{"id":1019,"count":2,"description":"ProJoy Electric manufactures safety devices for photovoltaic installations: rapid shutdown at module level, DC disconnect switches and specific DC-side protection devices. These devices ensure that the roof is free from dangerous voltage in the event of an emergency.\r\n<h2>What is fast shutdown and why does it matter?<\/h2>\r\nA photovoltaic system generates voltage as soon as there is light, even if the inverter is switched off. A string of panels can have 600 volts DC on the roof, and that voltage remains as long as the sun is shining.\r\nThe rapid shutdown device cuts off the voltage to each module or string, bringing the roof down to a safe voltage within seconds. This is what enables firefighters to tackle a fire, and in several countries it is already mandatory for certain installations.\r\n<h2>When you need it<\/h2>\r\nOn residential roofs where you want to be able to cut off the entire system from ground level, in industrial buildings, and in any installation where access to the roof is difficult. Also when required by your insurance company.\nEven if it isn\u2019t compulsory in your case, it is an inexpensive component given the risk it covers.\r\n<h2>DC disconnectors<\/h2>\r\nProJoy also manufactures DC disconnectors for the DC switchboard, rated for the voltages and currents of a photovoltaic string. Remember that AC switchgear is not suitable for DC: without the waveform passing through zero, the arc does not extinguish in the same way.\nComplete it with <a href=\"\/en\/product-category\/electrical-equipment\/surge-protection\/\">surge protection<\/a> and the <a href=\"\/en\/product-category\/electrical-equipment\/fuses\/\">fuses<\/a> on the panel side.\nIf you\u2019re unsure about the protection requirements for your installation, just tell us the configuration and we\u2019ll sort it out for you: <a href=\"\/en\/victron-support\/\">free advice<\/a>. View all the <a href=\"\/en\/product-category\/electrical-equipment\/\">electrical equipment<\/a>.","link":"https:\/\/fvcomponentes.com\/en\/brand\/projoy\/","name":"ProJoy","slug":"projoy","taxonomy":"pwb-brand","parent":0,"meta":[],"_links":{"self":[{"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/pwb-brand\/1019","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/pwb-brand"}],"about":[{"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/taxonomies\/pwb-brand"}],"wp:post_type":[{"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/product?pwb-brand=1019"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}