The Schneider Electric A9F68310 is a 10 A, C-curve miniature circuit breaker from the Acti9 iT60 series, built for distribution boards where you need thermal-magnetic protection on a 3-pole AC/DC circuit. The 10 A rating sets the continuous current it carries without tripping; the C curve means magnetic trip occurs at 5 to 10 times rated current — 8 x In +/-20 % per the spec — so it handles moderate inrush from small motors or transformers without nuisance trips. Breaking capacity is the real differentiator here: 36 kA Icu at 133 V AC, 20 kA at 240 V, 10 kA at 415 V, and 6 kA at 440 V. That 10 kA at 415 V covers most European industrial panel fault levels; the 6 kA at 440 V is worth noting if your line runs 440 V three-phase — it's lower than the 415 V figure, so verify your prospective short-circuit current at that voltage.
The removable comb busbar is pre-installed, so you can daisy-chain phases across adjacent breakers without extra wiring. Terminals accept 1 to 25 mm² rigid or 1 to 16 mm² flexible; strip length is 14 mm, torque to 2 N·m. IP20 finger-safe for enclosed panels.