Blue Sea Systems ST Blade Fuse Block 6 Independent Circuits

The Blue Sea Systems ST Blade Fuse Block with 6 Independent Circuits is built for situations where each circuit needs its own isolated positive feed rather than sharing a common distribution bus — useful when circuits are powered from different sources or need to stay electrically separated.

Key features

• 6 independent circuits, 30A per circuit, 40A per jumped circuit group, 32V DC maximum
• No shared positive or negative bus — each position is isolated unless jumpered
• Corrosion-resistant, tin-plated copper fuse clips reduce heat and improve efficiency
• Includes two terminal block jumpers to group circuits when a shared source is wanted
• Accepts ring or snap-fork terminals

The included jumpers let you bridge adjacent positions into a shared-source group rated to 40A when that's more practical than wiring six fully separate feeds — a flexible middle ground between a fully common-source block and six standalone in-line holders. This block has no cover, so mount it somewhere the exposed terminals won't be bumped or splashed.

It's a good fit for circuits that need to stay isolated for troubleshooting or redundancy reasons — for example, splitting nav electronics across two separate power sources — where a standard common-bus fuse block would tie everything together at the input. Consider this block specifically when circuit isolation matters more than convenience — for example, keeping a backup navigation light circuit electrically separate from the rest of the boat's lighting so a single fault elsewhere can't take it down too. Because there's no cover, keep spare ATO/ATC fuses stored elsewhere rather than relying on this block to hold them, unlike Blue Sea's covered ST Blade blocks.