{"title":"PTC-sikring","description":"\u003cp\u003e\u003cstrong data-end=\"62\" data-start=\"28\"\u003eSelf-resetting PTC fuse\u003c\/strong\u003e (also called \u003cem data-end=\"91\" data-start=\"74\"\u003eresettable fuse\u003c\/em\u003e or \u003cem data-end=\"108\" data-start=\"98\"\u003epolyfuse\u003c\/em\u003e) from the manufacturer \u003cstrong data-end=\"136\" data-start=\"126\"\u003eBourns\u003c\/strong\u003e \u003c\/p\u003e\n\u003cp data-end=\"533\" data-start=\"230\"\u003eIt is made of a \u003cstrong data-end=\"404\" data-start=\"342\"\u003epolymeric material with a positive temperature coefficient (PTC)\u003c\/strong\u003e. This means that its resistance increases sharply when it gets too hot due to excessive current. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-end=\"573\" data-start=\"535\"\u003e🛠️ How it works in practice\u003c\/h3\u003e\n\u003cp data-end=\"756\" data-start=\"577\"\u003e\u003cstrong data-end=\"594\" data-start=\"577\"\u003eNormal operation:\u003c\/strong\u003e\u003cbr data-end=\"597\" data-start=\"594\"\u003e– At normal current consumption (up to approx. xx \u003cstrong data-end=\"648\" data-start=\"639\"\u003eA\u003c\/strong\u003e), the fuse has low resistance and allows current to flow freely through the circuit. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"1119\" data-start=\"761\"\u003e\u003cstrong data-end=\"790\" data-start=\"761\"\u003eOvercurrent \/ short circuit:\u003c\/strong\u003e\u003cbr data-end=\"793\" data-start=\"790\"\u003e– When the current exceeds (trip current), the PTC material starts to \u003cstrong data-end=\"893\" data-start=\"880\"\u003eheat up\u003c\/strong\u003e. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003cbr data-end=\"935\" data-start=\"932\"\u003e– When it gets hot enough, the resistance \u003cstrong data-end=\"991\" data-start=\"980\"\u003eincreases sharply\u003c\/strong\u003e (from a fraction of an ohm to several ohms).\u003cbr data-end=\"1036\" data-start=\"1033\"\u003e– This dramatically reduces the current and \"protects\" the rest of the circuit from damage.\u003c\/p\u003e\n\u003cp data-end=\"1369\" data-start=\"1124\"\u003e\u003cstrong data-end=\"1145\" data-start=\"1124\"\u003eAutomatic reset:\u003c\/strong\u003e\u003cbr data-end=\"1148\" data-start=\"1145\"\u003e– When the fault\/overload is removed and the component \u003cstrong data-end=\"1218\" data-start=\"1204\"\u003ecools down\u003c\/strong\u003e, the resistance drops back to a low value and the fuse \u003cstrong data-end=\"1308\" data-start=\"1273\"\u003ereturns to normal condition\u003c\/strong\u003e without needing to be replaced.\u003c\/p\u003e","products":[{"product_id":"ptc-sikring","title":"MF-R040 Sikring radiell 0.4A \/ 0.8A 770mOhm","description":"","brand":"ASWO","offers":[{"title":"Default Title","offer_id":48093376020632,"sku":"1418-03","price":49.0,"currency_code":"NOK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0749\/9703\/9256\/files\/RA1418_3.jpg?v=1769888946"},{"product_id":"mf-r050-sikring-radial-0-5-1a","title":"MF-R050 Sikring radiell 0,5 \/ 1A","description":"","brand":"ASWO","offers":[{"title":"Default Title","offer_id":48093377036440,"sku":"1420-03","price":49.0,"currency_code":"NOK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0749\/9703\/9256\/files\/RA1418_3.jpg?v=1769888946"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0749\/9703\/9256\/collections\/RA1418_3.jpg?v=1769889074","url":"https:\/\/lydbutikken.no\/nb\/collections\/sikring-ptc.oembed","provider":"Lydshop.no (Skutle Elektronikk)","version":"1.0","type":"link"}