OVERVOLTAGE PROTECTION DEVICE WITH VARISTORS
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United States of America Patent
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Issued Date -
Feb 21, 2019
app pub date -
Aug 16, 2018
filing date -
Aug 16, 2018
priority date (Note) -
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Abstract
The invention relates to an overvoltage protection device with varistors, wherein a first varistor and a second varistor are connected in series, wherein the first varistor has a thermal disconnector, wherein the first varistor has a lower operating voltage than the second varistor, and wherein the first varistor has a lower energy absorption capacity than the second varistor, with the first varistor heating up more in the event of an overload and thereby causing the thermal disconnector to disconnect.
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