{"product_id":"mersen-a110ud73li900-l300689-semiconductor-fuse","title":"Mersen A110UD73LI900 \/ L300689 High-Speed Semiconductor Fuse, 900A, 1100V UL","description":"\u003cp\u003eThe \u003cstrong\u003eMersen A110UD73LI900\u003c\/strong\u003e, also identified by legacy description \u003cstrong\u003eA110URD73LI0900\u003c\/strong\u003e and manufacturer item number \u003cstrong\u003eL300689\u003c\/strong\u003e, is a Protistor Size 73 aR ultra-fast-acting semiconductor protection fuse rated at 900A. It features a square-body design with long slotted blade terminals and a striker indicator. The fuse is rated at 1000V AC according to IEC and 1100V AC according to UL, with an AC breaking capacity of 167kA. Designed for high-speed semiconductor protection, it provides current-limiting performance for power conversion equipment.\u003c\/p\u003e\n\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 13px; margin-top: 20px; font-family: sans-serif;\"\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eMersen (Ferraz Shawmut)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; color: #333;\"\u003eCatalogue No\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555;\"\u003eA110UD73LI900\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; color: #333;\"\u003eItem number\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555;\"\u003eL300689\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; color: #333;\"\u003eLegacy Description\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555;\"\u003eA110URD73LI0900\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; color: #333;\"\u003eProduct Series\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555;\"\u003eProtistor Size 73 aR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; color: #333;\"\u003eFuse Type\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555;\"\u003eSquare-Body High-Speed Semiconductor Fuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; color: #333;\"\u003eOperating Characteristic\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555;\"\u003eaR, Ultra-Fast Acting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; color: #333;\"\u003eRated Current\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555;\"\u003e900 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; color: #333;\"\u003eRated Voltage AC (IEC)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555;\"\u003e1000 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; color: #333;\"\u003eRated Voltage AC (UL)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555;\"\u003e1100 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; color: #333;\"\u003eRated Breaking Capacity AC\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555;\"\u003e167 kA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; color: #333;\"\u003ePre-Arcing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555;\"\u003e250 kA²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; color: #333;\"\u003eClearing I²t at Rated Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555;\"\u003e1440 kA²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; color: #333;\"\u003ePower Dissipation at Rated Current\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555;\"\u003e170 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; color: #333;\"\u003eFuse Size\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555;\"\u003e73\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; color: #333;\"\u003eTerminal Configuration\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555;\"\u003eType LI, Long Slotted Blades\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; color: #333;\"\u003eIndication System\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555;\"\u003eStriker; Supports Optional Field-Mountable Microswitch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; color: #333;\"\u003eProduct Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555;\"\u003e1.25 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; color: #333;\"\u003eApplicable Standard\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555;\"\u003eIEC 60269-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; color: #333;\"\u003eEAN\/UPC Code\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555;\"\u003e3605340576382\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cstrong\u003eTypical Applications:\u003c\/strong\u003e The Mersen A110UD73LI900 is designed for semiconductor protection in power conversion equipment, including inverters, motor drives, and UPS systems. Its aR ultra-fast characteristic and low I²t values help limit fault energy affecting semiconductor devices such as diodes, thyristors, and IGBTs. Application suitability must be verified against the equipment voltage, protection coordination, and fuse operating characteristics.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eB2B Sourcing \u0026amp; Replacement Support:\u003c\/strong\u003e Apexon Supply provides industrial sourcing and replacement procurement support for the Mersen A110UD73LI900 \/ A110URD73LI0900 high-speed fuse. Buyers should confirm the exact catalogue number, electrical ratings, aR protection characteristic, Size 73 housing, LI slotted blade configuration, and striker requirements before ordering. An aR semiconductor fuse must not be assumed to provide full-range overload protection.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eRequest a Quote:\u003c\/strong\u003e Contact Apexon Supply with \u003cstrong\u003eCatalogue No A110UD73LI900\u003c\/strong\u003e, \u003cstrong\u003eItem number L300689\u003c\/strong\u003e, required quantity, and application requirements for B2B quotation, technical alignment, or replacement sourcing support.\u003c\/p\u003e","brand":"Mersen","offers":[{"title":"1 pcs","offer_id":68256901792023,"sku":null,"price":300.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":68256901824791,"sku":null,"price":600.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":68256901857559,"sku":null,"price":1200.0,"currency_code":"USD","in_stock":true},{"title":"12 pcs","offer_id":68256901890327,"sku":null,"price":2400.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/mersen-a110ud73li900-l300689-high-speed-semiconductor-fuse.png?v=1794284466","url":"https:\/\/www.apexonsupply.com\/products\/mersen-a110ud73li900-l300689-semiconductor-fuse","provider":"Apexon Solutions LLC","version":"1.0","type":"link"}