Blue Sea Systems 5046 ST Blade Fuse Block – 8-Circuit with Cover, 100 Amps

Meet the Blue Sea Systems 5046 ST Blade Fuse Block, a compact eight-circuit protection solution designed to fit where space is tight. Built to protect wiring and components in the event of an overload or short, this fuse block offers a clean, organized way to expand or retrofit power distribution without sacrificing panel footprint. Its rugged construction and practical layout make it a versatile choice for marine electronics and compact installations.

Space-saving design for tight installations

The block is sized to tuck into cramped panels, dashboards, or small enclosures while remaining easy to access. Terminals are concentrated on one side to streamline routing and minimize wiring drama, helping you achieve a tidy, professional look with less bulk behind the wall or panel.

• Compact design surface mounts for easy installation
• Terminals located on one side to minimize footprint
• Clear cover insulates fuses and terminals, supports write-on labels, and meets ABYC/USCG insulation standards

Protected, reliable circuit protection

Each downstream circuit is guarded by fuse clips and tin-plated copper buses, delivering up to 30A per circuit. This setup supports a single distribution feed and distributes power to eight outputs, making it suitable for adding circuits to existing panels or powering new electronics clusters. The positive distribution bus accepts #8-32 terminal screws for strong, corrosion-resistant connections.

Designed with marine and electronic installations in mind, the fuse block helps keep wiring orderly while keeping fuses and terminals accessible for inspection and labeling. The clear cover adds a layer of safety by isolating live components from accidental contact, aligning with common industry safety expectations.

Real-world use cases

Ideal when the main panel has run out of breakers or you’re building a compact system from the start. It can be fed by one breaker from the distribution panel and then distribute power to eight circuits, making it a practical solution for space-conscious projects such as small boats, compact vehicles, or custom electronics enclosures.

• Space-efficient for crowded panels or vessel electrical bays
• Simple one-breaker feed to eight downstream circuits

Note: This description emphasizes capabilities and design features to help you evaluate fit for your project. Actual performance depends on your overall electrical design and installation quality.