{"id":6800,"date":"2026-06-21T12:32:45","date_gmt":"2026-06-21T12:32:45","guid":{"rendered":"https:\/\/materialparts.com\/v20e275p\/"},"modified":"2026-06-21T12:32:45","modified_gmt":"2026-06-21T12:32:45","slug":"v20e275p","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/v20e275p\/","title":{"rendered":"V20E275P"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The V20E275P from Littelfuse is a 20 mm UltraMOV metal oxide varistor (MOV) rated for 275 VAC \/ 350 VDC continuous operation with 10 kA surge current rating, designed for AC line transient voltage suppression.<\/p>\n

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\u7c7b\u578b<\/td>\nMetal Oxide Varistor (MOV), UltraMOV Series<\/td>\n<\/tr>\n
Continuous AC Voltage (VM(AC))<\/td>\n275 VAC RMS<\/td>\n<\/tr>\n
Continuous DC Voltage (VM(DC))<\/td>\n350 VDC<\/td>\n<\/tr>\n
Varistor Voltage (VNOM)<\/td>\n387 V to 473 V @ 1mA DC<\/td>\n<\/tr>\n
Clamping Voltage (VC)<\/td>\n710 V @ 100 A (8\/20us)<\/td>\n<\/tr>\n
Peak Surge Current (ITM)<\/td>\n10,000 A (8\/20us, single pulse)<\/td>\n<\/tr>\n
Energy Rating (WTM)<\/td>\n190 J (2ms square wave)<\/td>\n<\/tr>\n
Capacitance<\/td>\n900 pF @ 1 MHz<\/td>\n<\/tr>\n
Diameter<\/td>\n20 mm disc, radial leads<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-55C to +85C<\/td>\n<\/tr>\n<\/table>\n

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    \n
  • 10 kA peak surge current rating<\/li>\n
  • 190 J energy absorption capability<\/li>\n
  • UL 1449 recognized<\/li>\n
  • IEC 61051 certified<\/li>\n
  • Halogen-free and RoHS compliant<\/li>\n
  • Laser-branded for identification<\/li>\n
  • Bidirectional protection<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • AC power line surge protection (SPD)<\/li>\n
    • UPS transient suppression<\/li>\n
    • Industrial equipment overvoltage protection<\/li>\n
    • AC power meters and distribution panels<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The V20E275P from Littelfuse is a 20 mm UltraMOV metal oxide varistor (MOV) rated for 275 VAC \/ 350 VDC continuous operation with 10 kA surge current rating, designed for AC line transient voltage suppression. Key Specifications Type Metal Oxide Varistor (MOV), UltraMOV Series Continuous AC Voltage (VM(AC)) 275 VAC RMS Continuous DC […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19,13],"tags":[],"chip_brand":[200],"class_list":["post-6800","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-littelfuse"],"acf":{"brief_explanation":"20mm MOV Varistor, 275VAC, 10kA Surge, 710V Clamp, Radial Lead","date_code":"","package_case":"Disc 20mm, Radial Leads (7.5mm lead spacing)","in_stock":456,"datasheet":"https:\/\/www.littelfuse.com\/assetdocs\/varistors-ultramov-datasheet?assetguid=00498970-451b-4e23-a419-f1ff8625d2a0","price":"$0.65 @ 1ku","product_introduction":"The V20E275P from Littelfuse is a 20 mm epoxy-coated UltraMOV metal oxide varistor designed for high-energy transient voltage suppression on AC power lines. The device is rated for 275 VAC RMS continuous operation with a varistor voltage range of 387-473 V and clamps transients at 710 V under 100 A surge current. The 10 kA single-pulse surge current rating and 190 J energy absorption capability provide robust protection against lightning and switching transients. The bidirectional nature of the MOV clamps both positive and negative overvoltage events. UL 1449 recognized and IEC 61051 certified for safety compliance.","working_principle":"The V20E275P uses a polycrystalline zinc oxide (ZnO) ceramic body with intergranular boundaries that exhibit nonlinear current-voltage characteristics. Under normal operating voltage (below the varistor voltage), the device presents very high impedance (essentially an open circuit) with only microampere-level leakage current. When a transient voltage exceeds the varistor voltage, the ZnO grain boundaries undergo avalanche breakdown, causing the impedance to drop dramatically. This shunts the transient current away from the protected circuit while clamping the voltage to approximately 710 V. After the transient subsides, the device returns to its high-impedance state. The 20 mm disc provides sufficient thermal mass to absorb the 190 J of energy during a 2 ms transient event without degradation. The epoxy coating provides electrical insulation and mechanical protection while meeting UL 2500 V isolation requirements.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>Lead 1<\/td>Terminal<\/td>Connection to protected line<\/td><\/tr>
      2<\/td>Lead 2<\/td>Terminal<\/td>Connection to neutral\/ground<\/td><\/tr><\/table>","application_scenarios":"
      • 230VAC power inlet surge protection in industrial equipment<\/li>
      • UPS AC input and output transient suppression<\/li>
      • Surge protection device (SPD) module for distribution panels<\/li>
      • AC power meter overvoltage protection<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Littelfuse<\/td>V14E275P<\/td>14mm disc<\/td>Same voltage, lower surge (6kA)<\/td><\/tr>
        Littelfuse<\/td>V20E250P<\/td>20mm disc<\/td>250VAC variant<\/td><\/tr>
        TDK<\/td>B72220S0271K101<\/td>20mm disc<\/td>275VAC MOV, similar specs<\/td><\/tr>
        EPCOS\/TDK<\/td>S20K275<\/td>20mm disc<\/td>275VAC MOV equivalent<\/td><\/tr>
        Bourns<\/td>MOV-20D431KTR<\/td>20mm disc<\/td>275VAC rated MOV<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6800","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=6800"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6800\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=6800"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=6800"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=6800"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=6800"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}