VACUUM SWITCHING TUBE WITH ANNULAR INSULATOR

摘要

In order to ensure that heavy short-circuit currents can be reliably switched in a small vacuum switching tube, the annular insulator (6) which, together with two cap-like metal components (5, 7), forms the housing of the vacuum switching tube, is arranged concentrically with the bellows (10) which, in turn, is soldered to the movable contact in the immediate vicinity of the contact member (2). In addition, there is a cap-like protective plate (9) open towards the switching section on the base of the movable contact member (2).