Breaking device for multipole electrical circuit breaker with multiple contacts
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United States of America Patent
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-
Oct 31, 1989
Grant Date -
N/A
app pub date -
Aug 17, 1988
filing date -
Aug 31, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An arc extinguishing chamber with plates, for a high-rating low voltage circuit breaker, interrupts an arc generated by a multiple contact system having a set of movable main contacts and a movable arcing contact cooperating with corresponding stationary contacts fixed onto a contact terminal. A lower arcing horn is fixed to the terminal by means of three screws with an insulating shield interposed. A pair of jaws with an inclined portion follows the outline of the plates up to the vicinity of intermediate arc catching ridges disposed symmetrically in relation to the center line passing through the V-shaped notch.
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