Electrical switchgear
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United States of America Patent
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Mar 17, 2009
Grant Date -
Mar 1, 2007
app pub date -
Aug 31, 2006
filing date -
Aug 31, 2005
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electrical switchgear includes a thermal trip, an electromagnetic trip, and a switching mechanism with a latching point and at least one contact point that is continuously opened or closed. An operating handle is connected to one end of a lug by means of a coupling element and the other end of the lug is coupled to a contact base that carries a moving contact member. The thermal trip is coupled to a trip lever by a connecting rod that passes over the contact base so that both the thermal trip and the electromagnetic trip open a latching point in the event of an excess current and/or short circuit current.
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