{"id":994,"count":17,"description":"<p>MIDI fuses are blade-type fuses for direct current in the 30 to 200 A range. They are the intermediate size between small vehicle fuses and high-current ANL fuses, and are the most commonly used type for protecting individual circuits in an installation: the solar regulator, the booster, the charger or the service distribution panel.<\/p>\n<h2>Where does a MIDI fuse go?<\/h2>\n<p>Every cable coming out of the battery or the <a href=\"\/en\/product-category\/electrical-equipment\/busbar\/\">busbar<\/a> A circuit leading to a piece of equipment requires its own protection, rated for that specific cable. That\u2019s where the MIDI comes in: for circuits ranging from 30 to 200 A, which make up the majority in a motorhome or boat installation.<br \/>\nThe main cable to the inverter, which may draw 200 A or more, is normally protected by a <a href=\"\/en\/product-category\/electrical-equipment\/fuses\/anl-fuses\/\">ANL fuse<\/a> o <a href=\"\/en\/product-category\/electrical-equipment\/fuses\/mega-fuses\/\">MEGA<\/a>.<\/p>\n<h2>How do you choose the amperage?<\/h2>\n<p>The rule is that the fuse protects the cable, not the appliance. It should be selected to be higher than the appliance\u2019s maximum operating current and lower than the current rating of the cable you have installed.<br \/>\nCommon examples: a <a href=\"\/en\/product-category\/solar-charging-regulators\/mppt-regulators\/\">MPPT controller<\/a> A 30 A circuit is protected by a 40\u201350 A MIDI; a <a href=\"\/en\/product-category\/battery-chargers\/converters\/\">DC-DC booster<\/a> 50 A, with one rated at 60\u201380 A.<br \/>\nIf the fuse blows as it should, it isn\u2019t because it\u2019s too small: it\u2019s because something is drawing more current than anticipated. Increasing the amperage without investigating the cause is tantamount to trading one safety measure for a fire hazard.<\/p>\n<h2>DC fuse, not AC<\/h2>\n<p>A fuse designed for alternating current utilises the waveform\u2019s natural zero-crossing to extinguish the arc. In direct current, there is no zero-crossing, so the arc may persist and the fuse may fail to interrupt the fault. All the MIDI units we supply are approved for direct current.<br \/>\nYou\u2019ll also need their <a href=\"\/en\/product-category\/electrical-equipment\/fuse-holder\/\">fuse holder<\/a> the correct one, and a cable of the appropriate cross-section \u2014 check this in the <a href=\"\/en\/how-to-calculate-the-cross-section-of-a-cable\/\">Cross-section table by power rating<\/a>.<br \/>\nTell us which appliances you\u2019re going to protect and which cable you\u2019ll be using, and we\u2019ll tell you the exact amperage for each fuse: <a href=\"\/en\/victron-support\/\">free advice<\/a>.<\/p>","link":"https:\/\/fvcomponentes.com\/en\/categoria-producto\/material-electrico\/fusibles\/fusibles-midi\/","name":"Midi Fuses","slug":"midi-fuses","taxonomy":"product_cat","parent":862,"meta":[],"menu_order":95,"_links":{"self":[{"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/product_cat\/994","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/product_cat"}],"about":[{"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/taxonomies\/product_cat"}],"up":[{"embeddable":true,"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/product_cat\/862"}],"wp:post_type":[{"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/product?product_cat=994"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}