Fuses – Lot of 26 – NEW! Perfect for C7 & C9 Christmas Lights 5 AMP 125 Volt 5x20mm (About 3/4″ inch long.) Fast Blow,glass tube body cartridge fuse These are the spare / replacement fuses you need for those great Christmas lights you like. Buy your spare fuses now, while you’re thinking about them. Your string lights will be ready to go next year! NOTE: VOLTAGE RATING For general circuit protection, the voltage rating on the fuse should be equal to, or greater than the circuit voltage of the circuit in which the fuse is applied. Fuses can be used at any voltage below the fuse voltage rating; a 250V fuse can be used in 125V circuits. I buy these fuses in bulk, 20,000 at a time. The manufacturer stamps them as either 125V or 250V, with the exact same electrical specifications.