The Schneider Electric A9D73625T is a 1P+N residual current breaker with overcurrent protection (RCBO) from the Acti9 ISPN Vigi range, combining a 25 A thermal-magnetic MCB (C-curve, 5–10× In magnetic trip) with integrated 30 mA earth-leakage protection in a single 18 mm wide module. The C-curve characteristic (5–10× In magnetic trip) suits inductive loads like small motors, fluorescent lighting banks, and transformer-fed circuits where inrush current exceeds the B-curve threshold.
Clip-on mounting to DIN rail or chassis, 18 mm width (2× 9 mm pitches), occupies a single modular slot in the distribution board. Neutral on the left, tunnel-type terminals accept 1–25 mm² rigid upstream and 1–16 mm² rigid downstream; flexible cable capacity is 1–16 mm² upstream and 1–10 mm² downstream. Wire stripping length is 14 mm upstream, 13 mm downstream. Tightening torque: 3.5 N·m upstream, 2 N·m downstream. Padlockable with Ø 4 mm padlock for lockout/tagout.
Compliant with AS/NZS 61009.1, the Australian/New Zealand standard for RCBOs. Electrical durability 6000 cycles, mechanical durability 10000 cycles — typical for a 25 A residential-grade RCBO. Limitation class 3 (energy limiting) for downstream cable protection.