Operating mechanism of a multipole electrical circuit breaker
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United States of America Patent
Stats
-
Sep 12, 1995
Grant Date -
N/A
app pub date -
Mar 30, 1994
filing date -
Apr 20, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An operating mechanism of a multipole circuit breaker comprises a toggle associated with an automatic tripping hook and an operating handle cooperating with a pivoting locking lever arranged to block the handle in an intermediate position in case of welding of the contacts. When normal opening of the contacts takes place, the locking lever comprises a radiating bearing surface cooperating with a protuberance of the bar to keep holding the locking lever in the first active position of the stop, during a first part of the opening travel of the movable contact of each pole, and a notch for receiving said protuberance causing unblocking of the locking lever to release the base close to the end of opening travel of the movable contact.
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