Seal pole for PT cabinet

The invention discloses a seal pole for a PT cabinet. The seal pole comprises three separate three-phase pole bodies of A, B and C. The pole bodies seal a vacuum interrupter. One side of the vacuum interrupter is sealed with a first copper busbar. One side of the first copper busbar is provided with a horn-shaped cavity. The first copper busbar is connected electrically with the vacuum interrupter. The product ensures excellent arc extinguishing performance, protects conductive parts from external impacts, can also reduce the influence on the environment, improves the insulation performance and the reliability of a switch, and improves the electrical safety of users.