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Blue Sea Systems 5118BSS Class T Fuse 250 Amp 160V DC Bolt-On

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

5118BSS
06/01/2036 1:57 PM
Sale Price

$71.02

In Stock (10+)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Blue Sea Systems 5118BSS is a Class T (also designated A3T) bolt-on fuse designed for high-current DC electrical systems in marine, RV, and automotive applications. This 250-amp fuse provides fast-acting overcurrent protection for battery banks, inverters, and other high-power electrical equipment operating at up to 160 volts DC.

Key Features:

  • Class T (A3T) fast-acting fuse rated for 250 amps at 160 volts DC
  • Bolt-on terminal design for secure, high-current connections
  • Compact JJN size suitable for tight installation spaces
  • High interrupting rating for superior circuit protection
  • UL recognized and meets industry safety standards
  • Designed for marine-grade reliability in harsh environments

Class T fuses are ideal for protecting expensive electrical components from short circuits and overloads. The bolt-on design ensures a solid electrical connection that won't loosen due to vibration, making this fuse particularly well-suited for mobile applications. Blue Sea Systems manufactures this fuse to meet the demanding requirements of marine electrical systems where reliability and safety are paramount.

Products specifications

Amps

250A

Fuse Type

JJN

Size

2.75''L x 1.31''W

Autoplicity site was easy to navigate through and checkout was user friendly.

Fast, inexpensive.

I was able to quickly check to verify part fit my vehicle. We will see what shows up, prices seem good.

Ordering was easy, lets see how quickly the product ships

Easy

Nice and Easy

Received package ok.

price point was great and free shipping put it over the top

Quick, easy to the point. Had the same tire I was looking to replace.

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