| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a vacuum circuit breaker capable of maintaining an insulation performance of a main circuit terminal and radiating heat of a conductor by air-tightly mounting an elastic resin having an insulation performance to a main circuit conductor by inserting a terminal cover. <P>SOLUTION: A vacuum circuit breaker includes: an insulation frame for supporting a vacuum valve having a fixed electrode and a movable electrode; a lower side main circuit terminal supported by the insulation frame and electrically connected with the movable electrode of the vacuum valve; and an upper side main circuit terminal supported by the insulation frame and electrically connected with the fixed electrode of the vacuum valve. Each of the lower side main circuit terminal and the upper side main circuit terminal is comprised of a main circuit conductor and a terminal cover comprised of an elastic resin having an insulation performance. <P>COPYRIGHT: (C)2012,JPO&INPIT |
