Product details


5056100 - Water Resistant ST-Blade Fuse Block with Cover

This Blue Sea fuse block provides water-resistant circuit protection for ATO/ATC fuses and circuit breakers in a compact footprint.  Now with wing screws for toolless access.


  • Water-resistant design with a standard ring or spade-type terminals
  • Allows for simple wiring with standard tools
  • Accepts a wide range of wire sizes
  • Includes 3 wire plugs to maintain a water-resistant rating if less than 4 loads are required
  • Accepts ATO and ATC fast acting blade fuses
  • Accepts ATO/ATC-Style Low Profile Circuit Breakers
  • Nests with other ST-Blade water-resistant fuse blocks and water-resistant 100A busbars to reduce wire
  • 5056100 meets ABYC/USCG insulation requirements
  • Tin-plated copper busses and fuse clips
  • Includes four write-on circuit labels
  • Spare fuse and fastener storage in cover
  • Wing screws designed for tool-free installation of cover to meet ABYC compliance

Technical Specifications:

  • Cover - yes
    • Maximum Voltage - 32V DC
    • Bus Material - Tin-plated Copper
    • Mounting Holes - Accepts 1/4" (6mm) screws
    • Terminal Screws - 4 x # 8-32 with captive star lock washer
    • Wire Size - Input - (1) 8 AWG to 4 AWG 
    • Wire Size - Load - (4) 16 AWG to 10 AWG 

In the Box:

  • 5056100 Busbar
  • Instruction Manual

*Sold as an Individual

Quick Guide (pdf)