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What is a thermally protected varistor?

April 26, 2017protected Thermally varistor

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What is a thermally protected varistor?

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A thermally protected varistor is surge protection component that has an integral (or nearby) thermal fuse. This thermal fuse disconnects a varistor that is dissipating power (heating up) beyond its maximum allowable power rating, usually long before the component becomes a short circuit across the power line. Varistors with integral thermal fuses ensure that should a varistor failure occur, it will be a benign one.