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. 240-129
BrandRS PRO
SGD19.08
Each
units
400V 275V 370V 680V - 215J High Power 36mm 12000A 2.28nF - - 4mm 36 (Dia.) x 4mm
RS Stock No. 240-179
BrandRS PRO
SGD24.29
Each
units
400V 275V 370V 680V - 180J High Power 32mm 10000A 1.9nF - - 4mm 32 (Dia.) x 4mm
RS Stock No. 240-185
BrandRS PRO
SGD32.96
Each
units
610V 420V 560V 1050V - 260J High Power 32mm 10000A 1.71nF - - 5.5mm 32 (Dia.) x 5.5mm
RS Stock No. 240-208
BrandRS PRO
SGD26.75
Each
units
710V 484V 640V 1200V - 320J High Power 32mm 10000A 1.62nF - - 6mm 32 (Dia.) x 6mm
RS Stock No. 240-236
BrandRS PRO
SGD57.56
Each
units
- 275V 365V - - 360J High Power - - - 61mm 50mm 40mm 61 x 50 x 40mm
RS Stock No. 240-113
BrandRS PRO
SGD18.27
Each
units
360V 250V 330V 620V - 190J High Power 36mm 12000A 3.085nF - - 4mm 36 (Dia.) x 4mm
RS Stock No. 240-157
BrandRS PRO
SGD15.49
Each
units
710V 484V 640V 1200V - 380J High Power 36mm 12000A 1.94nF - - 6mm 36 (Dia.) x 6mm
RS Stock No. 240-242
BrandRS PRO
SGD67.75
Each
units
- 460V 605V - - 500J High Power - - - 61mm 50mm 40mm 61 x 50 x 40mm
RS Stock No. 240-141
BrandRS PRO
SGD18.20
Each
units
670V 460V 615V 1140V - 350J High Power 36mm 12000A 2.05nF - - 6mm 36 (Dia.) x 6mm
RS Stock No. 707-9801
Mfr. Part No.DVSB275652TNS
SGD254.56
Each
units
- 275V 350V - - - DVSB - 50000A - 36mm 70mm 90mm 36 x 70 x 90mm
RS Stock No. 851-8335
Mfr. Part No.MOV-14D471K
BrandBourns
SGD0.66
Each
units
470V - 385V 775V 50A 125J MOV-14D 16.5mm - 430pF - - 5.4mm 16.5 (Dia.) x 5.4mm
RS Stock No. 543-5221
Mfr. Part No.V420LA10P
BrandLittelfuse
SGD0.566
Each (In a Pack of 5)
units
748V 420V 560V 1120V 25A 55J LA 12.5mm 2500A 140pF - - 7.3mm 12.5 (Dia.) x 7.3mm
RS Stock No. 170-9999
Mfr. Part No.V250LA40AP
BrandLittelfuse
SGD0.582
Each (In a Bag of 500)
units
429V 250V 330V 650V 100A 130J LA 23mm 6500A 1nF - - 5.6mm 23 (Dia.) x 5.6mm
RS Stock No. 170-9918
Mfr. Part No.V420LA10P
BrandLittelfuse
SGD0.277
Each (In a Bag of 1000)
units
748V 420V 560V 1120V 25A 55J LA 12.5mm 2500A 140pF - - 7.3mm 12.5 (Dia.) x 7.3mm
RS Stock No. 800-7052
Mfr. Part No.V250LA40AP
BrandLittelfuse
SGD0.972
Each (In a Pack of 10)
units
429V 250V 330V 650V 100A 130J LA 23mm 6500A 1nF - - 5.6mm 23 (Dia.) x 5.6mm
RS Stock No. 760-6936
Mfr. Part No.V250LA2P
BrandLittelfuse
SGD0.365
Each (In a Pack of 10)
units
354 → 473V 250V 330V 730V 10A 21J LA 9mm 1200A 90pF - - 5.6mm 9 (Dia.) x 5.6mm
RS Stock No. 170-9967
Mfr. Part No.V250LA2P
BrandLittelfuse
SGD0.161
Each (In a Bag of 1500)
units
354 → 473V 250V 330V 730V 10A 21J LA 9mm 1200A 90pF - - 5.6mm 9 (Dia.) x 5.6mm
RS Stock No. 760-7065
Mfr. Part No.V68ZA10P
BrandLittelfuse
SGD0.654
Each (In a Pack of 5)
units
61 → 75V 40V 56V 135V 10A 13J ZA 17mm 1000A 3.87nF - - 5.6mm 17 (Dia.) x 5.6mm
RS Stock No. 170-9993
Mfr. Part No.V68ZA10P
BrandLittelfuse
SGD0.241
Each (In a Bag of 700)
units
61 → 75V 40V 56V 135V 10A 13J ZA 17mm 1000A 3.87nF - - 5.6mm 17 (Dia.) x 5.6mm
RS Stock No. 162-1435
Mfr. Part No.B72214S0500K101
BrandEPCOS
SGD0.304
Each (On a Reel of 500)
units
82V 50V 65V 135V 50A 15J Standard 15.5mm 4500A 1.8nF - - 3.9mm 15.5 (Dia.) x 3.9mm
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