470K/7D MOV (Metal Oxide Varistor) 5 pcs

The MOV-07DxxxK Series of 7 mm radial leaded varistor devices protects against overvoltage transients such as lightning, power contact and power induction. The metal oxide varistors offer a choice of varistor voltages from 18 V to 820 V and Vrms voltages from 11 V to 510 V. The devices have a high current handling, high energy absorption capability and fast response times to protect against transient faults up to rated limits. Current Energy and Power Dissipation RatingsShould transients occur in rapid succession, the average power dissipation is the energy (watt-seconds) per pulse times the number of pulses per second. The power so developed must be within the specifications shown on the Device Ratings and Specifications Table for the specific device. The operating values of a MOV need to be derated at high temperatures as shown above. Because varistors only dissipate a relatively small amount of average power they are not suitable for repetitive applications that involve substantial amounts of average power dissipation Varistor VoltageThe voltage between two terminals with the specified measuring current 1mA.DC applied is call Vb.To meet the specified value Maximum AllowableVoltageThe recommended maximum sine wave voltage (RMS) or the maximum DC voltage can be applied continuously.Rated WattagetThe maximum average power that can be applied within the specified ambient temperature. IEnergy The maximum energy within the varistor voltage change of ±10% when one impulse of10/1000μsec. or 2 msec. is applied.Withstanding SurgeCurrentThe maximum current within the varistor voltage change of ±10% with the standard impulse current (8/20μsec.) applied one time