Blue Sea 5046 ST Blade Compact Fuse Blocks - 8 Circuits w/Cover

The Blue Sea 5046 ST Blade Compact Fuse Block is an eight-circuit surface mount fuse distribution system engineered for harsh marine and automotive environments where reliability and space efficiency are non-negotiable. Built to accept ATO and ATC fast-acting blade fuses, this compact block provides protected circuit management in a footprint that maximizes installation flexibility in tight electrical bays—critical for vessel automation systems, vehicle auxiliary power networks, and power distribution installations where real estate is limited.

The single-side wiring entry design concentrates all wire terminations on one surface, streamlining installation and reducing the horizontal footprint required for wire routing. Each of the eight circuits operates independently, allowing circuit-level fault isolation without disrupting unrelated loads. The unit is ignition-protected to ISO 8846 and SAE J1171 standards, meaning it meets the chemical and thermal resistance requirements for gasoline engine compartment use. The included insulating cover meets ABYC standards and prevents accidental contact with live terminals—a critical safety feature in saltwater environments where corrosion and humidity create conductive pathways.

This fuse block suits marine electrical systems, vehicle aux power setups, recreational vehicle power distribution, and any 12V or 24V DC system requiring multi-circuit protection in a confined space. Operators working with custom electrical builds—whether in marine patrol vessels, off-road recovery rigs, or auxiliary power systems—benefit from Blue Sea's reputation for engineered reliability in corrosive and high-vibration environments. The compact profile makes it a preferred choice when panel space and weight are design constraints.