The A9D77425 is a 4-pole Acti9 iC60 RCBO — a combined overcurrent and residual-current device for final distribution circuits. It carries a 25 A rated current (In) on a C-curve magnetic trip (5...10 x In), with integrated 30 mA earth-leakage protection on all four protected poles. The breaking capacity is 6 kA Icn at 380...415 V AC 50 Hz per EN/IEC 61009-2-1, and 6 kA Icu per EN/IEC 60947-2. That means it handles both overload and ground-fault in one 72 mm wide module — saves a pole position in the panel vs separate MCB+RCCB. The toggle gives local ON/OFF/fault-trip indication. IP40 in the distribution enclosure, IP20 at the terminals — standard for panel-mount gear, not for outdoor or washdown.
Installation and integration notes
Mounts on DIN rail via clip-on. The 9 mm connection pitch between poles matches standard Acti9 busbar spacing. Tightening torque 2 N.m on the tunnel terminals; strip 12 mm for top or bottom connection. Rated for overvoltage category III per IEC 60364 — suitable for sub-distribution boards. Electrical durability 10,000 cycles, mechanical 20,000 cycles. Tropicalisation class 2 handles 95% RH at 55 °C.