Fuse, 400 A, 250V AC, 250V DC, Class RK1, LPN-RK-SP Series, Nonindicating, Time Delay, Body Style Blade, Rejection, Interrupt Rating 100kA at 250V DC, 300kA at 250V AC, Fuse Size 8-5/8 in L x 2-3/8 in dia, Length 8 5/8 in, Diameter 2 3/8 in, Equivalent Brand and Series Bussmann LPN-RK-SP, Littelfuse LLNRK, Mersen A2D-R, Equivalent Series A2D-R, LLNRK, LPN-RK-SP, Compatible Fuse Block Series HM600, R250, Body Material Melamine, Dual Element