Vacuum interrupter with a ceramic body and at least one shielding element, and method for producing the same

A method for assembling a shielding inside a vacuum interrupter, comprising:

• providing a ceramic body;
• providing at least one tubelike inner shielding, which is located around an area of a fixed contact and a movable contact, the ceramic body being vacuum tightly closed at both ends with metal caps;
• providing the ceramic body at its inner surface with a diameter reducing integrated collar;
• and
• providing the shielding is provided with complementary outer bulges or convexities in its structure,
• wherein the shielding is positioned against one side of the integrated collar, and is fixed in that position at an opposed side of the collar with a ring formed countering element, and
• wherein after assembling the ring formed countering element, the vacuum interrupter is treated by a brazing process, such that after the brazing process the metal parts tends to shrink more than the ceramic body in such that the shielding exactly fits to its final position at the integrated collar inside the ceramic body of the vacuum interrupter.