Varistor is a voltage

Varistor is a voltage limiting protection devices. Nonlinear characteristic use varistors, when an overvoltage occurs between two poles varistor varistor voltage can be clamped to a relatively fixed voltage value, metal oxide arrester in order to achieve protection of the post-stage circuit. The main parameters of mov metal oxide varistor are: varistor voltage, current capacity, junction capacitance and response time.