{"id":3251,"date":"2026-04-27T06:18:56","date_gmt":"2026-04-27T06:18:56","guid":{"rendered":"https:\/\/niunielec.com\/?post_type=product&#038;p=3251"},"modified":"2026-04-27T06:18:56","modified_gmt":"2026-04-27T06:18:56","slug":"nu-vzx-12-630-25-vcb-for-gas-insulated-switchgear","status":"publish","type":"product","link":"https:\/\/niunielec.com\/fr\/product\/nu-vzx-12-630-25-vcb-for-gas-insulated-switchgear\/","title":{"rendered":"NU-VZX-12\/630-25 Disjoncteur \u00e0 vide int\u00e9gr\u00e9 pour appareillage de commutation isol\u00e9 au gaz de 12 kV"},"content":{"rendered":"<h2 id=\"h2-1\"><span style=\"font-size: 75%;\"><strong>High-Stability NU-VZX-12\/630-25 VCB for Gas-Insulated Switchgear Systems<\/strong><\/span><\/h2>\n<h3><strong><span style=\"font-size: 75%;\">Description du produit<\/span><\/strong><\/h3>\n<p>The NU-VZX-12\/630-25 Circuit Breaker is a high-reliability component engineered specifically for 12kV\/630A gas-insulated switchgear (GIS) cabinets. This switch utilizes an integrated structure that combines a disconnect switch and a vacuum circuit breaker, streamlining the overall cabinet design while ensuring a short-circuit breaking capacity of 25kA. By employing advanced vacuum arc-extinguishing technology, it provides high safety and stable mechanical performance, meeting the strict requirements of GB\/T1984-2017 for modern high-voltage power distribution.<\/p>\n<h3><strong><span style=\"font-size: 75%;\">Applications<\/span><\/strong><\/h3>\n<ul>\n<li>Primary protection switch for 12kV gas-insulated switchgear (GIS) in urban and industrial grids.<\/li>\n<li>Optimized for compact power distribution units requiring integrated isolation and vacuum interruption.<\/li>\n<li>Suitable for substations requiring stable performance under -40\u00b0C to +40\u00b0C operating conditions.<\/li>\n<\/ul>\n<h3><span style=\"font-size: 75%;\"><strong>Operating Environment Conditions<\/strong><\/span><\/h3>\n<ul>\n<li>Altitude not exceeding 2000 m; seismic intensity not exceeding 8 degrees;<\/li>\n<li>Pollution degree: II;<\/li>\n<li>Ambient operating temperature: -40\u00b0C to +40\u00b0C; relative humidity: daily average not exceeding 90%, monthly average not exceeding 90%;<\/li>\n<li>Not suitable for installation in locations subject to frequent severe vibrations, or where water vapor, gases, chemically corrosive deposits, salt fog, dust, or dirt significantly affect the performance of the mechanism, or where there is a risk of fire or explosion.<\/li>\n<\/ul>\n<h3><span style=\"font-size: 75%;\"><strong>Param\u00e8tres techniques<\/strong><\/span><\/h3>\n<p>Main Technical Parameters<\/p>\n<table style=\"border-collapse: collapse; width: 415.02pt;\" border=\"0\" width=\"830\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr style=\"height: 14.75pt;\">\n<td class=\"et3\" style=\"height: 14.75pt; width: 49.50pt;\" width=\"99\" height=\"29\">Non.<\/td>\n<td class=\"et3\" style=\"width: 225.00pt;\" width=\"450\">Objet<\/td>\n<td class=\"et3\" style=\"width: 40.50pt;\" width=\"81\">Unit\u00e9<\/td>\n<td class=\"et3\" style=\"width: 100.00pt;\" width=\"200\">Valeur<\/td>\n<\/tr>\n<tr style=\"height: 19.00pt;\">\n<td class=\"et4\" style=\"height: 19.00pt; width: 49.50pt;\" width=\"99\" height=\"38\">1<\/td>\n<td class=\"et4\" style=\"width: 225.00pt;\" width=\"450\">Tension nominale<\/td>\n<td class=\"et4\" style=\"width: 40.50pt;\" width=\"81\">kV<\/td>\n<td class=\"et4\" style=\"width: 100.00pt;\" width=\"200\">12<\/td>\n<\/tr>\n<tr style=\"height: 19.00pt;\">\n<td class=\"et4\" style=\"height: 19.00pt; width: 49.50pt;\" width=\"99\" height=\"38\">2<\/td>\n<td class=\"et4\" style=\"width: 225.00pt;\" width=\"450\">Courant nominal<\/td>\n<td class=\"et4\" style=\"width: 40.50pt;\" width=\"81\">A<\/td>\n<td class=\"et4\" style=\"width: 100.00pt;\" width=\"200\">630<\/td>\n<\/tr>\n<tr style=\"height: 19.00pt;\">\n<td class=\"et4\" style=\"height: 19.00pt; width: 49.50pt;\" width=\"99\" height=\"38\">3<\/td>\n<td class=\"et4\" style=\"width: 225.00pt;\" width=\"450\">Courant de r\u00e9sistance nominal de cr\u00eate<\/td>\n<td class=\"et4\" style=\"width: 40.50pt;\" width=\"81\">kA<\/td>\n<td class=\"et4\" style=\"width: 100.00pt;\" width=\"200\">63<\/td>\n<\/tr>\n<tr style=\"height: 19.00pt;\">\n<td class=\"et4\" style=\"height: 19.00pt; width: 49.50pt;\" width=\"99\" height=\"38\">4<\/td>\n<td class=\"et4\" style=\"width: 225.00pt;\" width=\"450\">Courant de tenue nominal de courte dur\u00e9e<\/td>\n<td class=\"et4\" style=\"width: 40.50pt;\" width=\"81\">kA\/s<\/td>\n<td class=\"et6\" style=\"width: 100.00pt;\" width=\"200\">25\/4<\/td>\n<\/tr>\n<tr style=\"height: 19.00pt;\">\n<td class=\"et4\" style=\"height: 19.00pt; width: 49.50pt;\" width=\"99\" height=\"38\">5<\/td>\n<td class=\"et4\" style=\"width: 225.00pt;\" width=\"450\">Courant nominal de rupture en court-circuit<\/td>\n<td class=\"et4\" style=\"width: 40.50pt;\" width=\"81\">kA<\/td>\n<td class=\"et4\" style=\"width: 100.00pt;\" width=\"200\">25<\/td>\n<\/tr>\n<tr style=\"height: 19.00pt;\">\n<td class=\"et4\" style=\"height: 19.00pt; width: 49.50pt;\" width=\"99\" height=\"38\">6<\/td>\n<td class=\"et4\" style=\"width: 225.00pt;\" width=\"450\">Courant nominal de fermeture en cas de court-circuit<\/td>\n<td class=\"et4\" style=\"width: 40.50pt;\" width=\"81\">kA<\/td>\n<td class=\"et4\" style=\"width: 100.00pt;\" width=\"200\">63<\/td>\n<\/tr>\n<tr style=\"height: 19.00pt;\">\n<td class=\"et4\" style=\"height: 19.00pt; width: 49.50pt;\" width=\"99\" height=\"38\">7<\/td>\n<td class=\"et4\" style=\"width: 225.00pt;\" width=\"450\">Fr\u00e9quence nominale<\/td>\n<td class=\"et4\" style=\"width: 40.50pt;\" width=\"81\">Hz<\/td>\n<td class=\"et4\" style=\"width: 100.00pt;\" width=\"200\">50<\/td>\n<\/tr>\n<tr style=\"height: 19.00pt;\">\n<td class=\"et4\" style=\"height: 19.00pt; width: 49.50pt;\" width=\"99\" height=\"38\">8<\/td>\n<td class=\"et4\" style=\"width: 225.00pt;\" width=\"450\">S\u00e9quence de fonctionnement nominale<\/td>\n<td class=\"et4\" style=\"width: 40.50pt;\" width=\"81\">&#8211;<\/td>\n<td class=\"et4\" style=\"width: 100.00pt;\" width=\"200\">0-0.3s-180s-co<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Mechanical Parameters<\/p>\n<table style=\"border-collapse: collapse; width: 430.02pt;\" border=\"0\" width=\"860\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr style=\"height: 14.75pt;\">\n<td class=\"et3\" style=\"height: 14.75pt; width: 49.50pt;\" width=\"99\" height=\"29\">Non.<\/td>\n<td class=\"et3\" style=\"width: 241.50pt;\" width=\"483\">Objet<\/td>\n<td class=\"et3\" style=\"width: 36.00pt;\" width=\"72\">Unit\u00e9<\/td>\n<td class=\"et3\" style=\"width: 103.00pt;\" width=\"206\">Valeur<\/td>\n<\/tr>\n<tr style=\"height: 19.00pt;\">\n<td class=\"et4\" style=\"height: 19.00pt; width: 49.50pt;\" width=\"99\" height=\"38\">1<\/td>\n<td class=\"et4\" style=\"width: 241.50pt;\" width=\"483\">Circuit breaker main circuit resistance<\/td>\n<td class=\"et4\" style=\"width: 36.00pt;\" width=\"72\">\u00b5\u03a9<\/td>\n<td class=\"et4\" style=\"width: 103.00pt;\" width=\"206\">\u2264 30<\/td>\n<\/tr>\n<tr style=\"height: 19.00pt;\">\n<td class=\"et4\" style=\"height: 19.00pt; width: 49.50pt;\" width=\"99\" height=\"38\">2<\/td>\n<td class=\"et4\" style=\"width: 241.50pt;\" width=\"483\">Travel<\/td>\n<td class=\"et4\" style=\"width: 36.00pt;\" width=\"72\">mm<\/td>\n<td class=\"et6\" style=\"width: 103.00pt;\" width=\"206\">2-3<\/td>\n<\/tr>\n<tr style=\"height: 19.00pt;\">\n<td class=\"et4\" style=\"height: 19.00pt; width: 49.50pt;\" width=\"99\" height=\"38\">3<\/td>\n<td class=\"et4\" style=\"width: 241.50pt;\" width=\"483\">Opening pitch<\/td>\n<td class=\"et4\" style=\"width: 36.00pt;\" width=\"72\">mm<\/td>\n<td class=\"et6\" style=\"width: 103.00pt;\" width=\"206\">8-10<\/td>\n<\/tr>\n<tr style=\"height: 19.00pt;\">\n<td class=\"et4\" style=\"height: 19.00pt; width: 49.50pt;\" width=\"99\" height=\"38\">4<\/td>\n<td class=\"et4\" style=\"width: 241.50pt;\" width=\"483\">Bounce<\/td>\n<td class=\"et4\" style=\"width: 36.00pt;\" width=\"72\">ms<\/td>\n<td class=\"et4\" style=\"width: 103.00pt;\" width=\"206\">\u2264 2<\/td>\n<\/tr>\n<tr style=\"height: 19.00pt;\">\n<td class=\"et4\" style=\"height: 19.00pt; width: 49.50pt;\" width=\"99\" height=\"38\">5<\/td>\n<td class=\"et4\" style=\"width: 241.50pt;\" width=\"483\">Average speed at opening<\/td>\n<td class=\"et4\" style=\"width: 36.00pt;\" width=\"72\">m\/s<\/td>\n<td class=\"et4\" style=\"width: 103.00pt;\" width=\"206\">0.6-1.4<\/td>\n<\/tr>\n<tr style=\"height: 19.00pt;\">\n<td class=\"et4\" style=\"height: 19.00pt; width: 49.50pt;\" width=\"99\" height=\"38\">6<\/td>\n<td class=\"et4\" style=\"width: 241.50pt;\" width=\"483\">Vitesse de fermeture moyenne<\/td>\n<td class=\"et4\" style=\"width: 36.00pt;\" width=\"72\">m\/s<\/td>\n<td class=\"et4\" style=\"width: 103.00pt;\" width=\"206\">0.4-1.1<\/td>\n<\/tr>\n<tr style=\"height: 19.00pt;\">\n<td class=\"et4\" style=\"height: 19.00pt; width: 49.50pt;\" width=\"99\" height=\"38\">7<\/td>\n<td class=\"et4\" style=\"width: 241.50pt;\" width=\"483\">Opening three-phase non-synchronism<\/td>\n<td class=\"et4\" style=\"width: 36.00pt;\" width=\"72\">ms<\/td>\n<td class=\"et4\" style=\"width: 103.00pt;\" width=\"206\">\u2264 2<\/td>\n<\/tr>\n<tr style=\"height: 19.00pt;\">\n<td class=\"et4\" style=\"height: 19.00pt; width: 49.50pt;\" width=\"99\" height=\"38\">8<\/td>\n<td class=\"et4\" style=\"width: 241.50pt;\" width=\"483\">Closing three-phase non-synchronism<\/td>\n<td class=\"et4\" style=\"width: 36.00pt;\" width=\"72\">ms<\/td>\n<td class=\"et4\" style=\"width: 103.00pt;\" width=\"206\">\u2264 2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><span style=\"font-size: 75%;\"><strong>Dessin<\/strong><\/span><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-3255\" src=\"https:\/\/niunielec.com\/wp-content\/uploads\/2026\/04\/nu-vzx-12-630-25-gis-switch-structure-drawing-768x499.webp\" alt=\"nu vzx 12\/630 25 : disjoncteur \u00e0 d\u00e9charge sous vide int\u00e9gr\u00e9 pour appareillage de commutation isol\u00e9 au gaz de 12 kV\" width=\"768\" height=\"499\" srcset=\"https:\/\/niunielec.com\/wp-content\/uploads\/2026\/04\/nu-vzx-12-630-25-gis-switch-structure-drawing-768x499.webp 768w, https:\/\/niunielec.com\/wp-content\/uploads\/2026\/04\/nu-vzx-12-630-25-gis-switch-structure-drawing-1024x665.webp 1024w, https:\/\/niunielec.com\/wp-content\/uploads\/2026\/04\/nu-vzx-12-630-25-gis-switch-structure-drawing-440x286.webp 440w, https:\/\/niunielec.com\/wp-content\/uploads\/2026\/04\/nu-vzx-12-630-25-gis-switch-structure-drawing-600x390.webp 600w, https:\/\/niunielec.com\/wp-content\/uploads\/2026\/04\/nu-vzx-12-630-25-gis-switch-structure-drawing.webp 1096w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/p>\n<h3><strong><span style=\"font-size: 75%;\">FAQ for Gas-Insulated Switchgear Components<\/span><\/strong><\/h3>\n<ul>\n<li>Q: Why is the integrated structure better for GIS cabinets?<\/li>\n<\/ul>\n<p>A: It reduces the overall footprint and simplifies the linkage mechanism, which is critical for the pressurized and compact environment of a gas-insulated switchgear.<\/p>\n<ul>\n<li>Q: Does this 12kV VCB require regular maintenance?<\/li>\n<\/ul>\n<p>A: The vacuum interrupter is maintenance-free for its electrical life, providing a highly reliable solution for sealed GIS environments.<\/p>\n<ul>\n<li>Q: Can I use this for eco-friendly (SF6-free) gas cabinets?<\/li>\n<\/ul>\n<p>A: Yes. If you are specifically building a 12kV eco-friendly system, you can also evaluate our NU-GFV-12-630-20 Circuit Breaker.<\/p>\n<p><strong><a href=\"https:\/\/niunielec.com\/fr\/contact-us\/\">Inquire Now<\/a> to receive the NU-VZX-12\/630-25 technical catalog or to discuss your GIS project requirements.<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<ul>\n<li>GIS Ready: Optimized for 12kV gas-insulated switchgear cabinets.<\/li>\n<li>Integrated Design: 2-in-1 disconnect switch and vacuum circuit breaker.<\/li>\n<li>High Performance: Tested for 25kA short-circuit breaking capacity.<\/li>\n<\/ul>","protected":false},"featured_media":3254,"comment_status":"open","ping_status":"closed","template":"","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"NU-VZX-12\/630-25 VCB | Gas-Insulated Switchgear Circuit Breaker","_seopress_titles_desc":"High-performance NU-VZX-12\/630-25 Vacuum Circuit Breaker designed for 12kV\/630A gas-insulated switchgear. Integrated disconnect switch ensures reliability in GIS applications.","_seopress_robots_index":""},"product_brand":[],"product_cat":[26,61],"product_tag":[273,268,278,277,276],"class_list":{"0":"post-3251","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-gas-insulated-switchgear-components","7":"product_cat-circuit-bearker","8":"product_tag-12kv-vcb","9":"product_tag-gas-insulated-switchgear","10":"product_tag-gis-switch","11":"product_tag-integrated-circuit-breaker","12":"product_tag-nu-vzx-12-630-25","14":"first","15":"instock","16":"shipping-taxable","17":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/niunielec.com\/fr\/wp-json\/wp\/v2\/product\/3251","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/niunielec.com\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/niunielec.com\/fr\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/niunielec.com\/fr\/wp-json\/wp\/v2\/comments?post=3251"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/niunielec.com\/fr\/wp-json\/wp\/v2\/media\/3254"}],"wp:attachment":[{"href":"https:\/\/niunielec.com\/fr\/wp-json\/wp\/v2\/media?parent=3251"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/niunielec.com\/fr\/wp-json\/wp\/v2\/product_brand?post=3251"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/niunielec.com\/fr\/wp-json\/wp\/v2\/product_cat?post=3251"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/niunielec.com\/fr\/wp-json\/wp\/v2\/product_tag?post=3251"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}