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Varistor Voltage for TNR™ Ceramic Varistors

Select a varistor voltage between wire and ground of 431K (430V) or more for TNR™ Ceramic Varistors.
For wire-to-ground voltages, compared to wire-to-wire, it is necessary to consider damage due to overvoltage from things such as ground faults. Even for devices used with a working voltage of 100V AC, use a varistor voltage of 431K (430V) for the varistor between the wires and ground. Also, remove the varistor when performing withstand voltage tests for the device. The varistor leakage current may cause an error.

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