Patent ID: 8350169

Claim:
A three-positions disconnector for a three-phase system, characterized in that it comprises, for each phase: an insulating casing which comprises a first cavity and a second cavity separated by an insulated partition wall, a through hole being present in said partition wall between said first and second cavity; a first fixed contact suitable for ground connection; the first cavity housing: a second fixed contact electrically connected to a corresponding branch conductor of a bus-bar system; at least a portion of a movable contact pivotally mounted on a support positioned in said first cavity, said support extending through said hole to form a first electrical terminal, said movable contact being electrically connected to a first electrical terminal; the second cavity housing said first electrical terminal; the disconnector also comprising an operating mechanism and a kinematical chain linking said movable contact with said operating mechanism, said movable contact being movable between a first position in which it is coupled to said second fixed contact, a second position in which it is isolated from both said second and first fixed contacts, and a third position in which it coupled to said first fixed contact.