{"product_id":"121060r3-s-c-electric-40a-7-2kv-sm-4-power-fuse-refill-unit","title":"121060R3 - S\u0026C Electric 40A 7.2kV SM-4 Power Fuse Refill Unit","description":" \t\t\t\t\t\t\t\t\t\t\u003ch2\u003e121060R3\u003c\/h2\u003e                                         \u003cbr\u003e \t\t\t\t\t\t\t\t\t\t\u003cb\u003e121060R3\u003c\/b\u003e is a 40-ampere SM-4 power fuse refill unit manufactured by S\u0026amp;C Electric for outdoor distribution substations and panel applications. This fuse is rated for 7.2 kV nominal voltage and provides fast, positive fault interruption through high-speed arc elongation in a solid-material-lined bore. The SM-4 design utilizes an auxiliary arcing rod and spring-cable assembly to achieve reliable overcurrent protection with efficient deionizing action. The fuse element melts under overcurrent conditions, severing the strain wire and initiating the arcing process for rapid fault clearing. \u003cul\u003e\n\u003cli\u003eAmperage Rating: 40A\u003c\/li\u003e\n\u003cli\u003eVoltage Rating: 7.2 kV nominal\u003c\/li\u003e\n\u003cli\u003eFuse Type: SM-4 Power Fuse Refill Unit\u003c\/li\u003e\n\u003cli\u003eMounting Style: Standard panel accessories\u003c\/li\u003e\n\u003cli\u003eArc Interruption: High-speed elongation with solid-material-lined bore\u003c\/li\u003e\n\u003cli\u003eApplication: Outdoor distribution substations, transformer and cable protection\u003c\/li\u003e\n\u003cli\u003eStrain Wire Activation: Initiates arcing upon overcurrent\u003c\/li\u003e\n\u003cli\u003eAuxiliary Arcing Rod: Enhances arc extinction and deionization\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: 121060R3\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 : 40\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":45137158013087,"sku":"121060R3-New","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Re-Certified","offer_id":45137158045855,"sku":"121060R3-ReCert","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0500\/2349\/7887\/files\/121060R3.webp?v=1759868472","url":"https:\/\/essentialparts.com\/products\/121060r3-s-c-electric-40a-7-2kv-sm-4-power-fuse-refill-unit","provider":"Essential Electric Supply","version":"1.0","type":"link"}