Blue Sea 5006100 MAXI Fuse Block - 30-80A

The Blue Sea 5006100 MAXI Fuse Block – 30-80A is the marine electrical system upgrade that serious boaters and anglers depend on when reliability matters. Whether you're running a center console offshore, a cruising yacht, or a fishing platform loaded with electronics and auxiliary gear, this ignition-protected fuse block handles the high-amperage distribution demands of modern marine vessels. It's the successor to the original Blue Sea 5006, engineered for applications where standard fuse holders simply won't cut it—particularly in saltwater environments where corrosion resistance and fail-safe protection are non-negotiable.

Built with Blue Sea Systems' proven ignition-protected design, this MAXI fuse block accepts wire gauges from 18 AWG up to 4 AWG, providing flexible wiring configurations to suit diverse rigging layouts on deck or in the engine room. The block supports a maximum amperage rating of 80A, making it ideal for distributing power to multiple high-draw circuits—thruster systems, large windlass units, refrigeration, heating, or redundant battery banks. Its versatile wiring orientations eliminate guesswork during installation, while the integrated label recess keeps circuit identification visible and organized, critical when troubleshooting on the water far from shore support.

Professional marine electricians and liveaboard cruisers favor this fuse block for its compact footprint—just 3 × 2 × 7 inches—and its ability to consolidate multiple circuits into a single, corrosion-resistant hub. Installation is straightforward on existing systems upgrading from the 5006 model, and its MAXI amperage range (30–80A) handles everything from modest recreational vessels to larger displacement boats with serious electrical loads. Pair it with quality marine-grade wire and appropriate MAXI fuses to complete a distribution system that performs reliably in salt spray, high humidity, and the demanding electrical cycles of extended time on the water.