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Blue Sea Systems 5032 ST Blade 12-Circuit Fuse Block 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

5032
06/01/2036 4:54 AM
Sale Price

$73.59

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 5032 ST Blade Fuse Block provides organized circuit protection for marine and automotive electrical systems. This compact 12-circuit fuse block features both positive and negative distribution buses, making it ideal for consolidating multiple circuits when panel space is limited or for protecting electronic installations in tight spaces.

Key Features:

  • 12 independent circuits with ATO/ATC blade fuse protection (1-40 amps)
  • Integrated negative bus for consolidated ground connections
  • Tin-plated copper buses and fuse clips rated for 30A per circuit, 100A total
  • Protective cover with push-button latch meets ABYC/USCG insulation requirements
  • Built-in storage for two spare fuses in cover
  • Positive and negative bus connections use #10-32 studs
  • Accepts ring terminals or snap fork terminals
  • Label recesses accommodate Blue Sea Systems Small Format Labels
  • Suitable for 24-hour circuits

Specifications:

  • Maximum amperage: 100A per block, 30A per circuit
  • Maximum voltage: 32V DC
  • Dimensions: 6.5" L × 3.31" W × 1.5" D
  • Mounting: #8 screws
  • Weight: 0.75 lbs

This fuse block can be powered from a single breaker on your main distribution panel and supply protected power to 12 additional circuits. Includes 20 write-on labels and accepts square pre-made labels. Fuses sold separately. Backed by Blue Sea Systems lifetime warranty.

Products specifications

Amperage

100 Amps at 32 Volts DC

Mounting Hardware

ATO/ATC Fuses; Mounting Hardware (Sold Separately)

Type

Fuse Blocks

Warranty Details

Lifetime

Its my first time using you--I&quot;ll let you know

Smooth transaction decent price but would have preferred free shipping which made your lower price equal to your competitors higher pricing. Just sayin

Been great so far, hopefully it ships nice n fast

Easy to order.

When I get my product I will comment

Nice

I looked around for few months on where to go to purchase JBA headers for my 01 Tundra. I came across Autoplicity and their prices were untouchable. I even called to speak with a sales representative and he gave me a discount code for my purchase. I would highly recommend doing business and plan on doing more business with them.

the delivery times are very very long but the price is right.

The site was easy to negotiate and the price was great. There were some discrepancies between the Google shopping description, the repreventative pics and the actual product. However, any of the variations would be fine so I did not pursue the discrpenc

Very easy to purchase items.

Very direct and effective. No BS.

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