The Schneider Electric A9V16325 is an add-on residual current device (RCD) from the Acti9 Vigi iC60 family, designed to clip onto the outgoing side of an iC60 MCB to provide earth-leakage protection for the downstream circuit. Rated 25 A continuous, it handles a 230…415 V AC 50/60 Hz network across three poles, with a 500 mA AC-type earth-leakage sensitivity and instantaneous trip — meaning it clears a ground fault the moment leakage exceeds that threshold, with no intentional delay. The residual current tripping is voltage-independent, so it still operates even if the line voltage collapses during a fault — a key reliability point for safety circuits.
Clip-on mounting to DIN rail, 54 mm wide (6 x 9 mm pitches), 91 mm tall, 73.5 mm deep — fits standard Acti9 comb busbars on the bottom side, and the tunnel-type terminals accept 1…25 mm² rigid or 1…16 mm² flexible conductors with or without ferrules. IP20 on the device body, IP40 inside a modular enclosure per IEC 60529 — suitable for dry indoor panel environments, not washdown or outdoor exposure. Tightening torque 2 N.m on the bottom terminals; strip length 14 mm for bottom connection.
Compliant with EN/IEC 61009-1 and EN/IEC 61009-2-1 (RCBO standard for household and similar installations), plus IEC 60947-2 for the insulation and impulse withstand ratings. Rated insulation voltage 500 V AC, impulse withstand 6 kV, pollution degree 3 per IEC 60947-2 — meaning it's rated for industrial environments where conductive pollution or condensation may occur. 8/20 µs impulse withstand of 250 A per IEC 61009-1 for electromagnetic compatibility — handles typical surge events without nuisance tripping.
The A9V16325 is classified as Obsolete by the manufacturer per the lifecycle record. If your design can accommodate a parametric substitute (different sensitivity, delay, or brand), a cross-reference search against the Acti9 range or equivalent DIN-rail RCDs is worth running — but there is no single pin-for-pin drop-in listed as a direct replacement.