Fuse, 25 A, 600V AC, 600V DC, Class Midget, KLKD Series, Nonindicating, Fast Acting, Body Style Cylindrical, Nonrejection, Interrupt Rating 100kA at 600V AC, 50kA at 600V DC, Fuse Size 1-1/2 in L x 13/32 in dia, Length 1 1/2 in, Diameter 13/32 in, Equivalent Brand and Series Bussmann KLM, Littelfuse KLKD, Mersen ATM, Equivalent Series ATM, KLKD, KLM, Compatible Fuse Block Series L600M, Body Material Melamine, Single Element Fast-acting, nonindicating midget fuses open within seconds of being exposed to overloads and short circuits. Also called fast-blow midget fuses, they are highly sensitive to changes in current flow and don't tolerate temporary overload currents or power surges. They have no indicator for identifying a blown fuse, so they're sometimes used with an indicating fuse block.