Best Marine Fuse Blocks for Small Boats in 2026
Disclosure: The Marine Method may earn a commission from qualifying purchases made through some links on this page. This does not affect our editorial recommendations. QUICK ANSWER A fuse block is one of the simplest ways to organize and protect the electrical circuits on a small boat. Instead of having separate inline fuses scattered throughout the wiring, a marine fuse block provides a centralized location for protecting circuits such as: Navigation lights Bilge pumps Fish finders GPS VHF radios USB outlets Cabin lights Stereo equipment Other small DC accessories For most small boats with several low- to medium-current accessories, an ATO/ATC blade-fuse block is a practical starting point. The Blue Sea Systems ST Blade range currently includes several configurations, including 6- and 12-circuit models, versions with integrated negative buses, and compact options. The 5028 and 5029, for example, are rated at 100A per block and 30A per circuit. For higher-current applications, ...