It is {HEAD ~ the object} of {TAIL ~ the present invention} to provide a vacuum circuit breaker having highly reliable electrodes which exhibit little deformation with the lapse of time, as well as a vacuum valve for use in the vacuum circuit breaker, an electric contact for use in the vacuum valve and a method for making the electric contact 
It is { HEAD ~ the object } of { TAIL ~ the present invention } to provide a vacuum circuit breaker having highly reliable electrodes which exhibit little deformation with the lapse of time , as well as a vacuum valve for use in the vacuum circuit breaker , an electric contact for use in the vacuum valve and a method for making the electric contact
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