{"product_id":"s-c-electric-company-123150r4-fuse-refill-sm-4","title":"S\u0026C Electric Company 123150R4 Fuse Refill SM-4","description":"\u003cdiv\u003e\u003cp\u003eThe S\u0026amp;C Electric Company 123150R4 SM-4 fuse refill unit is a standard-speed, 100E-rated refill designed for use in SM-4 power fuse holders. Rated for 25 kV nominal (27 kV maximum), this refill supports a 100 ampere class for outdoor distribution applications and is used to restore service after a fuse element has operated within an SM-4 assembly. The 123150R4 is part of S\u0026amp;C’s SM-4\/SM-4 family of high-voltage fuses used in outdoor distribution networks up to 25 kV nominal; it’s compatible with SM-4 holders and is selected based on the system’s voltage class and protection requirements. In practice, technicians replace the spent fuse element by inserting this refill into an SM-4 holder, allowing the protective circuit to be restored without replacing the entire fuse assembly. Other closely related refills in the same family include higher voltage variants such as 124150R4 for 34.5 kV nominal equipment, but the 123150R4 specifically serves 25 kV nominal systems. This unit is designed for standard-speed protection, balancing interrupting capability and reset times for reliable distribution protection in substations and feeder lines.\u003c\/p\u003e\u003c\/div\u003e","brand":"S\u0026C","offers":[{"title":"New","offer_id":46284106399978,"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-123150r4-fuse-refill-sm-4","provider":"GTG Hardware","version":"1.0","type":"link"}