Marine Fuse Blocks | Wholesale Marine Shop Marine Fuse Blocks at Wholesale Marine for low prices on top marine brands like Blue Sea Systems and Sea Dog Marine. Order today for same-day shipping! Marineparts - TERMINAL & FUSE BLOCKS FUSE BLOCK: Gang, 8- Heavy duty black molded plastic base. Use with SFE or AGC fuses up to 20 amps. Brass fuse clips and 8-32 terminal screws. A common bus bar connects the hot side of the fuses for power feed. A separate bus bar is provided for ground or unfused common hot feed.