The Schneider Electric A9F68306 is a 6 A, 3-pole miniature circuit-breaker from the Acti9 iT60 range, carrying a C curve for moderate inrush loads like small motors or lighting circuits. Rated insulation voltage is 500 V AC, and the breaking capacity reaches 36 kA Icu at 133 V AC, stepping down to 10 kA at 400 V AC under the 60947-2 standard. The thermal-magnetic trip unit has a magnetic threshold of 8 x In ±20%.
At 220–240 V AC the rating drops to 20 kA, and at 380–415 V AC it holds at 10 kA — sufficient for most European low-voltage distribution panels. The limitation class is 3, meaning it limits let-through energy effectively for downstream equipment protection.
Snap-on DIN rail mounting per EN/IEC 60715. The 54 mm width (6 x 9 mm pitches) occupies three modular spaces in the panel. Terminals accept 1–25 mm² rigid or 1–16 mm² flexible wire; tightening torque is 2 N·m. The removable comb busbar is pre-installed for daisy-chaining phases.