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no date - (R)B.P. Baker and (L)L.R. Ludwig inspect a moving contact arm on a new 15,000 volt compressed air circuit breaker

DEVELOPERS OF HIGH POWER ARC BREAKER

CD 2487097 E&MP15.016

Electric Circuits, Breakers

no date

B.P. Baker, Westinghouse development engineer, left, and L.R. Ludwig, manager of the Company's air circuit breaker engineering, inspect a moving contact arm on a new 15,000 volt compressed air circuit breaker, capable of interrupting an arc of 1,500,000 kilovolt-amperes. 


Original Caption by Science Service
Westinghouse



National Museum of American History

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