{"product_id":"s-c-electric-company-121100-r4-power-fuse-7-2kv-65a","title":"S\u0026C Electric Company 121100-R4 Power Fuse 7.2kV 65A","description":"\u003cdiv\u003e\u003cp\u003eThe S\u0026amp;C Electric 121100-R4 is a power fuse refill intended for 7.2 kV medium‑voltage distribution systems, designed to install into SM‑4 and SML‑4 fuse holders and to be used with Alduti‑Rupter switches in the same protection scheme. It carries a nominal voltage rating of 7.2 kV with a maximum operating voltage of 8.3 kV, and it is rated for a continuous current of 65 A (catalog references denote this as 65E), allowing it to interrupt fault currents within those limits and protect downstream equipment from overcurrents, while matching the electrical characteristics required by typical 7.2 kV class feeders. As a refill element, the 121100-R4 is not a standalone switch or enclosure; it is the replaceable insert that restores protection after a fuse operation, enabling quick field maintenance and reduced downtime in distribution feeders, service entrances, and substation extensions where rapid fuse replacement is needed. Compatible with the SM‑4\/SML‑4 family and used in conjunction with corresponding switchgear configurations, this refill unit supports compact, modular protection for outdoor or indoor installations and aligns with the high‑voltage switching practices commonly associated with S\u0026amp;C’s power fuse portfolio. The 121100‑R4’s 7.2 kV nominal (8.3 kV max) rating and 65 A current rating place it among the standard refill options for 7.2\/8.3 kV systems, providing a reliable, field‑replaceable solution that keeps distribution networks protected while minimizing service interruptions.\u003c\/p\u003e\u003c\/div\u003e","brand":"S\u0026C","offers":[{"title":"New","offer_id":46284106072298,"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-121100-r4-power-fuse-7-2kv-65a","provider":"GTG Hardware","version":"1.0","type":"link"}