The Schneider Electric A9KF71106BQ is a 1-pole miniature circuit breaker from the Acti9 K60 series, rated at 6 A with a C-curve trip characteristic. It provides overcurrent and short-circuit protection for AC distribution circuits, with a breaking capacity of 10 kA Icn at 240 V AC per EN/IEC 60898-1.
The C-curve means the magnetic trip operates at 5 to 10 times the rated current (30 to 60 A), so it holds through the inrush of a small motor or a bank of fluorescents without nuisance tripping, but clears a hard short quickly. The 10 kA breaking capacity at 240 V AC tells you it can safely interrupt a fault current up to 10,000 A — sufficient for most residential and light commercial panelboards where the prospective short-circuit current stays under that level.
Occupies 2 modules of 9 mm pitch (18 mm total width), so it takes two adjacent slots. The tunnel terminals accept 1 to 25 mm² rigid or 1 to 16 mm² flexible cable; strip 14 mm and tighten to 2 N·m.