The Schneider Electric A9F68206 is a 6 A, C-curve, 2-pole miniature circuit breaker from the Acti9 iT60 series, designed for distribution in final-subdivision panels. Its thermal-magnetic trip unit handles overloads and short-circuits, with a magnetic tripping threshold of 8 × In ±20 % — meaning it holds through moderate inrush but clears fast on a hard fault. The 36 mm width takes up two standard 18 mm pitches on a DIN rail, so it fits a 4-module space.
The breaking capacity varies with voltage: 36 kA Icu at 12…133 V AC, 20 kA at 220…240 V, 10 kA at 380…415 V, and 6 kA at 440 V. At 400 V it also carries a 10 kA Icn under EN/IEC 60898-1. For a 6 A MCB in a 230/400 V panel, the 20 kA at 240 V and 10 kA at 400 V are the figures that govern selectivity with an upstream device — the limitation class 3 means it lets through less energy, easing coordination.
The removable comb busbar allows daisy-chaining phases across multiple breakers without extra wiring. Terminals accept 1…25 mm² rigid or 1…16 mm² flexible; strip length 14 mm, torque to 2 N·m.