Metal Oxide Varistors

What are they?
Metal Oxide Varistors, more commonly known as ’MOVs’ are devices that provide excellent transient voltage suppression. They are a type of non-linear device that feature similar characteristics to Zener diodes. They are used to protect vulnerable electronic circuits and components from overvoltage conditions that can cause damage. Any potentially destructive overvoltage energy is dissipated as heat.
Construction:
Metal oxide varistors are typically constructed from zinc oxide and combined with small additions of other metal oxides such as cobalt, magnese or bismuth. These materials are sintered into ceramic casings during manufacture. Although MOVs are available in different formats, they are most commonly radial leaded discs.
Applications:
• Suppression of lightning and other high levels of transient energy
• Low voltage power supplies in DC circuits
• Low voltage power supply in automotive applications
• Protection from internal transients within capacitor discharges, relay switching and inductive load switching

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Description Price Varistor Voltage Maximum AC Voltage Rating Maximum DC Voltage Rating Clamping Voltage Clamping Current Energy Series Diameter Maximum Surge Current Capacitance Length Depth Thickness Dimensions
RS Stock No. 167-0493
Mfr. Part No.B72260B0102K001
BrandEPCOS
MYR686.802
Each (In a Box of 10)
units
1800V 1100V 1465V 2970V 500A 3000J HighE - 70000A 1.6nF 100mm 100mm 24mm 100 x 100 x 24mm
RS Stock No. 172-5217
Mfr. Part No.820552501
MYR1.836
Each (On a Reel of 1500)
units
39V 25V 31V 86V 1A 1.2J WE-VD 7.5mm 100A 830pF - - 4.7mm 7.5 (Dia.) x 4.7mm
RS Stock No. 240-129
BrandRS PRO
MYR74.20
Each
units
400V 275V 370V 680V - 215J High Power 36mm 12000A 2.28nF - - 4mm 36 (Dia.) x 4mm
RS Stock No. 669-4428
Mfr. Part No.82550200
MYR2.70
Each (In a Pack of 5)
units
33V 20V 26V 54V 1A 0.3J WE-VS - 100A 350pF 2mm 1.25mm - -
RS Stock No. 289-7749
Mfr. Part No.B72210S0321K101
BrandEPCOS
MYR2.362
Each (In a Pack of 5)
units
510V 320V 420V 840V 25A 50J Standard 12mm 2500A 170pF - - 5.4mm 12 (Dia.) x 5.4mm
RS Stock No. 769-1533
Mfr. Part No.B72214P2511K101
BrandEPCOS
MYR4.725
Each (In a Pack of 10)
units
820V 510V 670V - 6000A 200J S14 17mm - 300pF - - 8.9mm 17 (Dia.) x 8.9mm
RS Stock No. 204-2062
Mfr. Part No.B72207S0271K101
BrandEPCOS
MYR2.236
Each (In a Pack of 5)
units
430V 275V 350V 710V 10A 21J Standard 9mm 1200A 95pF - - 4.4mm 9 (Dia.) x 4.4mm
RS Stock No. 769-2025
Mfr. Part No.B72660M0271K072
BrandEPCOS
MYR4.42
Each (In a Pack of 5)
units
430V 275Vrms 350V 710V 10A - CU - 1200A 95pF 10.2mm 8mm 4.5mm 10.2 x 8 x 4.5mm
RS Stock No. 769-1527
Mfr. Part No.B72210P2511K101
BrandEPCOS
MYR4.337
Each (In a Pack of 10)
units
820V 510V 670V - 3500A 92J S10 13mm - 180pF - - 8.8mm 13 (Dia.) x 8.8mm
RS Stock No. 170-2869
Mfr. Part No.B72220S0171K101
BrandEPCOS
MYR2.658
Each (On a Reel of 250)
units
270V 175V 225V 455V 100A 98J Standard 21.5mm 8000A 1nF - - 5mm 21.5 (Dia.) x 5mm
RS Stock No. 163-3891
Mfr. Part No.82550200
MYR2.423
Each (On a Reel of 4000)
units
33V 20V 26V 54V 1A 0.3J WE-VS - 100A 350pF 2mm 1.25mm - -
RS Stock No. 769-1492
Mfr. Part No.B72205S0301K101
BrandEPCOS
MYR1.088
Each (In a Pack of 10)
units
470V 300V 385V - 400A 9.6J StandarD 7mm - 45pF - - 4.5mm 7 (Dia.) x 4.5mm
RS Stock No. 170-2886
Mfr. Part No.B72220S0500K101
BrandEPCOS
MYR2.30
Each (On a Reel of 250)
units
82V 50V 65V 135V 100A 27J Standard 21.5mm 6500A 3.8nF - - 4.3mm 21.5 (Dia.) x 4.3mm
RS Stock No. 289-7064
Mfr. Part No.B72210S0251K101
BrandEPCOS
MYR2.362
Each (In a Pack of 5)
units
390V 250V 320V 650V 25A 38J Standard 12mm 2500A 215pF - - 4.8mm 12 (Dia.) x 4.8mm
RS Stock No. 769-1537
Mfr. Part No.B72214P2551K101
BrandEPCOS
MYR4.42
Each (In a Pack of 10)
units
910V 550V 745V - 6000A 220J S14 17mm - 265pF - - 9.4mm 17 (Dia.) x 9.4mm
RS Stock No. 240-208
BrandRS PRO
MYR93.63
Each
units
710V 484V 640V 1200V - 320J High Power 32mm 10000A 1.62nF - - 6mm 32 (Dia.) x 6mm
RS Stock No. 876-8151
Mfr. Part No.V321HB34
BrandLittelfuse
MYR38.789
Each (In a Pack of 180)
units
459V 320V 420V 510V - - HB34 - 40000A 3.8nF 37mm - - 37 x 47.5 x 6.9mm
RS Stock No. 785-8963
Mfr. Part No.ERZE14A361
BrandPanasonic
MYR3.61
Each (In a Pack of 5)
units
360V 230V 300V 595V 100A 255J ZNR 16.5mm 10000A 900pF - - 5.9mm 16.5 x 5.9mm
RS Stock No. 170-2913
Mfr. Part No.B72220Q0271K101
BrandEPCOS
MYR4.326
Each (On a Reel of 250)
units
430V 275V 350V 710V 130A 215J EnergetiQ 22.5mm 15000A 930pF - - 5.8mm 22.5 (Dia.) x 5.8mm
RS Stock No. 289-7626
Mfr. Part No.B72220S0500K101
BrandEPCOS
MYR3.896
Each (In a Pack of 5)
units
82V 50V 65V 135V 100A 27J Standard 21.5mm 6500A 3.8nF - - 4.3mm 21.5 (Dia.) x 4.3mm