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. 707-9801
Mfr. Part No.DVSB275652TNS
SGD267.96
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
SGD0.75
Each
units
470V - 385V 775V 50A 125J MOV-14D 16.5mm - 430pF - - 5.4mm 16.5 (Dia.) x 5.4mm
RS Stock No. 800-7052
Mfr. Part No.V250LA40AP
BrandLittelfuse
SGD1.029
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. 543-5221
Mfr. Part No.V420LA10P
BrandLittelfuse
SGD0.738
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
SGD0.737
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
SGD0.35
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. 170-9967
Mfr. Part No.V250LA2P
BrandLittelfuse
SGD0.229
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. 760-6936
Mfr. Part No.V250LA2P
BrandLittelfuse
SGD0.47
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. 760-7065
Mfr. Part No.V68ZA10P
BrandLittelfuse
SGD0.816
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
SGD0.445
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. 289-7121
Mfr. Part No.B72214S0500K101
BrandEPCOS
SGD0.646
Each (In a Pack of 5)
units
82V 50V 65V 135V 50A 15J Standard 15.5mm 4500A 1.8nF - - 3.9mm 15.5 (Dia.) x 3.9mm
RS Stock No. 162-1435
Mfr. Part No.B72214S0500K101
BrandEPCOS
SGD0.37
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
RS Stock No. 289-7288
Mfr. Part No.B72220S0171K101
BrandEPCOS
SGD1.428
Each (In a Pack of 5)
units
270V 175V 225V 455V 100A 98J Standard 21.5mm 8000A 1nF - - 5mm 21.5 (Dia.) x 5mm
RS Stock No. 170-2869
Mfr. Part No.B72220S0171K101
BrandEPCOS
SGD0.838
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. 289-7339
Mfr. Part No.B72220S0461K101
BrandEPCOS
SGD1.67
Each (In a Pack of 5)
units
750V 460V 615V 1240V 100A 195J Standard 21.5mm 8000A 380pF - - 6.8mm 21.5 (Dia.) x 6.8mm
RS Stock No. 106-9895
Mfr. Part No.ERZV10D471
BrandPanasonic
SGD0.252
Each (In a Bag of 1000)
units
470V 300V 385V 775V - - ZNR - 3500A 230pF - - - 11.5 (Dia.) x 6.2mm
RS Stock No. 720-9908
Mfr. Part No.ERZV10D471
BrandPanasonic
SGD0.435
Each (In a Pack of 10)
units
470V 300V 385V 775V 25A - ZNR 11.5mm 3500A 230pF - - - 11.5 (Dia.) x 6.2mm
RS Stock No. 439-653
Mfr. Part No.ERZV10D471
BrandPanasonic
SGD0.435
Each (In a Pack of 10)
units
470V 300V 385V 775V 25A 85J - 11.5mm 3500A 230pF - - 6.2mm 11.5 (Dia.) x 6.2mm
RS Stock No. 170-2873
Mfr. Part No.B72220S0461K101
BrandEPCOS
SGD1.03
Each (On a Reel of 200)
units
750V 460V 615V 1240V 100A 195J Standard 21.5mm 8000A 380pF - - 6.8mm 21.5 (Dia.) x 6.8mm
RS Stock No. 240-078
Mfr. Part No.DVS240
SGD37.22
Each
units
240V 275V 350V - - 264J DVS - 6500A - 75mm 52.5mm 12.5mm 75 x 52.5 x 12.5mm
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