{"product_id":"820300-s-c-electric-smu-40-300a-4-8kv-standard-medium-voltage-fuse-unit","title":"820300 - S\u0026C Electric SMU-40 300A 4.8kV Standard Medium Voltage Fuse Unit","description":" \t\t\t\t\t\t\t\t\t\t\u003ch2\u003e820300\u003c\/h2\u003e                                         \u003cbr\u003e \t\t\t\t\t\t\t\t\t\t\u003cb\u003e820300\u003c\/b\u003e is a standard medium voltage fuse unit from S\u0026amp;C Electric, designed for reliable protection in distribution systems. This SMU-40 fuse unit is rated for 300 amperes continuous current and 4.8kV nominal voltage, making it suitable for a wide range of outdoor and substation applications. The 820300 fuse unit is engineered for fast, positive fault interruption using high-speed arc elongation and efficient deionizing action. It features a solid-material-lined bore and generates turbulent gases under fault conditions to safely extinguish arcs and prevent reignition. The unit is compatible with SMD-40 and SM-4 fuse mountings and is built for durability in demanding environments. \u003cul\u003e \u003cli\u003eManufacturer: S\u0026amp;C Electric\u003c\/li\u003e \u003cli\u003ePart Number: 820300\u003c\/li\u003e \u003cli\u003eSeries\/Frame: SMU-40\u003c\/li\u003e \u003cli\u003eContinuous Amperage: 300A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 4.8kV nominal\u003c\/li\u003e \u003cli\u003eMounting Type: SMU-40 compatible\u003c\/li\u003e \u003cli\u003eApplication: Outdoor distribution, substations\u003c\/li\u003e \u003cli\u003eInterrupting Rating: Standard speed\u003c\/li\u003e \u003cli\u003eConstruction: Solid-material-lined bore\u003c\/li\u003e \u003cli\u003eFeatures: High-speed arc elongation, efficient deionizing action\u003c\/li\u003e \u003cli\u003eCompatibility: SMD-40, SM-4 fuse mountings\u003c\/li\u003e \u003cli\u003eUse: Medium voltage protection\u003c\/li\u003e \u003c\/ul\u003e At \u003cb\u003eEssential Parts\u003c\/b\u003e, we offer \u003cb\u003efast shipping\u003c\/b\u003e, \u003cb\u003elowest price\u003c\/b\u003e, and \u003cb\u003eexpert support\u003c\/b\u003e to help you get the right product every time. \t\t\t\t\t\t\t\t\t\t\u003cbr\u003e                                          \t\t\t\t\t\t\t\t\t\t\u003ch3\u003e\u003cb\u003eSpecifications\u003c\/b\u003e\u003c\/h3\u003e \t\t\t\t\t\t\t\t\t\t\u003cul\u003e \t\t\t\t\t\t\t\t\t\t\t\u003cli\u003ePart Number: 820300\u003c\/li\u003e                                             \u003cli\u003eManufacturer : S\u0026amp;C Electric\u003c\/li\u003e\n\u003cli\u003eBrand : S\u0026amp;C Electric\u003c\/li\u003e\n\u003cli\u003eCategory : Fuse\u003c\/li\u003e\n\u003cli\u003eItem Subcategory : Medium Voltage\u003c\/li\u003e\n\u003cli\u003eType : SMU-40\u003c\/li\u003e\n\u003cli\u003eVoltage : 4800\u003c\/li\u003e\n\u003cli\u003eAmperage : 300\u003c\/li\u003e\n\u003cli\u003eClass Rating : SMU-40\u003c\/li\u003e\n\u003cli\u003eVelocity : Standard\u003c\/li\u003e \t\t\t\t\t\t\t\t\t\t\u003c\/ul\u003e                                         \u003cbr\u003e                                         \u003ch3\u003e\u003cb\u003eProduct Data\u003c\/b\u003e\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eWeight : 5.19 \u003c\/li\u003e\u003c\/ul\u003e                                         \u003cbr\u003e                                          ","brand":"S\u0026C Electric","offers":[{"title":"New","offer_id":44940762022047,"sku":"820300-New","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Re-Certified","offer_id":45168765501599,"sku":"820300-ReCert","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0500\/2349\/7887\/files\/S_CElectric820300.webp?v=1761155219","url":"https:\/\/essentialparts.com\/products\/820300-s-c-electric-smu-40-300a-4-8kv-standard-medium-voltage-fuse-unit","provider":"Essential Electric Supply","version":"1.0","type":"link"}