clip-on mounting to DIN rail (7 x 9 mm pitches wide) — mates to the bottom of an iC60 MCB via screw terminals. The 73.5 mm depth and 117 mm width fit a standard modular enclosure; the IP20 body (IP40 inside a modular enclosure) is fine for dry indoor panels. Bottom tunnel terminals accept 1 to 35 mm² rigid cable or 1 to 25 mm² flexible, with a 3.5 N·m tightening torque and 14 mm strip length.
Electrical ratings and compliance
Rated operational voltage 230...415 V AC, 50/60 Hz, with a rated insulation voltage of 500 V AC and impulse withstand of 6 kV per IEC 60947-2. The 8/20 µs impulse withstand of 3000 A per IEC 61009-1 means it survives surge events without damage. Standards: EN/IEC 61009-1 and EN/IEC 61009-2-1.