{"product_id":"s-c-electric-company-121300-r4-sm-4-refill-unit-power-fuse","title":"S\u0026C Electric Company 121300-R4 SM-4 Refill Unit Power Fuse","description":"\u003cdiv\u003e\u003cp\u003eS\u0026amp;C Electric Company’s 121300-R4 SM-4 Refill Unit is a replacement power fuse element designed for use in SM-4 fuse holders. It is rated for 7.2 kV nominal operation (8.3 kV maximum) with a 200E amperage rating, intended for SM-4 Holders rated at 7.2 kV. This refill unit fits SM-4 and SML-4 holders and is listed for SME-4Z mountings, enabling quick restoration of protection in outdoor substations and distribution environments that use S\u0026amp;C’s SM-4 protection scheme. The 121300R4 designation identifies the 7.2 kV version within the SM-4 refill family (the higher-voltage companion is 122300R4, which is 14.4 kV nominal, 17.0 kV max). When a fuse element has operated, the refill unit can be installed to reestablish the protection configuration without replacing the entire holder. \u003c\/p\u003e\u003c\/div\u003e","brand":"S\u0026C","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":46284106170602,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8039\/3450\/files\/GTG-STOCK-022.png?v=1788727428","url":"https:\/\/gtghardware.com\/products\/s-c-electric-company-121300-r4-sm-4-refill-unit-power-fuse","provider":"GTG Hardware","version":"1.0","type":"link"}