{"id":1991,"date":"2021-12-23T11:12:20","date_gmt":"2021-12-23T03:12:20","guid":{"rendered":"https:\/\/www.wolunelectric.com\/?post_type=product&#038;p=1991"},"modified":"2026-05-20T11:00:00","modified_gmt":"2026-05-20T03:00:00","slug":"fn7-12-24-dr-12kv-24kv-indoor-load-break-switch-lbs","status":"publish","type":"product","link":"https:\/\/www.wolunelectric.com\/ar\/product\/fn7-12-24-dr-12kv-24kv-indoor-load-break-switch-lbs\/","title":{"rendered":"\u0645\u0641\u062a\u0627\u062d \u0643\u0633\u0631 \u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u062f\u0627\u062e\u0644\u064a FN7-12\/24 DR 12kV 24kV 24kV (LBS)"},"content":{"rendered":"<p data-start=\"57\" data-end=\"426\">\n<p data-start=\"57\" data-end=\"426\">The <strong data-start=\"61\" data-end=\"108\">FN7-12\/24 DR Indoor Load Break Switch (LBS)<\/strong> is a medium-voltage indoor switching device designed for <strong data-start=\"166\" data-end=\"210\">12kV and 24kV power distribution systems<\/strong>.<\/p>\n<p data-start=\"57\" data-end=\"426\">It is widely used in switchgear panels, RMU systems, substations, industrial plants, and transformer protection applications. The \u201cDR\u201d type generally refers to a <strong data-start=\"374\" data-end=\"425\">load break switch combined with fuse protection<\/strong>.<\/p>\n<div class=\"no-scrollbar flex min-h-36 flex-nowrap gap-0.5 overflow-auto sm:gap-1 sm:overflow-hidden xl:min-h-44 mt-1 mb-5 not-first:mt-4\">\n<div class=\"border-token-border-default relative w-32 shrink-0 overflow-hidden rounded-xl border-[0.5px] md:shrink max-h-64 sm:w-[calc((100%-0.5rem)\/3)] rounded-s-xl\">\n<div class=\"group\/search-image @container\/search-image relative rounded-[inherit] h-full w-full\"><\/div>\n<\/div>\n<\/div>\n<h2 data-section-id=\"1ma7m6t\" data-start=\"470\" data-end=\"485\">Key Features<\/h2>\n<ul data-start=\"487\" data-end=\"892\">\n<li data-section-id=\"10isgws\" data-start=\"487\" data-end=\"519\">Rated voltage: <strong data-start=\"504\" data-end=\"519\">12kV \/ 24kV<\/strong><\/li>\n<li data-section-id=\"nkoms3\" data-start=\"520\" data-end=\"552\">Rated current: <strong data-start=\"537\" data-end=\"552\">400A \/ 630A<\/strong><\/li>\n<li data-section-id=\"16zxzd4\" data-start=\"553\" data-end=\"577\">Frequency: <strong data-start=\"566\" data-end=\"577\">50\/60Hz<\/strong><\/li>\n<li data-section-id=\"18xhi8t\" data-start=\"578\" data-end=\"604\">Indoor installation type<\/li>\n<li data-section-id=\"9vfj0n\" data-start=\"605\" data-end=\"648\">Compact structure for switchgear cabinets<\/li>\n<li data-section-id=\"qgq5cr\" data-start=\"649\" data-end=\"689\">Reliable arc-extinguishing performance<\/li>\n<li data-section-id=\"1skwn0u\" data-start=\"690\" data-end=\"745\">Fuse combination available for transformer protection<\/li>\n<li data-section-id=\"107jpdq\" data-start=\"746\" data-end=\"772\">Optional earthing switch<\/li>\n<li data-section-id=\"1hpo26m\" data-start=\"773\" data-end=\"813\">Mechanical interlock system for safety<\/li>\n<li data-section-id=\"yr2nah\" data-start=\"814\" data-end=\"892\">IEC standard compliant (IEC 62271-105)<\/li>\n<\/ul>\n<h2 data-section-id=\"22t2tj\" data-start=\"894\" data-end=\"914\">Main Applications<\/h2>\n<ul data-start=\"916\" data-end=\"1109\">\n<li data-section-id=\"1k45jyg\" data-start=\"916\" data-end=\"952\">Medium voltage distribution panels<\/li>\n<li data-section-id=\"reme7j\" data-start=\"953\" data-end=\"976\">Ring Main Units (RMU)<\/li>\n<li data-section-id=\"1tsy3gl\" data-start=\"977\" data-end=\"1008\">Transformer feeder protection<\/li>\n<li data-section-id=\"1eun78i\" data-start=\"1009\" data-end=\"1033\">Industrial substations<\/li>\n<li data-section-id=\"oi6pd7\" data-start=\"1034\" data-end=\"1069\">Commercial building power systems<\/li>\n<li data-section-id=\"1j7fwiv\" data-start=\"1070\" data-end=\"1109\">Renewable energy distribution systems<\/li>\n<\/ul>\n<h2 data-section-id=\"1cgu054\" data-start=\"1111\" data-end=\"1138\">\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0641\u0646\u064a\u0629<\/h2>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" style=\"height: 410px;\" width=\"747\" data-start=\"1140\" data-end=\"1570\">\n<thead data-start=\"1140\" data-end=\"1170\">\n<tr data-start=\"1140\" data-end=\"1170\">\n<th class=\"last:pe-10\" data-start=\"1140\" data-end=\"1147\" data-col-size=\"sm\">\u0627\u0644\u0628\u0646\u062f<\/th>\n<th class=\"last:pe-10\" data-start=\"1147\" data-end=\"1158\" data-col-size=\"sm\">FN7-12DR<\/th>\n<th class=\"last:pe-10\" data-start=\"1158\" data-end=\"1170\" data-col-size=\"sm\">FN7-24DR<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"1185\" data-end=\"1570\">\n<tr data-start=\"1185\" data-end=\"1216\">\n<td data-start=\"1185\" data-end=\"1201\" data-col-size=\"sm\">\u0627\u0644\u0641\u0648\u0644\u062a\u064a\u0629 \u0627\u0644\u0645\u0642\u062f\u0631\u0629<\/td>\n<td data-start=\"1201\" data-end=\"1208\" data-col-size=\"sm\">12 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a<\/td>\n<td data-start=\"1208\" data-end=\"1216\" data-col-size=\"sm\">24 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a<\/td>\n<\/tr>\n<tr data-start=\"1217\" data-end=\"1255\">\n<td data-start=\"1217\" data-end=\"1233\" data-col-size=\"sm\">\u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0642\u0646\u0646<\/td>\n<td data-start=\"1233\" data-end=\"1247\" data-col-size=\"sm\">400A \/ 630A<\/td>\n<td data-col-size=\"sm\" data-start=\"1247\" data-end=\"1255\">630A<\/td>\n<\/tr>\n<tr data-start=\"1256\" data-end=\"1295\">\n<td data-start=\"1256\" data-end=\"1274\" data-col-size=\"sm\">\u0627\u0644\u062a\u0631\u062f\u062f \u0627\u0644\u0645\u0642\u062f\u0631<\/td>\n<td data-col-size=\"sm\" data-start=\"1274\" data-end=\"1284\">50\/60Hz<\/td>\n<td data-col-size=\"sm\" data-start=\"1284\" data-end=\"1295\">50\/60Hz<\/td>\n<\/tr>\n<tr data-start=\"1296\" data-end=\"1351\">\n<td data-start=\"1296\" data-end=\"1327\" data-col-size=\"sm\">Short-Circuit Making Current<\/td>\n<td data-col-size=\"sm\" data-start=\"1327\" data-end=\"1343\">31.5kA \/ 50kA<\/td>\n<td data-col-size=\"sm\" data-start=\"1343\" data-end=\"1351\">50kA<\/td>\n<\/tr>\n<tr data-start=\"1352\" data-end=\"1398\">\n<td data-start=\"1352\" data-end=\"1383\" data-col-size=\"sm\">Short-Time Withstand Current<\/td>\n<td data-col-size=\"sm\" data-start=\"1383\" data-end=\"1390\">20kA<\/td>\n<td data-col-size=\"sm\" data-start=\"1390\" data-end=\"1398\">25kA<\/td>\n<\/tr>\n<tr data-start=\"1399\" data-end=\"1460\">\n<td data-start=\"1399\" data-end=\"1437\" data-col-size=\"sm\">Lightning Impulse Withstand Voltage<\/td>\n<td data-col-size=\"sm\" data-start=\"1437\" data-end=\"1447\">75\/85kV<\/td>\n<td data-col-size=\"sm\" data-start=\"1447\" data-end=\"1460\">125\/145kV<\/td>\n<\/tr>\n<tr data-start=\"1461\" data-end=\"1514\">\n<td data-start=\"1461\" data-end=\"1498\" data-col-size=\"sm\">Fuse Combination Breaking Capacity<\/td>\n<td data-col-size=\"sm\" data-start=\"1498\" data-end=\"1506\">1600A<\/td>\n<td data-col-size=\"sm\" data-start=\"1506\" data-end=\"1514\">900A<\/td>\n<\/tr>\n<tr data-start=\"1515\" data-end=\"1570\">\n<td data-start=\"1515\" data-end=\"1533\" data-col-size=\"sm\">Mechanical Life<\/td>\n<td data-start=\"1533\" data-end=\"1551\" data-col-size=\"sm\">2000 operations<\/td>\n<td data-col-size=\"sm\" data-start=\"1551\" data-end=\"1570\">2000 operations<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p data-start=\"1572\" data-end=\"1609\">\n<h2 data-section-id=\"7ofzv1\" data-start=\"1611\" data-end=\"1627\">\u0645\u0639\u0646\u0649 \u0627\u0644\u0646\u0645\u0648\u0630\u062c<\/h2>\n<p data-start=\"1629\" data-end=\"1652\">Typical model examples:<\/p>\n<ul data-start=\"1654\" data-end=\"1718\">\n<li data-section-id=\"1poi1c0\" data-start=\"1654\" data-end=\"1677\"><strong data-start=\"1656\" data-end=\"1677\">FN7-12DR\/400-31.5<\/strong><\/li>\n<li data-section-id=\"ttx3qy\" data-start=\"1678\" data-end=\"1699\"><strong data-start=\"1680\" data-end=\"1699\">FN7-12DR\/630-20<\/strong><\/li>\n<li data-section-id=\"1ch83m8\" data-start=\"1700\" data-end=\"1718\"><strong data-start=\"1702\" data-end=\"1718\">FN7-24DR\/630<\/strong><\/li>\n<\/ul>\n<p data-start=\"1720\" data-end=\"1728\">Meaning:<\/p>\n<ul data-start=\"1729\" data-end=\"1948\">\n<li data-section-id=\"qyir03\" data-start=\"1729\" data-end=\"1781\"><strong data-start=\"1731\" data-end=\"1738\">FN7<\/strong> = Indoor AC high-voltage load break switch<\/li>\n<li data-section-id=\"chmpln\" data-start=\"1782\" data-end=\"1811\"><strong data-start=\"1784\" data-end=\"1795\">12 \/ 24<\/strong> = Rated voltage<\/li>\n<li data-section-id=\"1in63rd\" data-start=\"1812\" data-end=\"1837\"><strong data-start=\"1814\" data-end=\"1819\">D<\/strong> = Earthing switch<\/li>\n<li data-section-id=\"4e07qz\" data-start=\"1838\" data-end=\"1864\"><strong data-start=\"1840\" data-end=\"1845\">R<\/strong> = Fuse combination<\/li>\n<li data-section-id=\"1y3x5tg\" data-start=\"1865\" data-end=\"1896\"><strong data-start=\"1867\" data-end=\"1880\">400 \/ 630<\/strong> = Rated current<\/li>\n<li data-section-id=\"bun0iv\" data-start=\"1897\" data-end=\"1948\"><strong data-start=\"1899\" data-end=\"1912\">20 \/ 31.5<\/strong> = Short-time withstand current (kA)<\/li>\n<\/ul>\n<h2 data-section-id=\"dysc5y\" data-start=\"1950\" data-end=\"1971\">Product Advantages<\/h2>\n<h3 data-section-id=\"vwwbzm\" data-start=\"1973\" data-end=\"1997\">Compact and Reliable<\/h3>\n<p data-start=\"1998\" data-end=\"2066\">Suitable for compact switchgear designs and medium-voltage cabinets.<\/p>\n<h3 data-section-id=\"1rgs9ix\" data-start=\"2068\" data-end=\"2099\">Fuse Protection Combination<\/h3>\n<p data-start=\"2100\" data-end=\"2215\">The DR version works with current-limiting fuses to protect transformers against overload and short-circuit faults.<\/p>\n<h3 data-section-id=\"1hfuwrw\" data-start=\"2217\" data-end=\"2244\">High Safety Performance<\/h3>\n<p data-start=\"2245\" data-end=\"2326\">Interlocking structure prevents incorrect operation and improves operator safety.<\/p>\n<h3 data-section-id=\"cvgblj\" data-start=\"2328\" data-end=\"2349\">Long Service Life<\/h3>\n<p data-start=\"2350\" data-end=\"2443\">Mechanical endurance typically reaches 2000 operations.<\/p>\n<h2><strong>\u0627\u0644\u0645\u062e\u0637\u0637 \u0627\u0644\u062a\u0641\u0635\u064a\u0644\u064a \u0648\u0627\u0644\u0631\u0633\u0645<\/strong><\/h2>\n<p>&nbsp;<\/p>\n<p><a class=\"fancybox\" href=\"https:\/\/cdn.globalso.com\/ghorit-elec\/640275c9.png\"><img decoding=\"async\" class=\"alignnone size-full wp-image-1661\" src=\"https:\/\/cdn.globalso.com\/ghorit-elec\/640275c9.png\" alt=\"\u0642\u062f\u0645\" \/><\/a><\/p>\n<p>1. \u0633\u0643\u064a\u0646 \u0625\u0637\u0641\u0627\u0621 \u0627\u0644\u0642\u0648\u0633 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a 2. \u062c\u0632\u0621 \u062a\u0644\u0627\u0645\u0633 \u0627\u0644\u0642\u0648\u0633 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0648\u063a\u0631\u0641\u0629 \u0625\u0637\u0641\u0627\u0621 \u0627\u0644\u0642\u0648\u0633 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a 3. \u0627\u0644\u0639\u0627\u0632\u0644 4. \u0627\u0644\u0642\u0627\u0639\u062f\u0629<\/p>\n<p>5. \u0633\u0643\u064a\u0646 \u0627\u0644\u062a\u0644\u0627\u0645\u0633 \u0627\u0644\u062f\u064a\u0646\u0627\u0645\u064a\u0643\u064a 6. \u0633\u0643\u064a\u0646 \u0627\u0644\u062a\u0644\u0627\u0645\u0633 \u0627\u0644\u062b\u0627\u0628\u062a 7. \u062c\u0647\u0627\u0632 \u062a\u062e\u0632\u064a\u0646 \u0637\u0627\u0642\u0629 \u0627\u0644\u0632\u0646\u0628\u0631\u0643 (\u062f\u0627\u062e\u0644 \u063a\u0644\u0627\u0641 \u0627\u0644\u0645\u062d\u0648\u0631 \u0627\u0644\u0631\u0626\u064a\u0633\u064a) 8. \u0630\u0631\u0627\u0639 \u062a\u062f\u0648\u064a\u0631 \u0627\u0644\u0633\u0643\u064a\u0646 \u0627\u0644\u0631\u0626\u064a\u0633\u064a<\/p>\n<p><strong>\u0627\u0644\u0631\u0633\u0645 1 \u0645\u062e\u0637\u0637 \u0645\u0641\u062a\u0627\u062d \u0627\u0644\u062a\u062d\u0645\u064a\u0644 FN7-12 \u0648\u062d\u062c\u0645 \u0627\u0644\u062a\u0631\u0643\u064a\u0628<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-1993\" src=\"http:\/\/www.wolunelectric.com\/wp-content\/uploads\/2021\/12\/FN7-24-24KV-LOAD-BREAK-SWITCH.jpg\" alt=\"\u0645\u0641\u062a\u0627\u062d \u0643\u0633\u0631 \u0627\u0644\u062d\u0645\u0644 FN7 24 24kv 24kv\" width=\"749\" height=\"505\" srcset=\"https:\/\/www.wolunelectric.com\/wp-content\/uploads\/2021\/12\/FN7-24-24KV-LOAD-BREAK-SWITCH.jpg 749w, https:\/\/www.wolunelectric.com\/wp-content\/uploads\/2021\/12\/FN7-24-24KV-LOAD-BREAK-SWITCH-300x202.jpg 300w, https:\/\/www.wolunelectric.com\/wp-content\/uploads\/2021\/12\/FN7-24-24KV-LOAD-BREAK-SWITCH-600x405.jpg 600w\" sizes=\"(max-width: 749px) 100vw, 749px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>1- \u0627\u0644\u0645\u062d\u0648\u0631 \u0627\u0644\u0631\u0626\u064a\u0633\u064a 2- \u0627\u0644\u0642\u0636\u064a\u0628 \u0627\u0644\u0639\u0627\u0632\u0644 3- \u0627\u0644\u0634\u0641\u0631\u0629 4- \u0627\u0644\u062a\u0644\u0627\u0645\u0633 5- \u0627\u0644\u062a\u0644\u0627\u0645\u0633 \u0627\u0644\u0642\u0648\u0633\u064a<br \/>\n6- \u062d\u062c\u0631\u0629 \u0625\u0637\u0641\u0627\u0621 \u0627\u0644\u0642\u0648\u0633 7- \u0622\u0644\u064a\u0629 \u0627\u0644\u0637\u0627\u0642\u0629 \u0627\u0644\u0645\u062e\u0632\u0646\u0629 \u0627\u0644\u0632\u0646\u0628\u0631\u0643\u064a\u0629<br \/>\n8- \u0630\u0631\u0627\u0639 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0639\u0644\u0649\/\u0625\u064a\u0642\u0627\u0641 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/p>\n<p align=\"left\">","protected":false},"excerpt":{"rendered":"<p>FN7-12\/24 DR indoor load break switch is designed for medium-voltage distribution systems up to 24kV.<\/p>\n<p>It features compact structure, reliable load switching performance, optional fuse protection, and safe operation for switchgear and transformer applications.<\/p>","protected":false},"featured_media":1998,"template":"","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"FN7-12\/24 DR Indoor Load Break Switch | 12kV 24kV High Voltage LBS","_seopress_titles_desc":"FN7-12\/24 DR indoor load break switch for 12kV and 24kV medium voltage power systems. Reliable LBS with fuse combination for switchgear, RMU, and transformer protection.","_seopress_robots_index":""},"product_brand":[],"product_cat":[46],"product_tag":[],"class_list":{"0":"post-1991","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-high-voltage-disconnect-switch","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/product\/1991","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/media\/1998"}],"wp:attachment":[{"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/media?parent=1991"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/product_brand?post=1991"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/product_cat?post=1991"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/product_tag?post=1991"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}