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Blue Sea Systems 2151 Double Battery Terminal Fuse Block 30-300A

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

2151
06/01/2036 1:46 AM
Sale Price

$35.52

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Blue Sea Systems 2151 Double Battery Terminal Fuse Block provides circuit protection directly at the battery terminal without requiring wire cutting. This innovative design allows you to attach the fuse block directly to your battery post, select the appropriate fuse (30A-300A), and connect your conductors—ideal for space-constrained installations.

Key Features:

  • Isolated stud design uses standard 5/16" hardware and permits stacking of terminals
  • Dual fuse positions for protecting two separate high-amperage circuits
  • Perfect for DC main, inverter, windlass, and bow thruster circuit protection
  • Weatherproof construction suitable for harsh marine environments and open-cockpit boats
  • Ignition protected for safe installation in gasoline-powered boat engine rooms
  • Insulating cap prevents accidental short circuits and terminal contact
  • Compact design delivers high current protection in tight spaces

Specifications:

  • Maximum amperage: 300A
  • Voltage rating: 58V DC
  • Terminal stud size: 5/16"
  • Number of fuse positions: 2
  • Compatible with 5/16" or 3/8" ring terminals

This double fuse block is engineered for marine and RV applications where reliable circuit protection and space efficiency are critical. Fuses sold separately.

Products specifications

Amperage

58 Volts Maximum

Mounting Hardware

Terminal Fuses (Sold Separately)

Type

Fuse Blocks

ISO Approved

ABYC/USCG Requirements

Warranty Details

Lifetime

I had an issue with a shipping discount. I received a 30% shipping discount but the cart would not apply it.

Great website....quick and easy!

Very Convenient...Although this is only half the battle

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Great website navigation

Awesome and cheap

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Great Company Smooth Transaction.. Thanks

Bought Motive Brake Bleeding Kit (international) . Best Pricing all around.<br>Ordered on Tuesday , received via UPS Ground (cheap shipping) on Thursday Noon.<br>Excellent Packing.<br>Super Fast Shipping.<br>Very Statisfied with my on-line order.<br>Highly Recommended.

Ordering was quick and easy. We'll have to wait and see how the rest goes.

Good deals

Best price and instant service.<br>What more can you ask for.

We ordered a cover for a pickup truck bed and were so pleased that it was shipped so quickly. The price was the lowest that we found on the internet or in any of the stores where we looked. We were notified by e-mail as soon as it shipped. We will definitely shop this site again.

Great prices and prompt shipping

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