Ground fault circuit interrupter (GFCI) with a secondary test switch contact protection
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United States of America Patent
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-
Feb 24, 2004
Grant Date -
Oct 10, 2002
app pub date -
Dec 31, 2001
filing date -
Feb 2, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A GFCI is provided that has secondary test switch contacts. In case closing of the primary test switch contacts fails to trip the GFCI, subsequent closing of the secondary test switch contacts results in a short circuit between the AC input terminals of the GFCI. The short circuit blows a fuse disposed on the line side of the GFCI. The blowing of the fuse disables the GFCI and/or provides an indication to the user that the GFCI is defective.
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