A voltage-dependent resistor used for transient voltage suppression in electrical circuits.
A Metal Oxide Varistor (MOV) is an electronic component with nonlinear resistance characteristics, primarily composed of zinc oxide and other metal oxides. It functions as a voltage-clamping device that protects sensitive electronic equipment from voltage spikes and transient surges by rapidly decreasing its resistance when the voltage exceeds a specific threshold, thereby diverting excess current away from the protected circuit.
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An MOV can last 5-10 years under normal conditions, but degrades with each surge event; it should be replaced after significant surges or as part of preventive maintenance.
Yes, MOVs are suitable for both AC and DC applications, with specifications adjusted for the specific voltage and current requirements.
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