The Littelfuse Indicator 75-600VAC Powr-Gard 40A Fuse FLSR40ID is a high-quality electrical fuse designed for interior use. With a maximum amperage of 40A and a current rating of 40A, this D-Type Cartridge fuse is suitable for a variety of electrical equipment and supplies. The multicolor design and copper material ensure durability and reliability, while the slow-blow time-delay fuse speed provides added protection against short circuits. Ideal for troubleshooting and maintenance purposes, this fuse is a valuable addition to any industrial or commercial setting.