{"id":3256,"date":"2026-04-27T07:07:03","date_gmt":"2026-04-27T07:07:03","guid":{"rendered":"https:\/\/niunielec.com\/?post_type=product&#038;p=3256"},"modified":"2026-04-27T07:10:42","modified_gmt":"2026-04-27T07:10:42","slug":"nu-fh-12-1250-25-gas-insulated-load-switch","status":"publish","type":"product","link":"https:\/\/niunielec.com\/ru\/%d0%bf%d1%80%d0%be%d0%b4%d1%83%d0%ba%d1%82\/nu-fh-12-1250-25-gas-insulated-load-switch\/","title":{"rendered":"NU-FH-12-1250-25 \u0420\u0430\u0437\u043c\u044b\u043a\u0430\u0442\u0435\u043b\u044c \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u0434\u043b\u044f \u0433\u0430\u0437\u043e\u0438\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430 12 \u043a\u0412"},"content":{"rendered":"<h2 id=\"h2-1\"><span style=\"font-size: 75%;\"><strong>High-Capacity NU-FH-12-1250-25 Load Switch for Gas-Insulated Switchgear Systems<\/strong><\/span><\/h2>\n<h3><strong><span style=\"font-size: 75%;\">\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0442\u043e\u0432\u0430\u0440\u0430<\/span><\/strong><\/h3>\n<p>The NU-FH-12-1250-25 Load Switch is a robust and versatile switching solution engineered specifically for 12kV\/1250A gas-insulated switchgear (GIS) and high-voltage ring main units. Designed for effortless installation and long-term mechanical stability, this load break switch (LBS) efficiently manages the power distribution needs of heavy-duty industrial and utility environments. It fully complies with international and domestic safety standards, including GB 3804-2017 and GB 16926-2009, making it a critical core component for AC high-voltage load switch-fuse combination units.<\/p>\n<h3><strong><span style=\"font-size: 75%;\">Applications<\/span><\/strong><\/h3>\n<ul>\n<li>Main control and protection switch for 12kV gas-insulated switchgear and modular substations.<\/li>\n<li>Core component for load switch-fuse combination units in secondary distribution networks.<\/li>\n<li>Reliable power control for urban grids, renewable energy plants, and large-scale industrial facilities.<\/li>\n<\/ul>\n<h3><strong><span style=\"font-size: 75%;\">Environmental Conditions<\/span><\/strong><\/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 temperature range: -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 vibration, 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><strong><span style=\"font-size: 75%;\">\u0422\u0435\u0445\u043d\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b<\/span><\/strong><\/h3>\n<table style=\"border-collapse: collapse; width: 355.52pt;\" border=\"0\" width=\"711\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr style=\"height: 20.00pt;\">\n<td class=\"et3\" style=\"height: 20.00pt; width: 26.00pt;\" width=\"52\" height=\"40\">\u041d\u0435\u0442.<\/td>\n<td class=\"et3\" style=\"width: 204.50pt;\" width=\"409\">\u0410\u0440\u0442\u0438\u043a\u0443\u043b<\/td>\n<td class=\"et3\" style=\"width: 36.00pt;\" width=\"72\">\u0415\u0434\u0438\u043d\u0438\u0446\u0430<\/td>\n<td class=\"et3\" style=\"width: 89.00pt;\" width=\"178\">Value<\/td>\n<\/tr>\n<tr style=\"height: 20.00pt;\">\n<td class=\"et4\" style=\"height: 20.00pt; width: 26.00pt;\" width=\"52\" height=\"40\">1<\/td>\n<td class=\"et4\" style=\"width: 204.50pt;\" width=\"409\">\u041d\u043e\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u043e\u0435 \u043d\u0430\u043f\u0440\u044f\u0436\u0435\u043d\u0438\u0435<\/td>\n<td class=\"et4\" style=\"width: 36.00pt;\" width=\"72\">\u043a\u0412<\/td>\n<td class=\"et4\" style=\"width: 89.00pt;\" width=\"178\">12<\/td>\n<\/tr>\n<tr style=\"height: 20.00pt;\">\n<td class=\"et4\" style=\"height: 20.00pt; width: 26.00pt;\" width=\"52\" height=\"40\">2<\/td>\n<td class=\"et4\" style=\"width: 204.50pt;\" width=\"409\">\u041d\u043e\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0439 \u0442\u043e\u043a<\/td>\n<td class=\"et4\" style=\"width: 36.00pt;\" width=\"72\">A<\/td>\n<td class=\"et4\" style=\"width: 89.00pt;\" width=\"178\">1250<\/td>\n<\/tr>\n<tr style=\"height: 20.00pt;\">\n<td class=\"et4\" style=\"height: 20.00pt; width: 26.00pt;\" width=\"52\" height=\"40\">3<\/td>\n<td class=\"et4\" style=\"width: 204.50pt;\" width=\"409\">Rated short-time withstand current<\/td>\n<td class=\"et4\" style=\"width: 36.00pt;\" width=\"72\">kA\/S<\/td>\n<td class=\"et5\" style=\"width: 89.00pt;\" width=\"178\">25\/3<\/td>\n<\/tr>\n<tr style=\"height: 20.00pt;\">\n<td class=\"et4\" style=\"height: 20.00pt; width: 26.00pt;\" width=\"52\" height=\"40\">4<\/td>\n<td class=\"et4\" style=\"width: 204.50pt;\" width=\"409\">\u041d\u043e\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0439 \u043f\u0438\u043a\u043e\u0432\u044b\u0439 \u0432\u044b\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u043c\u044b\u0439 \u0442\u043e\u043a<\/td>\n<td class=\"et4\" style=\"width: 36.00pt;\" width=\"72\">kA<\/td>\n<td class=\"et4\" style=\"width: 89.00pt;\" width=\"178\">50\/63<\/td>\n<\/tr>\n<tr style=\"height: 20.00pt;\">\n<td class=\"et4\" style=\"height: 20.00pt; width: 26.00pt;\" width=\"52\" height=\"40\">5<\/td>\n<td class=\"et4\" style=\"width: 204.50pt;\" width=\"409\">\u041d\u043e\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0439 \u0442\u043e\u043a \u0437\u0430\u043c\u044b\u043a\u0430\u043d\u0438\u044f \u043f\u0440\u0438 \u043a\u043e\u0440\u043e\u0442\u043a\u043e\u043c \u0437\u0430\u043c\u044b\u043a\u0430\u043d\u0438\u0438<\/td>\n<td class=\"et4\" style=\"width: 36.00pt;\" width=\"72\">kA<\/td>\n<td class=\"et4\" style=\"width: 89.00pt;\" width=\"178\">50\/63<\/td>\n<\/tr>\n<tr style=\"height: 20.00pt;\">\n<td class=\"et4\" style=\"height: 20.00pt; width: 26.00pt;\" width=\"52\" height=\"40\">6<\/td>\n<td class=\"et4\" style=\"width: 204.50pt;\" width=\"409\">\u041d\u043e\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u0430\u044f \u0447\u0430\u0441\u0442\u043e\u0442\u0430<\/td>\n<td class=\"et4\" style=\"width: 36.00pt;\" width=\"72\">HZ<\/td>\n<td class=\"et4\" style=\"width: 89.00pt;\" width=\"178\">50<\/td>\n<\/tr>\n<tr style=\"height: 20.00pt;\">\n<td class=\"et4\" style=\"height: 20.00pt; width: 26.00pt;\" width=\"52\" height=\"40\">7<\/td>\n<td class=\"et4\" style=\"width: 204.50pt;\" width=\"409\">Theoretical operation<\/td>\n<td class=\"et4\" style=\"width: 36.00pt;\" width=\"72\">time<\/td>\n<td class=\"et4\" style=\"width: 89.00pt;\" width=\"178\">5000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><span style=\"font-size: 75%;\"><strong>\u0420\u0438\u0441\u043e\u0432\u0430\u043d\u0438\u0435<\/strong><\/span><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-3260\" src=\"https:\/\/niunielec.com\/wp-content\/uploads\/2026\/04\/nu-fh-12-1250-25-lbs-mechanical-layout-drawing-648x768.webp\" alt=\"nu fh 12 1250 25 \u2014 \u0432\u044b\u043a\u043b\u044e\u0447\u0430\u0442\u0435\u043b\u044c \u043f\u043e\u0434 \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u043e\u0439 \u0434\u043b\u044f \u0433\u0430\u0437\u043e\u0438\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430 12 \u043a\u0412\" width=\"648\" height=\"768\" srcset=\"https:\/\/niunielec.com\/wp-content\/uploads\/2026\/04\/nu-fh-12-1250-25-lbs-mechanical-layout-drawing-648x768.webp 648w, https:\/\/niunielec.com\/wp-content\/uploads\/2026\/04\/nu-fh-12-1250-25-lbs-mechanical-layout-drawing-864x1024.webp 864w, https:\/\/niunielec.com\/wp-content\/uploads\/2026\/04\/nu-fh-12-1250-25-lbs-mechanical-layout-drawing-371x440.webp 371w, https:\/\/niunielec.com\/wp-content\/uploads\/2026\/04\/nu-fh-12-1250-25-lbs-mechanical-layout-drawing-768x910.webp 768w, https:\/\/niunielec.com\/wp-content\/uploads\/2026\/04\/nu-fh-12-1250-25-lbs-mechanical-layout-drawing-600x711.webp 600w, https:\/\/niunielec.com\/wp-content\/uploads\/2026\/04\/nu-fh-12-1250-25-lbs-mechanical-layout-drawing.webp 940w\" sizes=\"auto, (max-width: 648px) 100vw, 648px\" \/><\/p>\n<h3><strong><span style=\"font-size: 75%;\">FAQ for Gas-Insulated Load Break Switches<\/span><\/strong><\/h3>\n<ul>\n<li>Q: Why is the 1250A rating important for this GIS Load Switch?<\/li>\n<\/ul>\n<p>A: The 1250A rating ensures the switch can handle higher power loads without overheating, providing a significant safety margin for main circuit applications in a gas-insulated switchgear.<\/p>\n<ul>\n<li>Q: Can this mechanism withstand harsh environmental conditions?<\/li>\n<\/ul>\n<p>A: Yes. The device is tested for stable performance in temperatures from -40\u00b0C to +40\u00b0C. For the external cable terminations connected to this switch, consider using our <a href=\"https:\/\/niunielec.com\/ru\/product-category\/metal-clad-switchgear-components\/cable-clamp\/\">Industrial Cable Clamp<\/a> for secure fixation.<\/p>\n<ul>\n<li>Q: Is it compatible with circuit breaker configurations in the same project?<\/li>\n<\/ul>\n<p>A: Absolutely. For the vacuum protection sections of your GIS project, this switch works seamlessly alongside our <a href=\"https:\/\/niunielec.com\/ru\/product-category\/gas-insulated-switchgear-components\/circuit-bearker\/\">GIS Vacuum Circuit Breaker<\/a>.<\/p>\n<p><strong>Inquire Now to receive the full technical catalog or a customized quotation for your GIS distribution project.<\/strong><\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<ul>\n<li>GIS Optimized: High-current 1250A design for gas-insulated cabinets.<\/li>\n<li>Stable Performance: Compliant with GB 3804-2017 for long-term reliability.<\/li>\n<li>Easy Integration: Compact structure ideal for combined switch-fuse units.<\/li>\n<\/ul>","protected":false},"featured_media":3259,"comment_status":"open","ping_status":"closed","template":"","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"NU-FH-12-1250-25 Load Switch | Gas-Insulated Switchgear LBS","_seopress_titles_desc":"Industrial-grade NU-FH-12-1250-25 Load Break Switch for 12kV\/1250A gas-insulated switchgear. Reliable power control for GIS cabinets and combined switch-fuse units.","_seopress_robots_index":""},"product_brand":[],"product_cat":[26,60],"product_tag":[280,268,282,281,279],"class_list":{"0":"post-3256","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-gas-insulated-switchgear-components","7":"product_cat-load-switch-gas-insulated-switchgear-components","8":"product_tag-12kv-load-switch","9":"product_tag-gas-insulated-switchgear","10":"product_tag-gis-components","11":"product_tag-lbs-1250a","12":"product_tag-nu-fh-12-1250-25","14":"first","15":"instock","16":"shipping-taxable","17":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/niunielec.com\/ru\/wp-json\/wp\/v2\/product\/3256","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/niunielec.com\/ru\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/niunielec.com\/ru\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/niunielec.com\/ru\/wp-json\/wp\/v2\/comments?post=3256"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/niunielec.com\/ru\/wp-json\/wp\/v2\/media\/3259"}],"wp:attachment":[{"href":"https:\/\/niunielec.com\/ru\/wp-json\/wp\/v2\/media?parent=3256"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/niunielec.com\/ru\/wp-json\/wp\/v2\/product_brand?post=3256"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/niunielec.com\/ru\/wp-json\/wp\/v2\/product_cat?post=3256"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/niunielec.com\/ru\/wp-json\/wp\/v2\/product_tag?post=3256"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}