Pole for an electrical circuit breaker, equipped with an extinguishing chamber with dielectric shields
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United States of America Patent
Stats
-
Feb 19, 2002
Grant Date -
Jul 12, 2001
app pub date -
Jan 8, 2001
filing date -
Jan 7, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An electrical circuit breaker pole comprises a stationary contact means, a movable contact means, and an arc extinguishing chamber comprising two side flanges, separators, a front opening situated near to the contact zone of the stationary contact means, a lower arcing horn, an upper arcing horn and a pair of lateral dielectric shields laterally limiting the front opening of the chamber. Each lateral dielectric shield is arranged in such a way as to be interposed laterally between the separators and the movable contact means in the open position. The pair of lateral dielectric shields is arranged in such a way that the width of the opening of the chamber is appreciably smaller near to the upper arcing horn than pear to the lower arcing horn.
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