{"id":844,"date":"2021-04-27T07:47:25","date_gmt":"2021-04-27T07:47:25","guid":{"rendered":"https:\/\/www.wolunelectric.com\/?post_type=product&p=844"},"modified":"2026-05-14T15:34:15","modified_gmt":"2026-05-14T07:34:15","slug":"zw7-40-5-33kv-high-voltage-outdoor-vacuum-circuit-breaker","status":"publish","type":"product","link":"https:\/\/www.wolunelectric.com\/th\/product\/zw7-40-5-33kv-high-voltage-outdoor-vacuum-circuit-breaker\/","title":{"rendered":"ZW7-40.5 33kV High Voltage Outdoor Vacuum Circuit Breaker"},"content":{"rendered":"

 <\/p>\n

General Introduction<\/strong><\/h2>\n

ZW7-40.5 type outdoor high voltage vacuum circuit breaker is the three-phase AC 50Hz outdoor high voltage electrical equipment;<\/p>\n

suit for control and protection of 20~40.5kV transmission and distribution system; can also be used for sectional circuit breaker and switching capacitor bank occasions;<\/p>\n

this product can be matched with piecewise controller, reclose device can realize the power system intelligent segmentation, reclose control. And can add the current transformer for measurement and protection.<\/p>\n

Circuit breaker equipped with spring or electromagnetic actuator, reliable mechanical performance, frequent operation; no fire and explosion danger;<\/p>\n

circuit breaker conforms to the national standard GB1984-1989 \u201cAC high voltage circuit breaker\u201d and the International Electrotechnical Commission Standard IEC56, IEC62271-100 \u201chigh voltage AC circuit breaker\u201d requirements.<\/p>\n

The main characteristics of circuit breaker: excellent breaking performance, use vacuum arc, high breaking capability, mechanical life of up to 10000 times, has the advantages of simple structure, free maintenance, no maintenance cycle long;<\/p>\n

good insulation performance, good anti contamination ability; can be installed current transformer according to customer requirements, the measurement accuracy up to 0.2 class, can realize the three-phase interactive protection.<\/p>\n

<\/h5>\n

Working Conditions<\/strong><\/h2>\n

Ambient temperature: upper limit +40\u2103, lower limit -30\u2103<\/p>\n

Days difference does not exceed 32K<\/p>\n

Altitude: 1000m and the following areas<\/p>\n

Wind pressure: not more than 700Pa (corresponding to the wind speed 34m\/s)<\/p>\n

Air pollution level: IV class<\/p>\n

Earthquake intensity: do not exceed 8 degree<\/p>\n

Ice thickness: no more than 10mm<\/p>\n

 <\/p>\n

Main Features of ZW7-40.5 Outdoor Vacuum Circuit Breaker<\/h2>\n
    \n
  • Vacuum arc extinguishing technology<\/li>\n
  • High short-circuit breaking capacity<\/li>\n
  • Outdoor porcelain or silicone rubber insulation<\/li>\n
  • Reliable spring or electromagnetic operating mechanism<\/li>\n
  • Maintenance-free structure<\/li>\n
  • Long electrical and mechanical life<\/li>\n
  • Excellent anti-pollution performance<\/li>\n
  • Suitable for frequent operation<\/li>\n
  • Optional built-in current transformer<\/li>\n
  • Remote control and intelligent automation support<\/li>\n<\/ul>\n

    The circuit breaker is designed for harsh outdoor environments with reliable sealing, anti-aging capability, and strong insulation performance.<\/p>\n

     <\/p>\n

    Technical Specification<\/strong><\/h2>\n

    \"ZW7<\/p>\n

     <\/p>\n

    Structural Features<\/h2>\n

    Vacuum Interrupter Technology<\/h3>\n

    The breaker adopts vacuum arc extinguishing chambers with strong interruption capability, stable insulation performance, and long service life.<\/p>\n

    Reliable Operating Mechanism<\/h3>\n

    Available with spring operating mechanism or electromagnetic operating mechanism for stable and reliable operation under frequent switching conditions.<\/p>\n

    Excellent Outdoor Performance<\/h3>\n

    The outdoor structure provides strong resistance to UV radiation, humidity, dust, pollution, and harsh climate conditions.<\/p>\n

    Flexible CT Configuration<\/h3>\n

    Optional built-in or external current transformers can support metering, protection, and differential protection applications<\/p>\n

    \n

    Outline Drawing<\/strong><\/h2>\n

    \"\" \"\"<\/p>\n

     <\/p>\n

    <\/h4>","protected":false},"excerpt":{"rendered":"

    ZW7-40.5 Outdoor High Voltage Vacuum Circuit Breaker is a 33kV\/35kV outdoor vacuum switchgear designed for substations and power distribution systems.<\/p>\n

    It features vacuum arc extinguishing, maintenance-free operation, high breaking capacity, and reliable outdoor performance for utility and industrial applications.<\/p>","protected":false},"featured_media":848,"template":"","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"ZW7-40.5 33kV High Voltage Outdoor Vacuum Circuit Breaker | 35kV Outdoor VCB Manufacturer","_seopress_titles_desc":"ZW7-40.5 Outdoor High Voltage Vacuum Circuit Breaker for 33kV and 35kV power distribution systems. Outdoor VCB with vacuum interrupter, high breaking capacity, reliable insulation, and optional intelligent control functions.","_seopress_robots_index":""},"product_brand":[],"product_cat":[44],"product_tag":[62],"class_list":{"0":"post-844","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-vacuum-circuit-breaker","7":"product_tag-outdoor-vacuum-circuit-breaker","9":"first","10":"instock","11":"shipping-taxable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product\/844","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/media\/848"}],"wp:attachment":[{"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/media?parent=844"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product_brand?post=844"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product_cat?post=844"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product_tag?post=844"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}