Fuse, 12 A, 250V AC, 160V DC, Class RK5, TR-R Series, Nonindicating, Time Delay, Body Style Cylindrical, Fits Fuse Block Style Rejection, Interrupt Rating 200kA at 250V AC, 20kA at 160V DC, Fuse Size 2 in L x 9/16 in dia, Length 2 in, Diameter 9/16 in, Equivalent Brand and Series Bussmann FRN-R, Edison ECNR, Littelfuse FLNR, Mersen TR-R, Equivalent Series ECNR, FLNR, FRN-R, TR-R, Compatible Fuse Block Series 2HKRFB, Body Material Polyester, Dual Element, Standards CSA, UL These 250VAC UL Class RK5 fuses are time delay and nonindicating. They tolerate temporary inrush currents without opening, which prevents nuisance-blowing from motor and equipment startups. Also called slow-blow Class RK5 fuses, these 200kA IR fuses open to disconnect an electrical circuit when exposed to sustained loads.