Fuse, 50 A, 250V AC, 250V DC, Class RK1, KTN-R Series, Nonindicating, Fast Acting, Body Style Cylindrical, Rejection, Interrupt Rating 100kA at 250V DC, 200kA at 250V AC, Fuse Size 3 in L x 81/100 in dia, Length 3 in, Diameter 81/100 in, Equivalent Brand and Series Bussmann KTN-R, Littelfuse KLNR, Mersen A2K-R, Equivalent Series A2K-R, KLRN, KTN-R, Compatible Fuse Block Series R250, RM250, RM251, RM252, RM254, RM256, RM600, RM601, RM602, RM604, RM606, Body Material Melamine, Single Element