{"product_id":"121300r3-s-c-electric-sm-4-medium-voltage-power-fuse-7200v-200a-class-e","title":"121300R3 - S\u0026C Electric SM-4 Medium Voltage Power Fuse 7200V 200A Class E","description":" \t\t\t\t\t\t\t\t\t\t\u003ch2\u003e121300R3\u003c\/h2\u003e                                         \u003cbr\u003e \t\t\t\t\t\t\t\t\t\t\u003cb\u003e121300R3\u003c\/b\u003e is an S\u0026amp;C Electric SM-4 medium-voltage power fuse designed for reliable overcurrent protection in outdoor distribution substations. This Class E rated fuse operates at 7200V AC with a 200-ampere continuous current rating and delivers fast, positive fault interruption through high-speed arc elongation in a solid-material-lined bore. The fuse features a silver or pretensioned nickel-chrome current-responsive fusible element with solderless, brazed construction, ensuring precise melting time-current characteristics with only 10% total tolerance in melting current. The SM-4 design includes an auxiliary bore that delays arc extinction for low-magnitude faults while enhancing deionizing gas generation for moderate-to-high faults, providing superior coordination with protective relays and other distribution equipment. \u003cul\u003e\n\u003cli\u003eVoltage Rating: 7200V AC nominal\u003c\/li\u003e\n\u003cli\u003eCurrent Rating: 200 amperes RMS symmetrical\u003c\/li\u003e\n\u003cli\u003eFuse Type: SM-4 medium-voltage power fuse\u003c\/li\u003e\n\u003cli\u003eClass Rating: Class E\u003c\/li\u003e\n\u003cli\u003eInterrupting Rating: 15,600 amperes RMS symmetrical at 60 Hz\u003c\/li\u003e\n\u003cli\u003eSpeed: Standard velocity operation\u003c\/li\u003e\n\u003cli\u003eFusible Element: Silver or pretensioned nickel-chrome\u003c\/li\u003e\n\u003cli\u003eConstruction: Solderless, brazed terminals\u003c\/li\u003e\n\u003cli\u003eMelting Current Tolerance: 10% total tolerance\u003c\/li\u003e\n\u003cli\u003eArc Extinction: Solid-material-lined bore with deionizing gas generation\u003c\/li\u003e\n\u003cli\u003eApplication: Transformer and capacitor bank protection in outdoor distribution\u003c\/li\u003e\n\u003cli\u003eMounting: Complete factory-assembled and adjusted\u003c\/li\u003e\n\u003c\/ul\u003eAt \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: 121300R3\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 : SM-4\u003c\/li\u003e\n\u003cli\u003eVoltage : 7200\u003c\/li\u003e\n\u003cli\u003eAmperage : 200\u003c\/li\u003e\n\u003cli\u003eClass Rating : E\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 : 2 \u003c\/li\u003e\u003c\/ul\u003e                                         \u003cbr\u003e                                          ","brand":"S\u0026C Electric","offers":[{"title":"New","offer_id":45137158865055,"sku":"121300R3-New","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Re-Certified","offer_id":45137158897823,"sku":"121300R3-ReCert","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0500\/2349\/7887\/files\/S_CElectric121300R3.webp?v=1759930773","url":"https:\/\/essentialparts.com\/products\/121300r3-s-c-electric-sm-4-medium-voltage-power-fuse-7200v-200a-class-e","provider":"Essential Electric Supply","version":"1.0","type":"link"}