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Blue Sea Systems 5056 ST Blade Water Resistant Fuse Block with Cover

Manufacturer

Blue Sea Systems

<p>When electrical reliability can mean the difference between a successful voyage and a dangerous situation, marine professionals and enthusiasts turn to Blue Sea Systems. Founded in 1992, this American manufacturer has built a reputation for creating electrical components specifically engineered to withstand the unforgiving marine environment. Every product reflects a commitment to safety standards and real-world performance that has made Blue Sea Systems a leading name in marine and specialty vehicle electrical systems.</p> <h3>Engineering for the Marine Environment</h3> <p>Blue Sea Systems develops and manufactures dependable AC and DC electrical products for marine and specialized vehicle applications, designed in the USA and engineered to excel in challenging environments. The marine environment presents unique challenges—salt spray, constant vibration, temperature extremes, and moisture exposure—that can quickly degrade inferior electrical components. Blue Sea Systems addresses these challenges through careful material selection, rigorous testing protocols, and designs that prioritize both safety and serviceability. Their components are engineered for marine use and align with the intent of ABYC E-11: AC and DC Electrical Systems on Boats and relevant USCG electrical regulations.</p> <h3>Commitment to Safety Standards</h3> <p>Safety standards aren't just guidelines for Blue Sea Systems—they're fundamental to every product design. All Blue Sea Systems marine battery disconnect switches comply with the ABYC C-7 certification, demonstrating their commitment to meeting and exceeding industry safety requirements. The company maintains ABYC-certified employees across multiple departments, from engineering to technical support, ensuring deep expertise in marine electrical system design and installation standards.</p> <h3>Comprehensive Product Range</h3> <p>Blue Sea Systems offers an extensive catalog designed to address every aspect of marine electrical systems. Their <a href="/7262-blue-sea-systems-circuit-breakers-200260">circuit breakers</a> provide resettable overcurrent protection with trip-free designs and clear trip indication for quick diagnostics. For power management, their <a href="/7262-blue-sea-systems-battery-switches-manual-200149">battery switches</a> offer reliable methods for controlling battery banks and disconnecting loads during storage or emergencies, with ABYC C-7 compliance guaranteed.</p> <p>Monitoring system health is critical aboard any vessel, which is why their <a href="/7262-blue-sea-systems-battery-monitors-volt-meters-200146">battery monitors and volt meters</a> provide accurate real-time data to help operators make informed decisions about power usage and charging. The company's <a href="/7262-blue-sea-systems-terminal-blocks-bus-bars-201059">terminal blocks and bus bars</a> create organized, serviceable connection points that simplify installation and future modifications. For keeping batteries properly charged, Blue Sea Systems offers <a href="/7262-blue-sea-systems-battery-chargers-200141">battery chargers</a> engineered with features like automatic charging relay compatibility and proper charge profile management.</p> <h3>Built by Boaters, for Boaters</h3> <p>Blue Sea Systems was founded based on a commitment to create innovative high quality marine electrical products to improve the safety, simplicity, and reliability of boating, with employees who are active boaters applying their passion to designing, developing, and building products. This firsthand experience translates into practical features like modular layouts, standardized footprints, and installer-centric designs that streamline panel work and serviceability. The result is a product line that addresses real challenges faced on the water, backed by comprehensive technical documentation and support resources that help both professionals and DIY enthusiasts complete installations with confidence.</p>

Part Number

5056
08/04/2036 5:38 AM
Sale Price

$45.91

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Blue Sea Systems 5056 ST-Blade Water Resistant Fuse Block provides reliable circuit protection for marine and automotive applications in a compact, space-saving design. This 4-position fuse block accepts ATO/ATC fast-acting blade fuses and low-profile circuit breakers, featuring a water-resistant construction that meets ABYC/USCG insulation requirements.

Key Features:

  • Water-resistant design protects against moisture in harsh marine environments
  • Single-side nesting configuration allows wire entry from one side to maximize installation space
  • Accepts standard ATO and ATC fast-acting blade fuses plus ATO/ATC-style low-profile circuit breakers
  • Standard ring or fork terminals enable simple wiring with common tools
  • Tin-plated copper C11000 busses and fuse clips resist corrosion
  • Includes 3 wire plugs to maintain water-resistant rating when using fewer than 4 circuits
  • Nests with other ST-Blade fuse blocks and 100A bus bars for streamlined installations
  • Insulating cover includes spare fuse and fastener storage
  • Comes with four write-on circuit labels for easy identification

Specifications:

  • Capacity: 80A per block, 25A per circuit
  • Maximum Voltage: 32V DC
  • Bus Material: Tin-plated copper C11000
  • Wire Capacity: (1) 4-8 AWG input, (5) 10-16 AWG load
  • Screw Terminals: #8-32 with captive star lock washers
  • Mounting: Clearance for 1/4" (6mm) screws

Ideal for marine electrical systems, RVs, and other 12V/24V DC applications requiring protected circuit distribution in wet or damp environments.

Nice and easy

Convenient

can't wait to get it

So far good experience, waiting on order. Easy site to use

Good price and easy to negotiate the web site.

Fast shipping!

Easy navigation! Great Prices!!!

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