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Blue Sea Systems 5025 ST Blade ATO/ATC Fuse Block 6 Circuit with Negative Bus and 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

5025
06/01/2036 4:47 AM
Sale Price

$36.37

In Stock (10+)

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Usually delivered within 2 days

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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 5025 ST Blade Fuse Block provides organized circuit protection for marine and automotive electrical systems. This compact 6-circuit fuse block accepts standard ATO/ATC blade fuses and features both positive and negative bus bars, making it ideal for adding auxiliary circuits when your main panel is full or for protecting electronic installations in tight spaces.

Key Features:

  • 6 protected circuits with common source positive distribution bus
  • Integrated negative bus bar with #10-32 stud connections
  • Tin-plated copper buses and fuse clips for corrosion resistance
  • Protective cover with push-button latch meets ABYC/USCG insulation requirements
  • Built-in storage for two spare fuses in cover
  • Label recesses accept Blue Sea Systems small format labels
  • Accepts ATO and ATC fast-acting blade fuses from 1 to 40 amps
  • Accommodates ring or snap fork terminals
  • Suitable for 24-hour circuits
  • Includes 20 write-on labels

Technical Specifications:

  • Number of Circuits: 6
  • Maximum Current: 100A per block, 30A per circuit
  • Maximum Voltage: 32V DC
  • Bus Fasteners: #10-32 (positive and negative)
  • Mounting: #8 screws
  • Dimensions: 4.875" L x 3.3125" W x 1.5" H
  • Weight: 0.5 lbs

This space-saving fuse block allows you to run power from a single breaker on your distribution panel to protect up to 6 additional circuits, making it perfect for electronics, accessories, and auxiliary equipment. The compact design enables installation in confined spaces close to the loads being protected. Fuses sold separately. Backed by Blue Sea Systems lifetime warranty.

Products specifications

Amperage

100 Amps at 32 Volts DC

Mounting Hardware

Four #8 ScrewsATO/ATC Fuses (Sold Separately)

Type

Fuse Blocks

ISO Approved

ABYC/USCG Requirements

Warranty Details

Lifetime

Very easy and fast

WOW.. I ordered my liners very earlier in the morning on January 31st and I received them the very next day.They also had the best price and cheapest shipping rates I could find.

Product was as described, great price and reasonable shipping cost. Shipping was also very quick.

This part has been discontinued years ago, nice to find one.

Very easy. TY

paid for 2 day shipping i believe the shipping company screwed up but i needed it asap and it took to long missed my deadline. otherwise no complaints great product

Found what I needed. Order process was simple enough. Good experience

Good so far

Hard to,find these anywhere. Keep selling them!

Everything went good, order shipped out the next day. The prices were good but the shipping cost was way to high $25 dollars for 2 head gaskets and some bolts oil pan bolts.

Had a little trouble finding the item needed. A search option would be helpful.

Checking out the product was simple enough.

I haven't received my order yet but I am satisfied at how fast the order was processed and shipped. The website was very easy to navigate and best of all the prices were hard to beat. I believe I will be visiting this site again.

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