{"id":549,"date":"2026-10-04T10:57:24","date_gmt":"2026-10-04T10:57:24","guid":{"rendered":"https:\/\/liqele.com\/products\/load-break-switches\/"},"modified":"2026-11-05T09:43:47","modified_gmt":"2026-11-05T09:43:47","slug":"load-break-switches","status":"publish","type":"page","link":"https:\/\/liqele.com\/es\/products\/load-break-switches\/","title":{"rendered":"Interruptores de corte en carga"},"content":{"rendered":"\n<div class=\"liq-page alignfull\" data-ic-layout=\"directory\" data-liq-page=\"load-break-switches\" data-product-pillar=\"family\">\n<section aria-labelledby=\"load-switch-title\" class=\"lp-hero ic-hero\">\n<img decoding=\"async\" alt=\"Load break switch assemblies and components stored in the Liqiang workshop\" class=\"ic-hero-image\" fetchpriority=\"high\" height=\"1280\" src=\"https:\/\/liqele.com\/wp-content\/plugins\/liq-site-components\/assets\/load-switch-workshop-hero-1706.webp\" width=\"1706\"\/>\n<div class=\"lp-wrap ic-hero-inner\">\n<div class=\"ic-hero-copy\"><p class=\"ic-location\">Indoor load switching<\/p><h1 id=\"load-switch-title\">Load break<br\/><span>switches.<\/span><\/h1><p class=\"lp-lead\">Liqiang manufactures indoor load break switches for medium-voltage switchgear. Compare air-blast and vacuum load-switch arrangements for indoor cabinet integration. Define the switching duty and any fuse-combination requirement, then coordinate the mounting, operation and interlocks.<\/p><div class=\"lp-actions\"><a class=\"lp-button\" href=\"#load-models\">Compare load-switch models<\/a><a class=\"lp-button-secondary\" href=\"\/technical-support\/downloads\/\">View document options<\/a><\/div><\/div>\n<p class=\"ic-hero-caption\">Load-switch assemblies in the Liqiang workshop. Arrangements vary by model.<\/p>\n<\/div>\n<\/section>\n<nav aria-label=\"Explore load break switches\" class=\"ic-contents\"><div class=\"lp-wrap\"><a href=\"#load-switch-models\">Models<\/a><a href=\"#load-switch-overview\">Configuration<\/a><a href=\"#load-switch-selection\">Requirements<\/a><a href=\"#load-switch-inspection\">Manufacturing<\/a><a href=\"#load-switch-manuals\">Documents<\/a><\/div><\/nav>\n<section aria-labelledby=\"load-models\" class=\"lp-section ic-model-section\" id=\"load-switch-models\"><div class=\"lp-wrap\">\n<div class=\"ic-section-heading\"><div><h2 id=\"load-models\">Indoor load break switch <span>models<\/span><\/h2><p>Compare air-blast and vacuum arrangements for indoor cabinets. Load-switch and switch-fuse configurations require their own designation, ratings and installation drawing.<\/p><\/div><\/div>\n<div class=\"ic-model-grid ip-family-models-2\">\n<article class=\"ic-model\" id=\"load-switch-fkn12\"><a aria-label=\"View FKN12 details\" class=\"ic-model-image-link\" href=\"\/products\/fkn12\/\"><figure class=\"ic-model-figure\"><img decoding=\"async\" alt=\"FKN12 indoor air-blast load break switch, front view\" height=\"480\" loading=\"lazy\" src=\"https:\/\/liqele.com\/wp-content\/plugins\/liq-site-components\/assets\/load-switch-fkn12-card-720.webp\" width=\"720\"\/><figcaption>FKN12 assembly example<\/figcaption><\/figure><\/a><div class=\"ic-model-body\"><a class=\"ic-model-title-link\" href=\"\/products\/fkn12\/\"><h3>FKN12<\/h3><\/a><p class=\"ic-model-type\">Air-blast load switching<\/p><p class=\"ic-model-difference\">Choose the FKN load-switch or FKRN switch-fuse arrangement, then confirm mounting and operating direction.<\/p><div class=\"ic-model-links\"><div class=\"ic-model-link-row\"><a class=\"ic-text-link\" href=\"\/products\/fkn12\/\">View FKN12 details<\/a><\/div><\/div><\/div><\/article>\n<article class=\"ic-model\" id=\"load-switch-fzn25\"><a aria-label=\"View FZN25 details\" class=\"ic-model-image-link\" href=\"\/products\/fzn25\/\"><figure class=\"ic-model-figure\"><img decoding=\"async\" alt=\"FZN25 indoor vacuum load break switch, front angle view\" height=\"480\" loading=\"lazy\" src=\"https:\/\/liqele.com\/wp-content\/plugins\/liq-site-components\/assets\/load-switch-fzn25-card-720.webp\" width=\"720\"\/><figcaption>FZN25 assembly example<\/figcaption><\/figure><\/a><div class=\"ic-model-body\"><a class=\"ic-model-title-link\" href=\"\/products\/fzn25\/\"><h3>FZN25<\/h3><\/a><p class=\"ic-model-type\">Vacuum load switching<\/p><p class=\"ic-model-difference\">Specify the FZN load-switch or FZRN switch-fuse arrangement, with the required earthing, operation and auxiliary contacts.<\/p><div class=\"ic-model-links\"><div class=\"ic-model-link-row\"><a class=\"ic-text-link\" href=\"\/products\/fzn25\/\">View FZN25 details<\/a><\/div><\/div><\/div><\/article>\n<article class=\"ic-model\" id=\"load-switch-fzn64\"><a aria-label=\"View FZN64 details\" class=\"ic-model-image-link\" href=\"\/products\/fzn64\/\"><figure class=\"ic-model-figure\"><img decoding=\"async\" alt=\"FZN64-12GD vacuum load break switch image from the original 500-cabinet manual\" height=\"480\" loading=\"lazy\" src=\"https:\/\/liqele.com\/wp-content\/plugins\/liq-site-components\/assets\/load-switch-fzn64-manual-card-720.webp\" width=\"720\"\/><figcaption>FZN64-12GD \u00b7 original manual image<\/figcaption><\/figure><\/a><div class=\"ic-model-body\"><a class=\"ic-model-title-link\" href=\"\/products\/fzn64\/\"><h3>FZN64<\/h3><\/a><p class=\"ic-model-type\">Vacuum \/ 500 mm cabinet-width edition<\/p><p class=\"ic-model-difference\">Match the FZN64 or FZRN64 designation to the cabinet, mounting and operating drawings for the documented arrangement.<\/p><div class=\"ic-model-links\"><div class=\"ic-model-link-row\"><a class=\"ic-text-link\" href=\"\/products\/fzn64\/\">View FZN64 details<\/a><\/div><\/div><\/div><\/article>\n<article class=\"ic-model\" id=\"load-switch-vzf\"><a aria-label=\"View VZF details\" class=\"ic-model-image-link\" href=\"\/products\/vzf\/\"><figure class=\"ic-model-figure\"><img decoding=\"async\" alt=\"VZF embedded-pole load break switch, rear view\" height=\"480\" loading=\"lazy\" src=\"https:\/\/liqele.com\/wp-content\/plugins\/liq-site-components\/assets\/load-switch-vzf-card-720.webp\" width=\"720\"\/><figcaption>VZF assembly example \u00b7 rear view<\/figcaption><\/figure><\/a><div class=\"ic-model-body\"><a class=\"ic-model-title-link\" href=\"\/products\/vzf\/\"><h3>VZF<\/h3><\/a><p class=\"ic-model-type\">Embedded-pole \/ middle-mounted<\/p><p class=\"ic-model-difference\">Confirm the exact load-switch or switch-fuse designation, cabinet layout, fuse coordination and control interfaces.<\/p><div class=\"ic-model-links\"><div class=\"ic-model-link-row\"><a class=\"ic-text-link\" href=\"\/products\/vzf\/\">View VZF details<\/a><\/div><\/div><\/div><\/article>\n<\/div>\n<\/div><\/section>\n<section aria-labelledby=\"load-switch-overview-title\" class=\"lp-section ip-section ip-overview-section\" data-range-layout=\"comparison\" id=\"load-switch-overview\"><style data-family-range-layout=\"\">\/* Indoor SEC3: comparison first, concept illustration alongside. *\/\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-section-heading {\n  display: grid;\n  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);\n  gap: 48px;\n  align-items: end;\n  margin-bottom: 40px;\n}\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-section-heading h2 { max-width: 20ch; margin: 0; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-section-heading > p { max-width: 65ch; margin: 0; font-size: 15px; line-height: 1.75; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-range-overview {\n  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);\n  gap: 40px;\n  align-items: stretch;\n}\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-range-table { border: 0; background: transparent; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-range-table table { width: 100%; margin: 0; border: 0; border-collapse: collapse; font-size: 15px; line-height: 1.7; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-range-table caption { padding: 0 0 16px; border: 0; background: transparent; text-align: left; font-size: 15px; font-weight: 600; color: #000; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-range-table thead { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-range-table tbody tr { display: grid; grid-template-columns: 90px minmax(0, 1fr); gap: 8px 20px; padding: 24px 0; border-top: 1px solid #D9DFE2; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-range-table tbody tr:last-child { border-bottom: 1px solid #D9DFE2; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-range-table tbody :is(th, td) { display: block; width: auto; padding: 0; border: 0; background: transparent; text-align: left; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-range-table tbody th { grid-row: 1 \/ 3; color: #000; font-size: 25px; font-weight: 700; line-height: 1.25; letter-spacing: -.03em; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-range-table tbody td:nth-child(2) { font-weight: 600; line-height: 1.5; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-range-table tbody td:nth-child(3) { font-size: 14px; line-height: 1.7; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-range-table a { display: inline-block; padding-block: 3px; color: #B92921; text-underline-offset: 4px; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-range-table a:hover { color: #941F19; text-decoration: underline; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-selection-figure {\n  display: flex;\n  flex-direction: column;\n  justify-content: center;\n  align-self: stretch;\n  width: 100%;\n  max-width: none;\n  margin: 0;\n  padding: 24px;\n  border: 0;\n  background: #F3F5F6;\n  box-shadow: none;\n}\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-selection-figure img { display: block; width: 100%; height: auto; max-height: 440px; object-fit: contain; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-selection-figure figcaption { margin-top: 16px; padding: 14px 0 0; border-top: 1px solid #D9DFE2; text-align: left; font-size: 12px; font-weight: 400; line-height: 1.6; color: #000; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-structure-notes { gap: 40px; margin-top: 32px; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-structure-notes summary { min-height: 60px; padding-block: 18px; font-size: 20px; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] :is(a, summary):focus-visible { outline: 2px solid #B92921; outline-offset: 4px; }\n@media (max-width: 900px) {\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-section-heading { grid-template-columns: minmax(0, 1fr); gap: 20px; align-items: start; margin-bottom: 32px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-section-heading h2 { max-width: 26ch; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-range-overview { grid-template-columns: minmax(0, 1fr); gap: 28px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-selection-figure { max-width: 560px; justify-self: center; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-structure-notes { gap: 28px; }\n}\n@media (max-width: 700px) {\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-range-table tbody tr { grid-template-columns: 76px minmax(0, 1fr); gap: 6px 12px; padding-block: 20px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-range-table tbody th { font-size: 22px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-range-table tbody td:nth-child(2) { font-size: 14px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-selection-figure { max-width: none; padding: 20px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-structure-notes { gap: 24px; }\n}\n\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-range-table tbody tr { grid-template-columns: 126px minmax(0, 1fr); }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-range-table tbody th { font-size: 21px; }\n@media(max-width:700px){.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-range-table tbody tr { grid-template-columns: minmax(0,1fr); }.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-overview[data-range-layout=\"comparison\"] .ip-range-table tbody th { grid-row:auto; font-size:20px; }}\n<\/style><div class=\"lp-wrap\">\n<div class=\"ip-section-heading\"><h2 id=\"load-switch-overview-title\">Load switches and <span>switch-fuse combinations<\/span><\/h2><p>Choose the switching function first, then compare the interruption medium, construction and cabinet arrangement for your indoor medium-voltage installation.<\/p><\/div>\n<div class=\"ip-range-overview\"><div class=\"ip-range-table\" id=\"load-switch-construction\"><table><caption>Documented load-switch families and arrangement checks<\/caption><thead><tr><th scope=\"col\">Family<\/th><th scope=\"col\">Interruption \/ construction<\/th><th scope=\"col\">Configuration review<\/th><\/tr><\/thead><tbody>\n<tr><th scope=\"row\"><a href=\"\/products\/fkn12\/\">FKN12<\/a><\/th><td>Air-blast<\/td><td>FKN load switch \/ FKRN switch-fuse. Confirm mounting and operating direction.<\/td><\/tr>\n<tr><th scope=\"row\"><a href=\"\/products\/fzn25\/\">FZN25<\/a><\/th><td>Vacuum<\/td><td>FZN25 load switch \/ FZRN25 switch-fuse. Confirm mounting and any earthing arrangement.<\/td><\/tr>\n<tr><th scope=\"row\"><a href=\"\/products\/fzn64\/\">FZN64<\/a><\/th><td>Vacuum<\/td><td>FZN64 \/ FZRN64 variants; match the cabinet drawing. Linked manual: 500 mm cabinet-width edition.<\/td><\/tr>\n<tr><th scope=\"row\"><a href=\"\/products\/vzf\/\">VZF<\/a><\/th><td>Vacuum; embedded-pole construction<\/td><td>Middle-mounted layout; confirm the exact load-switch or switch-fuse version.<\/td><\/tr>\n<\/tbody><\/table><\/div>\n<figure class=\"ip-selection-figure\"><img decoding=\"async\" alt=\"AI concept illustration of a generic medium-voltage switch-fuse cabinet\" height=\"900\" loading=\"lazy\" src=\"https:\/\/liqele.com\/wp-content\/plugins\/liq-site-components\/assets\/load-switch-cabinet-concept-1200.webp\" width=\"1200\"\/><figcaption>Concept illustration \u00b7 AI-generated. Cabinet layout varies by model.<\/figcaption><\/figure>\n\n<\/div>\n<div class=\"ip-structure-notes\">\n<details><summary>Load switching and fuse protection<\/summary><p>The bare load switch performs the documented load-switching duty. Fault withstand and making ratings are separate from short-circuit breaking capability. A switch-fuse combination\u2019s short-circuit breaking rating must not be applied to the bare switch.<\/p><p>A switch-fuse combination coordinates the load switch with current-limiting fuses to provide its documented fault-breaking function. Confirm fuse type, striker compatibility and coordination limits; neither the bare switch\u2019s ratings nor a fuse\u2019s standalone rating establishes the complete combination\u2019s performance.<\/p><\/details>\n<details><summary>Construction, operation and interlocks<\/summary><p>Air-blast and vacuum describe current interruption. Embedded poles describe insulation construction, while middle-mounted describes the cabinet arrangement; neither label replaces the switching-duty specification.<\/p><p>Mounting direction, operating side, earthing options and interlocks follow the selected version and cabinet drawing. A similar appearance does not establish a shared operating sequence or replacement fit.<\/p><\/details>\n<\/div>\n<\/div><\/section>\n<section aria-labelledby=\"load-switch-selection-title\" class=\"lp-section ip-section ip-selection-section\" data-selection-layout=\"visual\" id=\"load-switch-selection\"><style data-family-selection-layout=\"\">\/* Indoor SEC4: cabinet context, electrical review, interfaces, project files. *\/\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] { padding-top: 80px; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] > .lp-wrap { padding-bottom: 0; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-section-heading { max-width: 900px; margin-bottom: 40px; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-section-heading h2 { max-width: 25ch; margin: 0; text-wrap: balance; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-section-heading > p { max-width: 70ch; margin-top: 20px; font-size: 16px; line-height: 1.75; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-selection-workspace { display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr); gap: 40px; align-items: start; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-cabinet-context { min-width: 0; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-cabinet-figure { margin: 0; padding: 20px; background: #fff; border: 0; box-shadow: none; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-cabinet-figure img { display: block; width: 100%; height: auto; object-fit: contain; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-cabinet-figure figcaption { margin: 0; padding: 16px 0 0; font-size: 12px; line-height: 1.6; color: #000; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-integration-details { display: block; margin: 24px 0 0; padding: 0; border: 0; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-integration-details details { margin: 0; border: 0; border-top: 1px solid #D9DFE2; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-integration-details details:last-child { border-bottom: 1px solid #D9DFE2; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-integration-details summary { min-height: 58px; padding: 18px 0; font-size: 18px; line-height: 1.3; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-integration-details details p { padding: 0 0 20px; font-size: 15px; line-height: 1.75; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-rating-panel { min-width: 0; padding: 28px 32px; border: 0; background: #fff; box-shadow: none; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-rating-panel > h3 { margin: 0 0 20px; font-size: 24px; line-height: 1.3; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-rating-grid { display: block; margin: 0; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-rating-grid > div { display: grid; grid-template-columns: minmax(120px, .75fr) minmax(0, 1.25fr); gap: 20px; padding: 20px 0; border-top: 1px solid #D9DFE2; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-rating-grid dt { margin: 0; font-size: 16px; font-weight: 700; line-height: 1.5; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-rating-grid dd { margin: 0; font-size: 15px; line-height: 1.75; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-rating-note { margin: 0; padding-top: 20px; border-top: 1px solid #D9DFE2; font-size: 14px; line-height: 1.75; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-input-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; margin: 40px 0 0; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-input-grid > div { padding-top: 24px; border-top: 1px solid #D9DFE2; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-input-grid dt { margin: 0 0 12px; font-size: 22px; font-weight: 700; line-height: 1.3; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-input-grid dd { margin: 0; max-width: 70ch; font-size: 15px; line-height: 1.75; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] > .ip-project-reference { margin-top: 48px; padding: 40px 0; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] > .ip-project-reference > .lp-wrap { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 64px; align-items: start; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-project-files h3 { max-width: 28ch; margin: 0 0 16px; font-size: 24px; line-height: 1.3; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-project-files p { margin: 0; max-width: 70ch; font-size: 15px; line-height: 1.75; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-project-files .ip-project-actions { margin-top: 24px; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-project-files .ip-project-actions .lp-button { color: #fff; text-decoration: none; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-project-scope { margin: 0; padding: 0; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-project-scope dt { margin: 0 0 16px; color: #fff; font-size: 22px; font-weight: 700; line-height: 1.3; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-project-scope dd { margin: 0; color: #e1e1e1; font-size: 15px; line-height: 1.75; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] :is(a, summary):focus-visible { outline: 2px solid #B92921; outline-offset: 4px; }\n@media (max-width: 1000px) {\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-selection-workspace { grid-template-columns: minmax(0, 1fr); gap: 32px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-cabinet-context { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 32px; align-items: center; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-integration-details { margin: 0; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-rating-grid > div { grid-template-columns: minmax(140px, .55fr) minmax(0, 1.45fr); }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] > .ip-project-reference > .lp-wrap { gap: 36px; }\n}\n@media (max-width: 700px) {\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] { padding-top: 64px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-section-heading { margin-bottom: 28px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-section-heading > p { margin-top: 16px; font-size: 15px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-cabinet-context { display: block; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-cabinet-figure { padding: 16px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-integration-details { margin-top: 20px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-rating-panel { padding: 24px 20px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-rating-panel > h3 { font-size: 22px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-rating-grid > div { display: block; padding-block: 18px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-rating-grid dt { margin-bottom: 8px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-input-grid { grid-template-columns: minmax(0, 1fr); gap: 28px; margin-top: 32px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-input-grid dt { font-size: 20px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] > .ip-project-reference { margin-top: 36px; padding-block: 32px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] > .ip-project-reference > .lp-wrap { grid-template-columns: minmax(0, 1fr); gap: 28px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-project-files h3 { font-size: 22px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-project-scope { padding-top: 24px; border-top: 1px solid #52616b; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-selection[data-selection-layout=\"visual\"] .ip-project-scope dt { font-size: 20px; }\n}\n<\/style>\n<div class=\"lp-wrap\"><div class=\"ip-section-heading\"><h2 id=\"load-switch-selection-title\">Cabinet installation and <span>fuse selection<\/span><\/h2><p>Specify the electrical duty and cabinet interfaces for the exact load-switch or switch-fuse arrangement. Review fuse protection and operation as a coordinated configuration.<\/p><\/div><div class=\"ip-selection-workspace\"><div class=\"ip-cabinet-context\"><figure class=\"ip-cabinet-figure\"><img decoding=\"async\" alt=\"FZN25 indoor vacuum load break switch, front angle view\" height=\"480\" loading=\"lazy\" src=\"https:\/\/liqele.com\/wp-content\/plugins\/liq-site-components\/assets\/load-switch-fzn25-card-720.webp\" width=\"720\"\/><figcaption>FZN25 assembly example<\/figcaption><\/figure><div aria-label=\"New switchgear and replacement requirements\" class=\"ip-integration-details\" id=\"load-switch-applications\">\n<details><summary>New switchgear<\/summary><p>Place the selected load-switch or switch-fuse arrangement in the cabinet design using its outline and operating drawing. Coordinate primary terminals, clearances, operating access and any required isolation or earthing interlocks. For a fuse combination, check fuse-holder geometry, access and striker\/tripping interfaces against the coordinated configuration. Show operating supplies, auxiliary contacts and cabinet controls in the secondary schematic.<\/p><\/details>\n<details><summary>Replacement equipment<\/summary><p>Identify the installed switch and any associated fuses from their nameplates and drawings. Compare mounting, terminals, operating direction, supplies, auxiliary contacts and interlocks with the candidate. A shared family designation or cabinet width does not establish interchangeability. Recheck fuse coordination when the switch, fuse type or protected circuit changes, and confirm any required isolation and earthing arrangement.<\/p><\/details>\n<\/div><\/div><div class=\"ip-rating-panel\"><h3>Electrical ratings<\/h3><dl class=\"ip-rating-grid\">\n<div><dt>Voltage and insulation<\/dt><dd>Provide the system and required rated voltage, insulation levels and frequency for the exact arrangement.<\/dd><\/div>\n<div><dt>Load-current interruption<\/dt><dd>State the normal load current and required switching duties, such as active-load or cable-charging interruption where specified. Use the duty-specific ratings for the selected switch.<\/dd><\/div>\n<div><dt>Fault withstand and making<\/dt><dd>Specify the short-time withstand current and duration, peak withstand current and any required short-circuit making duty. These are separate ratings from short-circuit breaking capability.<\/dd><\/div>\n<div><dt>Switch-fuse fault duty<\/dt><dd>State the required short-circuit breaking duty for the complete switch-fuse combination, where specified. Check it against the coordinated arrangement\u2019s documented rating and fuse-selection limits.<\/dd><\/div>\n<\/dl><p class=\"ip-rating-note\">Do not treat load-current, fault withstand or making ratings as a bare-switch short-circuit breaking rating. For a switch-fuse arrangement, use the rating of the coordinated combination.<\/p><\/div><\/div><dl class=\"ip-input-grid\">\n<div><dt>Cabinet interfaces<\/dt><dd>Cabinet layout and mounting dimensions, installation and operating direction, phase spacing, primary terminals, access and clearances; fuse-replacement space where required.<\/dd><\/div>\n<div><dt>Operation and interlocks<\/dt><dd>Required operating method and supplies, auxiliary contacts and indication; any required earthing arrangement and cabinet-door, isolation or earthing interlocks for the selected version.<\/dd><\/div>\n\n<\/dl><\/div>\n\n<aside aria-labelledby=\"load-switch-inquiry-title\" class=\"ip-project-reference\" id=\"load-switch-inquiry\"><div class=\"lp-wrap\"><div class=\"ip-project-files\"><h3 id=\"load-switch-inquiry-title\">Documents for a selection enquiry<\/h3><p>Provide the specification, cabinet layout, mounting drawing and secondary schematic with the full model designation. For a specified switch-fuse combination, include fuse data and the protected circuit or transformer information. Add nameplate and installation photographs for replacement work.<\/p><p class=\"ip-project-actions\"><a class=\"lp-button\" href=\"\/contact\/?family=load&amp;request_type=selection\">Discuss product selection<\/a><\/p><\/div><dl class=\"ip-project-scope\"><div><dt>Fuse and project requirements<\/dt><dd>For a specified combination, provide fuse type, rated current, time-current data, striker characteristics and protected transformer or circuit data. Include service conditions, applicable standards and editions, required drawings and reports, quantity and destination.<\/dd><\/div><\/dl><\/div><\/aside><\/section>\n<section aria-labelledby=\"load-switch-inspection-title\" class=\"lp-section ip-section ip-inspection-section\" id=\"load-switch-inspection\"><div class=\"lp-wrap\">\n<div class=\"ip-section-heading\"><h2 id=\"load-switch-inspection-title\">Load break switch <span>manufacturing<\/span> and inspection<\/h2><div><p>Zhejiang Liqiang Intelligent Equipment Co., Ltd. manufactures switching devices and operating mechanisms in Yueqing, Zhejiang, China.<\/p><p>Production includes mechanism and primary-circuit assembly, adjustment and finished-device inspection. The selected load-switch arrangement determines which operating, insulation, earthing and interlock checks apply.<\/p><\/div><\/div>\n<div class=\"ip-manufacturing-media\"><figure><img decoding=\"async\" alt=\"Load-switch assemblies and components in the Liqiang workshop\" height=\"1280\" loading=\"lazy\" src=\"https:\/\/liqele.com\/wp-content\/plugins\/liq-site-components\/assets\/load-switch-workshop-hero-1706.webp\" width=\"1706\"\/><figcaption>Load-switch assemblies in the Liqiang workshop. Arrangements vary by model.<\/figcaption><\/figure><figure class=\"ip-tester\"><img decoding=\"async\" alt=\"XHR-8(B) switching-device mechanical characteristics tester in the Liqiang workshop\" height=\"748\" loading=\"lazy\" src=\"https:\/\/liqele.com\/wp-content\/plugins\/liq-site-components\/assets\/mechanical-testing-1000.webp\" width=\"1000\"\/><figcaption>Mechanical characteristics testing equipment.<\/figcaption><\/figure><\/div>\n<details class=\"ip-inspection-records\"><summary>Assembly checks and records<\/summary><p>Review mechanical operation, position indication, terminal condition and any fitted earthing or interlock function against the selected model and drawings. For a switch-fuse combination, check the specified fuse and striker operation together with the switch. Records should identify the supplied designation, check method and result. A type-test report applies to the named sample, rated combination and test items; check these against the selected switch or combination.<\/p><\/details>\n<p class=\"ip-manufacturing-link\"><a href=\"\/about\/manufacturing-quality\/#inspection\">Explore Liqiang manufacturing and inspection<\/a><\/p>\n<\/div><\/section>\n<section aria-labelledby=\"load-switch-manuals-title\" class=\"lp-section ip-section ip-documents-section\" id=\"load-switch-manuals\"><div class=\"lp-wrap\">\n<div class=\"ip-section-heading ip-documents-heading\"><h2 id=\"load-switch-manuals-title\">Load break switch <span>manuals<\/span><\/h2><p>Use the manual for the exact load-switch or switch-fuse designation. Confirm the installation arrangement, fuse specification and applicable revision before using the drawings or operating instructions.<\/p><\/div>\n<div class=\"ip-document-workspace\"><dl class=\"ip-document-list\">\n<div class=\"ip-document-row\" id=\"load-switch-doc-fkn12\"><dt>FKN12<\/dt><dd><div><span class=\"ip-manual-scope\">Air-blast load-switch and switch-fuse arrangements, operation and outline drawings<\/span><span class=\"ip-document-meta\">PDF \u00b7 6.1 MB \u00b7 confirm FKN or FKRN designation<\/span><\/div><a class=\"ip-file-link\" href=\"https:\/\/liqele.com\/wp-content\/uploads\/2026\/10\/fkn12-12-air-blast-load-switch-manual.pdf\">Open FKN12 manual<\/a><\/dd><\/div>\n<div class=\"ip-document-row\" id=\"load-switch-doc-fzn25\"><dt>FZN25<\/dt><dd><div><span class=\"ip-manual-scope\">Vacuum load-switch and switch-fuse arrangements, installation and operation<\/span><span class=\"ip-document-meta\">PDF \u00b7 5.1 MB \u00b7 confirm FZN or FZRN designation<\/span><\/div><a class=\"ip-file-link\" href=\"https:\/\/liqele.com\/wp-content\/uploads\/2026\/10\/fzn25-manual.pdf\">Open FZN25 manual<\/a><\/dd><\/div>\n<div class=\"ip-document-row\" id=\"load-switch-doc-fzn64\"><dt>FZN64<\/dt><dd><div><span class=\"ip-manual-scope\">FZN64 \/ FZRN64 installation, operation and cabinet arrangement<\/span><span class=\"ip-document-meta\">PDF \u00b7 1.5 MB \u00b7 500 mm cabinet-width edition<\/span><\/div><a class=\"ip-file-link\" href=\"https:\/\/liqele.com\/wp-content\/uploads\/2026\/10\/fzn64-manual.pdf\">Open FZN64 manual<\/a><\/dd><\/div>\n<div class=\"ip-document-row\" id=\"load-switch-doc-vzf\"><dt>VZF<\/dt><dd><div><span class=\"ip-manual-scope\">Model-matched embedded-pole, middle-mounted arrangement and operating information<\/span><span class=\"ip-document-meta\">PDF \u00b7 10.8 MB \u00b7 confirm designation and revision<\/span><\/div><a class=\"ip-file-link\" href=\"https:\/\/liqele.com\/wp-content\/uploads\/2026\/10\/vzf-r12-product-manual.pdf\">Open VZF manual<\/a><\/dd><\/div>\n<div class=\"ip-document-row\" id=\"load-switch-doc-catalogue\"><dt>Product catalogue<\/dt><dd><div><span class=\"ip-manual-scope\">General Liqiang switching-equipment range; confirm exact model requirements separately<\/span><span class=\"ip-document-meta\">PDF \u00b7 6.5 MB<\/span><\/div><a class=\"ip-file-link\" href=\"https:\/\/liqele.com\/wp-content\/uploads\/2026\/10\/liqiang-product-catalogue.pdf\">Open product catalogue<\/a><\/dd><\/div>\n<\/dl><\/div>\n\n<div aria-labelledby=\"load-switch-faq-title\" class=\"ip-document-questions\" data-faq-layout=\"sheet\" id=\"load-switch-faq\"><style data-family-faq-layout=\"\">\/* Indoor document FAQ: shared heading, readable rows, native disclosure states. *\/\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] {\n  display: block;\n  margin-block-start: 48px;\n  padding: 36px 40px 12px;\n  border: 1px solid var(--ip-line, #D9DFE2);\n  background: var(--theme-palette-color-7, #fff);\n  scroll-margin-block-start: calc(var(--header-height, 96px) + 24px);\n}\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] .ip-faq-header {\n  display: grid;\n  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);\n  gap: 40px;\n  align-items: center;\n  margin-block-end: 28px;\n}\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] h3 {\n  max-inline-size: none;\n  margin: 0;\n  color: var(--ip-ink, #000);\n  font-size: 28px;\n  font-weight: 700;\n  line-height: 1.3;\n  text-wrap: balance;\n}\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] h3 span { color: var(--ip-red, #B92921); }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] .ip-guide-link {\n  margin: 0 !important;\n  max-inline-size: 48ch;\n  font-size: 14px !important;\n  line-height: 1.7;\n}\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] .ip-guide-link a {\n  color: var(--ip-red, #B92921);\n  text-decoration: underline;\n  text-underline-offset: 3px;\n}\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] .ip-faq-list { min-inline-size: 0; border: 0; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] details {\n  margin: 0;\n  border: 0;\n  border-block-start: 1px solid var(--ip-line, #D9DFE2);\n}\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] summary {\n  display: flex;\n  align-items: center;\n  justify-content: space-between;\n  gap: 24px;\n  min-block-size: 80px;\n  padding: 22px 24px;\n  color: var(--ip-ink, #000);\n  font-size: 17px;\n  font-weight: 600;\n  line-height: 1.5;\n  list-style: none;\n  cursor: pointer;\n}\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] summary::after {\n  content: \"\";\n  flex: 0 0 36px;\n  inline-size: 36px;\n  block-size: 36px;\n  background-color: var(--theme-palette-color-6, #F3F5F6);\n  background-image: linear-gradient(var(--ip-red, #B92921), var(--ip-red, #B92921)), linear-gradient(var(--ip-red, #B92921), var(--ip-red, #B92921));\n  background-size: 14px 1.5px, 1.5px 14px;\n  background-position: center;\n  background-repeat: no-repeat;\n}\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] summary::marker { content: \"\"; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] summary::-webkit-details-marker { display: none; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] summary:hover { color: var(--ip-red, #B92921); }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] details[open] { background: var(--theme-palette-color-6, #F3F5F6); }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] details[open] summary { color: var(--ip-ink, #000); }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] details[open] summary::after {\n  background-color: var(--ip-red, #B92921);\n  background-image: linear-gradient(#fff, #fff);\n  background-size: 14px 1.5px;\n}\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] details p {\n  max-inline-size: 78ch;\n  margin: 0;\n  padding-block: 0 24px;\n  padding-inline: 24px 80px;\n  color: var(--ip-ink, #000);\n  font-size: 15px;\n  line-height: 1.8;\n}\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] details p a { color: var(--ip-red, #B92921); text-decoration: underline; text-underline-offset: 3px; }\n.liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] :is(summary, a):focus-visible { outline: 2px solid var(--ip-red, #B92921); outline-offset: -2px; }\n@media (max-width: 800px) {\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] .ip-faq-header { grid-template-columns: minmax(0, 1fr); gap: 16px; }\n}\n@media (max-width: 700px) {\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] { margin-block-start: 36px; padding: 24px 20px 4px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] h3 { font-size: 24px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] .ip-faq-header { margin-block-end: 24px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] summary { min-block-size: 76px; padding: 20px 12px; gap: 16px; font-size: 16px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] summary::after { flex-basis: 32px; inline-size: 32px; block-size: 32px; }\n  .liq-page[data-liq-page=\"load-break-switches\"] #load-switch-faq[data-faq-layout=\"sheet\"] details p { padding-block: 0 24px; padding-inline: 12px; font-size: 15px; }\n}\n<\/style><div class=\"ip-faq-header\"><h3 id=\"load-switch-faq-title\">Technical document <span>questions<\/span><\/h3><p class=\"ip-guide-link\">For help choosing a device, use the <a href=\"\/select-medium-voltage-switching-devices\/\">switching-device selection guide<\/a>.<\/p><\/div><div class=\"ip-faq-list\">\n<details><summary>Does a load break switch provide circuit-breaker fault protection?<\/summary><p>A load-switch rating covers specified load-switching duties. It does not, by itself, establish short-circuit breaking capability. Where a switch-fuse combination is required, use the rating and fuse selection for that coordinated configuration.<\/p><\/details>\n<details><summary>Which drawings are needed for cabinet integration?<\/summary><p>Use the exact model&#8217;s outline and mounting drawings with the cabinet layout. Review operating direction, terminal positions, clearances, earthing and interlocks together. Include the secondary schematic and operating supply; for a switch-fuse combination, also confirm the specified fuse arrangement and coordination.<\/p><\/details>\n<details><summary>How do I select a switch-fuse combination for a transformer?<\/summary><p>Provide transformer power, system voltage, prospective fault current and the required protection arrangement. Select the switch and fuse together, checking transformer inrush, fuse characteristics, striker compatibility and cabinet fit. Review the <a href=\"#load-switch-selection\">fuse-selection and installation requirements<\/a> for the complete combination.<\/p><\/details>\n<\/div><\/div>\n<\/div><\/section>\n<nav aria-label=\"Switching equipment families\" class=\"ic-siblings\"><div class=\"lp-wrap\"><p>Switching equipment families<\/p><a href=\"\/products\/indoor-vacuum-circuit-breakers\/\">Indoor breakers<\/a><a href=\"\/products\/outdoor-vacuum-circuit-breakers\/\">Outdoor breakers<\/a><a aria-current=\"page\" href=\"\/products\/load-break-switches\/\">Load break switches<\/a><a href=\"\/products\/disconnectors-earthing-switches\/\">Isolation &amp; earthing<\/a><\/div><\/nav>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Indoor load switching Load breakswitches. Liqiang manufactures indoor load break switches for medium-voltage switchgear. Compare air-blast and vacuum load-switch arrangements for indoor cabinet integration. Define the switching duty and any fuse-combination requirement, then coordinate the mounting, operation and interlocks. Compare load-switch modelsView document options Load-switch assemblies in the Liqiang workshop. Arrangements vary by model. ModelsConfigurationRequirementsManufacturingDocuments [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":534,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"liq_structure_placeholder":false,"liq_content_page":true,"rank_math_title":"Load Break Switch Manufacturer | Liqiang","rank_math_description":"Liqiang manufactures indoor load break switches. Compare FKN12, FZN25, FZN64 and VZF series, switching duties, switch-fuse arrangements and cabinet interfaces.","rank_math_facebook_image":"https:\/\/liqele.com\/wp-content\/plugins\/liq-site-components\/assets\/load-break-switch.webp","rank_math_twitter_image":"https:\/\/liqele.com\/wp-content\/plugins\/liq-site-components\/assets\/load-break-switch.webp","footnotes":""},"class_list":["post-549","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/liqele.com\/es\/wp-json\/wp\/v2\/pages\/549","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/liqele.com\/es\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/liqele.com\/es\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/liqele.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/liqele.com\/es\/wp-json\/wp\/v2\/comments?post=549"}],"version-history":[{"count":8,"href":"https:\/\/liqele.com\/es\/wp-json\/wp\/v2\/pages\/549\/revisions"}],"predecessor-version":[{"id":1859,"href":"https:\/\/liqele.com\/es\/wp-json\/wp\/v2\/pages\/549\/revisions\/1859"}],"up":[{"embeddable":true,"href":"https:\/\/liqele.com\/es\/wp-json\/wp\/v2\/pages\/534"}],"wp:attachment":[{"href":"https:\/\/liqele.com\/es\/wp-json\/wp\/v2\/media?parent=549"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}