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Blue Sea Systems 4321BSS 4-Position Water-Resistant Circuit Breaker Panel with 12V Socket & Dual USB Charger

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

4321BSS
06/01/2036 4:45 AM
Sale Price

$83.76

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 4321BSS is a compact, water-resistant circuit breaker switch panel designed for marine, RV, and automotive applications. This versatile panel combines four illuminated 15A circuit breakers with a built-in 12V accessory socket and dual USB charging ports, providing both circuit protection and convenient power access in one low-profile unit.

Key Features:

  • Four illuminated 15A circuit breakers provide switching, ON indication, and overcurrent protection in a single component
  • Integrated 12V accessory socket and dual USB charger for powering devices and charging electronics
  • Silicon breaker boots and gasket protect against water ingress for reliable performance in wet environments
  • UV-stabilized polycarbonate/ABS panel surface is flame retardant and will not corrode
  • Industry-standard sizing and mounting pattern allows easy retrofitting into existing installations
  • Low-profile design facilitates installation in tight spaces
  • Fast-on circuit breaker connectors enable quick and straightforward wiring
  • Simple two-wire power connection using #10 ring terminals that screw directly to bus bars
  • Includes 15 square-format circuit labels that are easy to customize and replace

Specifications:

  • Nominal Voltage: 12V DC
  • Circuit Breakers: 4 positions, 15A each
  • USB Charging: Dual USB ports
  • Accessory Socket: 12V standard

This panel is ideal for organizing and protecting electrical circuits in boats, recreational vehicles, off-road vehicles, and other mobile applications where space is limited and water resistance is essential.

Products specifications

Color

Gray

Positions

4 +12V +Dual USB

Size

4-5/8" W x 6-5/8" H

very quick and easy to order

Great,Easy,and Cheap

Was good fast easy

Fastest standard shipping on the internet

Only complaint is cost of shipping.

Quick.

Thank you so much!!! Amazing help and product supply.

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