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Blue Sea Systems 5191 Terminal Fuse Blocks

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  • Isolated stud design uses standard 1/4” hardware 

  • Provides high current protection in tight space constraints

  • Weatherproof

  • Insulating cap prevents accidental shorts 

  • Accepts 5/16” or 3/8” ring terminals

Availability: In stock


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This Terminal Fuse Block from Blue Sea Systems easily and economically satisfies ABYC 7” circuit protection rule by mounting on a 3/8” battery post, battery switch or busbar. The isolated stud design uses standard 1/4” hardware and allows stacking of terminals. The compact and high-amp fuse is appropriate for DC Main, inverter, windlass, and blow thruster circuit protection. This fuse block provides high current protection in areas with tight spaces. The block is also weatherproof, which makes it suitable for small open-cockpit boats and other difficult environments conditions. An insulated cap prevents accidental shorts and the block itself accepts 5/16” or 3/8” ring terminals.

Part Number: 5191