{"id":4264,"date":"2025-10-21T17:04:37","date_gmt":"2025-10-21T17:04:37","guid":{"rendered":"https:\/\/1clickrepair.in\/ESS\/?post_type=product&#038;p=4264"},"modified":"2026-10-25T14:15:15","modified_gmt":"2026-10-25T14:15:15","slug":"r3-55b-panel-mount-fuse-holder-6x30mm-6x32mm","status":"publish","type":"product","link":"https:\/\/essfuse.com\/it\/product\/r3-55b-panel-mount-fuse-holder-6x30mm-6x32mm\/","title":{"rendered":"6x30mm \/ 6x32mm Panel Mount Fuse Holder | 20A 250V Industrial Fuse Base"},"content":{"rendered":"<p><strong><img loading=\"lazy\" decoding=\"async\" class=\"lazy entered loaded aligncenter\" src=\"https:\/\/v7-upload.digoodcms.com\/website_193\/2025-07-17\/55.png?imageMogr2\/format\/webp\" alt=\"R3 (55B) Panel Fuse Holder\" width=\"714\" height=\"800\" \/><\/strong><\/p>\n<p><strong>Panel mount fuse holder<\/strong> compatible with 6x30mm and 6x32mm cartridge fuses is a heavy\u2011duty panel\u2011installed over\u2011current\u2011protection component for medium\u2011power low\u2011voltage systems. This fuse holder uses high\u2011strength PBT insulating housing together with 0.8mm thick phosphor\u2011bronze conductive terminals, offering robust insulation, high current\u2011carrying performance and stable contact for both AC and DC circuits. The threaded\u2011nut panel\u2011mount design supports quick front\u2011side fuse replacement without opening the equipment enclosure, widely adopted in industrial control cabinets, switching power supplies, medium\u2011power household appliances and instrumentation front panels.<\/p>\n<h2>Core Product Features<\/h2>\n<ul>\n<li>Compatible with standard 6\u00d730mm and 6\u00d732mm glass \/ ceramic cartridge fuses, covers mainstream medium\u2011power low\u2011voltage protection requirements<\/li>\n<li>Rated 20A at 250V \/ 125V AC\/DC; 50A breaking capacity for effective fault\u2011current interruption<\/li>\n<li>PBT (polybutylene terephthalate) housing, UL94 V0 flame\u2011retardant grade; excellent heat\u2011resistance, arc\u2011suppression and dielectric performance<\/li>\n<li>0.8mm thick phosphor bronze terminals, reinforced heavy\u2011duty construction, high spring tension, contact resistance below 5\u202fm\u03a9<\/li>\n<li>3000V AC power\u2011frequency withstand voltage; insulation resistance &gt;100\u202fM\u03a9 for high\u2011safety operation<\/li>\n<li>Threaded\u2011nut panel\u2011mount structure, standard panel cut\u2011out dimension; easy front\u2011panel fuse servicing<\/li>\n<li>RoHS\u2011compliant, satisfies global electronics environmental\u2011protection and safety standards<\/li>\n<\/ul>\n<p>Compared with light\u2011duty small\u2011size fuse holders, this unit uses thicker 0.8\u202fmm phosphor bronze terminals to support 20A continuous load, making it suitable for medium\u2011power industrial and appliance projects. The PBT housing delivers superior thermal stability for long\u2011term cyclic\u2011load operating conditions.<\/p>\n<h2>Full Technical Specifications<\/h2>\n<table style=\"border-collapse: collapse; width: 100%; border: 1px solid #000;\">\n<tbody>\n<tr>\n<th style=\"border: 1px solid #000; padding: 8px 12px; text-align: left; background: #f5f5f5;\">Specification Item<\/th>\n<th style=\"border: 1px solid #000; padding: 8px 12px; text-align: left; background: #f5f5f5;\">Parameter Value<\/th>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #000; padding: 8px 12px;\">Model<\/td>\n<td style=\"border: 1px solid #000; padding: 8px 12px;\">R3\u201155B<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #000; padding: 8px 12px;\">Compatible Fuse<\/td>\n<td style=\"border: 1px solid #000; padding: 8px 12px;\">6 \u00d7 30\u202fmm \/ 6 \u00d7 32\u202fmm glass &amp; ceramic cartridge fuse<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #000; padding: 8px 12px;\">Rated Current<\/td>\n<td style=\"border: 1px solid #000; padding: 8px 12px;\">20A<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #000; padding: 8px 12px;\">Rated Voltage<\/td>\n<td style=\"border: 1px solid #000; padding: 8px 12px;\">250V \/ 125V AC \/ DC<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #000; padding: 8px 12px;\">Breaking Capacity<\/td>\n<td style=\"border: 1px solid #000; padding: 8px 12px;\">50A<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #000; padding: 8px 12px;\">Power Frequency Withstand Voltage<\/td>\n<td style=\"border: 1px solid #000; padding: 8px 12px;\">3000V AC<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #000; padding: 8px 12px;\">Housing Material<\/td>\n<td style=\"border: 1px solid #000; padding: 8px 12px;\">PBT, UL94 V0 flame\u2011retardant<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #000; padding: 8px 12px;\">Terminal Material<\/td>\n<td style=\"border: 1px solid #000; padding: 8px 12px;\">0.8\u202fmm thick phosphor bronze<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #000; padding: 8px 12px;\">Contact Resistance<\/td>\n<td style=\"border: 1px solid #000; padding: 8px 12px;\">\uff1c 5\u202fm\u03a9<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #000; padding: 8px 12px;\">Insulation Resistance<\/td>\n<td style=\"border: 1px solid #000; padding: 8px 12px;\">\uff1e 100\u202fM\u03a9<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #000; padding: 8px 12px;\">Mounting Method<\/td>\n<td style=\"border: 1px solid #000; padding: 8px 12px;\">Panel mount, threaded nut fixing<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Selection &amp; Application Guidance<\/h2>\n<p>When selecting this 6&#215;30\u202f\/\u202f6&#215;32\u202fmm panel mount fuse holder, confirm fuse dimension, system voltage type (AC\/DC), and continuous operating current first. The unit supports both 6\u00d730\u202fmm and 6\u00d732\u202fmm standard cartridge fuses. Choose matching\u2011rating fuses and keep a 1.25\u20111.5\u00d7 safety margin against continuous\u2011load overheating. For projects requiring front\u2011panel fuse change\u2011out, this threaded\u2011nut panel\u2011mount variant reduces maintenance work without opening equipment housing. Prefer UL94\u202fV0 PBT\u2011housing parts for high\u2011temperature or arc\u2011risk environments. Verify panel cut\u2011out dimension matches drawing specifications for secure mounting and stable electrical contact.<\/p>\n<h2>Typical Application Scenarios<\/h2>\n<ul>\n<li>Industrial control cabinets and medium\u2011power automation\u2011equipment circuits<\/li>\n<li>Switching power supplies, power adapters and power\u2011distribution units<\/li>\n<li>Test instruments and laboratory bench power\u2011supply circuits<\/li>\n<li>Medium\u2011power household appliances and commercial electrical equipment<\/li>\n<li>Communication equipment and network\u2011device power\u2011input protection<\/li>\n<li>LED power drivers and low\u2011voltage medium\u2011power modules<\/li>\n<li>Medical auxiliary equipment and low\u2011voltage control\u2011system circuits<\/li>\n<\/ul>\n<h2>Installation &amp; Maintenance Instructions<\/h2>\n<p>1. Select correct\u2011rating 6&#215;30\u202fmm \/ 6&#215;32\u202fmm cartridge fuse per your circuit\u2011protection requirements.<\/p>\n<p>2. Drill standard mounting hole on equipment panel; insert fuse holder from front face, fasten rear fixing nut to achieve firm installation.<\/p>\n<p>3. Secure wiring to rear terminals properly and add necessary insulation protection to prevent short\u2011circuit hazards.<\/p>\n<p>4. Insert cartridge fuse fully and tighten cap to guarantee reliable contact and insulation performance.<\/p>\n<p>5. Do not operate beyond published rated voltage\u2011current limits to avoid insulation breakdown and safety risks.<\/p>\n<p>6. Cut off full power supply before fuse replacement to prevent electric shock and accidental short\u2011circuit damage.<\/p>\n<p>7. Periodically inspect terminals and fuses for looseness, oxidation or thermal overheating signs; replace components in time when anomalies are found.<\/p>\n<p><a href=\"https:\/\/essfuse.com\/wp-content\/uploads\/2025\/10\/R3-55B-Panel-fuse-holder.pdf\">R3-55B-Panel-fuse-holder<\/a><\/p>\n<h2>Frequently Asked Questions<\/h2>\n<p><strong>Q1: Which fuse sizes does this panel mount fuse holder accept?<\/strong><\/p>\n<p>A1: It accepts standard 6\u00d730\u202fmm and 6\u00d732\u202fmm glass and ceramic cartridge fuses, widely\u2011used specifications for medium\u2011power low\u2011voltage circuit\u2011protection applications.<\/p>\n<p><strong>Q2: What are its rated current and voltage ratings?<\/strong><\/p>\n<p>A2: Rated current is 20A; rated voltage 250V \/125V for both AC and DC, suitable for most medium\u2011power electrical\u2011equipment\u2011protection scenarios.<\/p>\n<p><strong>Q3: What material is the housing made of?<\/strong><\/p>\n<p>A3: Housing uses PBT engineering plastic with UL94\u202fV0 flame\u2011retardant grade, featuring good heat\u2011resistance, arc\u2011suppression and insulation\u2011performance.<\/p>\n<p><strong>Q4: What are the terminals specifications?<\/strong><\/p>\n<p>A4: Terminals are constructed from 0.8\u202fmm\u2011thick phosphor bronze for heavy\u2011duty 20A continuous\u2011current capacity; contact resistance is less than 5\u202fm\u03a9.<\/p>\n<p><strong>Q5: What about insulation\u2011related electrical\u2011performance?<\/strong><\/p>\n<p>A5: 3000V AC power\u2011frequency withstand voltage; insulation resistance &gt;100\u202fM\u03a9 to ensure safe low\u2011voltage\u2011circuit\u2011operation.<\/p>\n<p><strong>Q6: What mounting style does it adopt?<\/strong><\/p>\n<p>A6: Threaded\u2011nut panel\u2011mount design. Install from equipment front\u2011panel and fasten nut from rear side for stable installation and convenient fuse\u2011replacement maintenance.<\/p>\n<p><strong>Q7: What are main application\u2011fields?<\/strong><\/p>\n<p>A7: Applied for industrial\u2011control cabinets, switching power\u2011supplies, test instruments, household appliances, communication\u2011equipment and various medium\u2011power AC\u2011DC over\u2011current\u2011protection circuits.<\/p>","protected":false},"excerpt":{"rendered":"<p>Industrial\u2011grade panel mount fuse holder compatible with 6\u00d730mm and 6\u00d732mm cartridge fuses, PBT UL94 V0 flame\u2011retardant housing and heavy\u2011duty 0.8mm phosphor bronze terminals, rated 20A 250V\/125V AC\/DC, 3000V AC power\u2011frequency withstand voltage, built for industrial cabinets, power supplies and medium\u2011power equipment overcurrent protection.<\/p>","protected":false},"featured_media":4046,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[155],"product_tag":[],"class_list":["post-4264","product","type-product","status-publish","has-post-thumbnail","product_cat-panel-fuse-holder","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/essfuse.com\/it\/wp-json\/wp\/v2\/product\/4264","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/essfuse.com\/it\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/essfuse.com\/it\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/essfuse.com\/it\/wp-json\/wp\/v2\/comments?post=4264"}],"version-history":[{"count":2,"href":"https:\/\/essfuse.com\/it\/wp-json\/wp\/v2\/product\/4264\/revisions"}],"predecessor-version":[{"id":15297,"href":"https:\/\/essfuse.com\/it\/wp-json\/wp\/v2\/product\/4264\/revisions\/15297"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/essfuse.com\/it\/wp-json\/wp\/v2\/media\/4046"}],"wp:attachment":[{"href":"https:\/\/essfuse.com\/it\/wp-json\/wp\/v2\/media?parent=4264"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/essfuse.com\/it\/wp-json\/wp\/v2\/product_brand?post=4264"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/essfuse.com\/it\/wp-json\/wp\/v2\/product_cat?post=4264"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/essfuse.com\/it\/wp-json\/wp\/v2\/product_tag?post=4264"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}