VERTICAL ONE-POINT DISCONNECTOR

PROBLEM TO BE SOLVED: To provide a vertical one-point disconnector that always stops at substantially vertical position of a blade inverted position. SOLUTION: In this disconnector, a blade 3 is mounted over a rotation insulator 1 via a knuckle joint mechanism 2, and a fixed contact part 4 is provided abutting to or separating from the blade 3. Rotation of the rotation insulator 1 causes the blade 3 to be projected and twisted via the knuckle joint mechanism 2, and the blade 3 abuts to or separates from the fixed contact part 4 to perform an opening/closing operation. In this case, a round-bar-shaped stable bar 5 is provided at the tip of the blade 3, an inserting direction of the blade 3 is opened in the upper part of the fixed contact part 4, a pair of stable plates 6 are faced to each other in an interval shorter than a diameter of the stable bar 5. In a route closing operation, before the blade 3 abuts to or is grabbed by the fixed contact part 4, the stable bar 5 slidably abuts to the stable plates 6 to absorb an inertia force of the blade 3.