Blue Sea Systems ST-Blade Fuse Blocks

Blue Sea Systems ST-Blade fuse blocks offer a versatile line of ATO/ATC blade-fuse distribution products for marine and automotive electrical systems. Common features across the line include tin-plated copper buses and fuse clips, screw terminals that accept ring or spade terminals, and design options for 4, 6, 8 or 12 circuits. Models are offered with clear insulating covers (cover designs meet ABYC/USCG insulation requirements and often include label recesses, push-button latches and spare-fuse storage), or without covers for install flexibility; some compact models provide single-side wiring and ignition protection when the cover is secure. Configurations include negative-bus, split-bus, independent circuits, terminal-mount versions that attach to battery studs, and surface-mount compact blocks. Units commonly specify max 32V DC, ~30A per circuit (with block ratings around 100A), and note that fuses are sold separately. Corrosion-resistant, tin-plated copper clips and buses improve conductivity and durability for harsh environments.