ANL fuses are high-current DC blade fuses, the standard choice for protecting the main circuit between the battery and the inverter in campervan, marine and off-grid installations. They cover ranges from 35 to 750 A and are the type you\u2019ll see in almost any Victron diagram.<\/p>\n
Its natural place is on the cable with the largest cross-section in the installation: the one running from the battery\u2019s positive terminal to the inverter or the main distribution board. Very high currents flow through this cable \u2014 a 2,000 W, 12 V inverter can draw more than 170 A \u2014 and an unprotected short circuit will result in a fire. The fuse protects the cable, not the appliance. It is rated for a current higher than the maximum operating current but lower than the cable\u2019s current-carrying capacity. All three are high-current DC fuses and differ in terms of their rating range and format. The MIDI<\/a> range from 30 to 200 A in a compact format; the MEGA<\/a> They reach 500 A and are commonly used in distribution systems; ANLs cover the widest range and are the most widely used in mobile photovoltaic installations. If you tell us which charger and which battery you\u2019re going to use, we\u2019ll tell you which fuse and what cable gauge you need: technical advice<\/a> free.<\/p>","link":"https:\/\/fvcomponentes.com\/en\/categoria-producto\/material-electrico\/fusibles\/fusibles-anl\/","name":"ANL fuses","slug":"anl-fuses","taxonomy":"product_cat","parent":862,"meta":[],"menu_order":92,"_links":{"self":[{"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/product_cat\/993","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=993"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nThe ANL fuse is fitted in its fuse holder<\/a> as close as possible to the battery terminal. This proximity is key: the section of cable between the battery and the fuse is the only part that is unprotected, so it must be as short as possible.<\/p>\nHow do you choose the amperage?<\/h2>\n
\nThe procedure is as follows: calculate the maximum current that will flow \u2014 power divided by voltage, allowing for the peak \u2014, then select a cable cross-section capable of withstanding it using the Cross-section table by power rating<\/a>, and fit a fuse between that maximum current and the cable\u2019s current rating.
\nExample: a 12V, 2,000 W inverter<\/a> With an efficiency of 90 %, it requires around 185 A continuous current. 50 mm\u00b2 cable and a 250 A ANL fuse.<\/p>\nANL, MEGA or MIDI<\/h2>\n
\nThe important thing, regardless of the type, is that they are approved fuses for direct current: a fuse designed for alternating current does not effectively cut off a direct current arc and may fail to interrupt the fault.<\/p>\n