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Surge Suppression

PPM can provide MOVs for high power and high voltage AC & DC applications, these devices will extended the lifetime of the critical components.

  • A Varistor (or voltage-dependant resistor) is a component that varies its electrical resistance as the applied voltage changes. At low voltage they have a high electrical resistance and at high voltage a low electrical resistance. In a system they are ideal for diverting surge voltages and spikes away from critical components.
  • Metal Oxide Varistors (MOVs) are madeĀ from zinc oxide and other metal oxides placed between two metal plates or contacts. The functions and applications of these components are similar to standard varistors.

Browse the tables below to find a suitable product or call us on 01793 784389 to discuss your requirement.

Metal Oxide Varistors

 Maximum Continuous Operating VoltageVaristor VoltageEnergy RatingMaximum CurrentMaximum Clamping Voltage
Surface Mount MOVs8 - 300 VAC (11 - 385 VDC)15 - 470 V0.4 - 25 J0.2 - 1.2 kA28 - 775 V
Radial Lead MOVs11 - 1000 VAC (14 - 1465 VDC)18 - 1800 V0.6 - 725 J0.1 - 20 kA40 - 2970 V
Tab Lead MOVs130 - 1000 VAC (170 - 1350 VDC)205 - 4230 V100 - 3500 J10 - 70 kA325 - 2800 V
Case MOVs130 - 2800 VAC (170 - 3500 VDC)205 - 4700 V210 - 7000 J25 - 100 kA340 - 7400 V
Encapsulated MOVs130 - 660 VAC (175 - 850 VDC)200 - 1050 V370 - 1250 J40 kA320 - 1740 V
High Energy Bare MOV Discs130 - 1400 VAC (170 - 1750 VDC)200 - 2200 V310 - 7000 J10 - 70 kA340 - 3580 V

Thermally Protected MOVs

 Maximum Continuous VoltageSurge CurrentVoltage Protection Rating
Thermally Protected MOVs150 - 690 VAC (200 - 910 VDC)25 - 50 kA600 - 2200 V

Surge Arrestors & Assemblies

 Maximum Continuous Operating VoltageRated VoltageDC Reference VoltageCurrent Impulse Withstand CapacityMaximum Residual Voltage Ratio
Surge Arrestors480 - 6720 VDC280 - 6000 V600 - 9200 V40 - 100 kA1.69 - 1.88

Silicon Carbide Suppressors

 Maximum Continuous Operating VoltageMaximum Continuous Power RatingMaximum Discharge CapacityVaristor Voltage Maximum
Silicon Carbide Suppressors135 - 1350 VAC (6 - 1500 VDC)1.5 - 40 W275 - 90000 J210 - 2160 V

Selenium Surge Suppressors (polarised)

 Maximum DC VoltageMaximum Clamping VoltagePeak Discharge Current
Selenium Surge Suppressor (Polarized)90 - 675 VDC240 - 1800 V3 - 904 A

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Telephone +44 (0)1793 784389 or email: sales@ppm.co.uk