Bussmann LPS-RK-125SP, 125 Amp 600V Time-Delay/Slow Blow Class RK1 Fuse Dimension: 0.41" Dia x 1.5" L (10.3 x 38.1mm) Cylindrical Midget TIME DELAY 125A 600V This LPS-RK-125SP could be used to substitute for Littlelfuse LLSRK125, Ferraz Shamwut/Mersen A6D125R