The Bussmann FNM-1 Time Delay Fuse is a high-quality electrical fuse designed for interior use. This cartridge-type fuse has a maximum amperage of 250A and is suitable for single-phase AC systems. With a time-delay/slow-blow operation method, this fuse offers reliable protection for electrical circuits. Made of aluminum and featuring a green color, this fuse is easy to identify and install in a horizontal or vertical orientation. The pack includes 10 pieces per box, providing ample supply for various electrical applications. Bussmann, a trusted brand in the industry, ensures the quality and performance of this current-limiting fuse.