It combines a C-curve thermal-magnetic MCB and a 30 mA earth-leakage module in a single 18 mm wide unit that clips onto a DIN rail.
The 25 A rated current (In) and C-curve magnetic trip (5 to 10 x In) mean this RCBO handles general-purpose loads like lighting, socket outlets, and small appliances that produce moderate inrush — the C curve is the standard choice for mixed resistive-inductive circuits in commercial fit-outs. The 30 mA earth-leakage sensitivity provides personal protection against direct contact, meeting the threshold required by most wiring regulations for socket circuits. The limitation class 3 rating means the device limits let-through energy under fault, reducing stress on downstream wiring. The tunnel-type terminals accept ferruled stranded as well; strip length is 13 mm downstream and 14 mm upstream. Mechanical durability is 10 000 cycles, electrical durability 6 000 cycles.
Width is 18 mm (2 x 9 mm pitches). IP20 rated, so suitable for enclosure interiors but not washdown zones. Provision for padlocking with a 4 mm padlock for lockout/tagout during maintenance.
Certified to AS/NZS 61009.1, the Australian/New Zealand standard for RCBOs. The Acti9 range is Schneider Electric's current-generation DIN-rail protection platform, so this part carries the manufacturer's standard warranty and technical support. Pollution degree 2, tropicalisation class 2.