The Schneider Electric A9D16816 is an Acti9 IKQE RCBO — a combined residual current breaker with overcurrent protection in a 1P+N format, rated 16 A at 50 °C with a 10 mA earth-leakage sensitivity and a 10 kA Icn breaking capacity at 230 V AC. The thermal-magnetic trip unit handles both overload and short-circuit curves, with a C-curve characteristic.
The 118 mm height and 82 mm depth fit standard distribution board cutouts. Tunnel-type terminals accept 1–16 mm² rigid cable or 1–10 mm² flexible with or without ferrules; the tightening torque is 2 N·m for the power circuit. Wire stripping length is 13 mm for top or bottom connection. Neutral is on the left.