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Blue Sea Systems 4378 WeatherDeck 12V DC 8-Position Waterproof Circuit Breaker Panel

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

4378
06/01/2036 1:43 AM
Sale Price

$176.09

In Stock (9)

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Usually delivered within 2 days

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Product Details

The Blue Sea Systems WeatherDeck 4378 is a rugged, waterproof circuit breaker panel engineered for the harshest marine environments. With IP67 waterproof certification, this 8-position panel is ideal for flybridge, open cockpit, or any exposed installation where weather protection is critical.

Key Features:

  • IP67 rated waterproof protection - submersible to 1 meter for 30 minutes when installed with supplied gasket
  • 12V DC operation with 8 protected circuits
  • Flexible mounting orientation - can be installed in any of four different positions (horizontal or vertical)
  • Green LED backlighting illuminates circuit labels for low-light visibility
  • Colored LED indicators show circuit status: ON, OFF, or tripped breaker
  • Convenient breaker reset buttons located on panel face between switch and label
  • UV-stabilized waterproof boots protect switches from sun damage and moisture
  • Includes square circuit labels that can be positioned above, below, left, or right depending on mounting orientation
  • 45A cumulative panel rating with individual circuit breakers rated at 15A @ 12V DC
  • Gray finish complements most marine installations
  • Backed by Blue Sea Systems' lifetime warranty

This panel measures 7 11/16" H x 4 1/4" W x 3 1/2" D and carries CE certification. The WeatherDeck design eliminates the need for separate fuse panels in exposed locations, providing reliable circuit protection where traditional panels would fail.

Products specifications

Amperage

100 Amps at 12 Volts DC

Mounting Hardware

ATO/ATC Fuses; Mounting Hardware (Sold Separately)

Type

Fuse Panels

ISO Approved

IP67-Water Resistant

Warranty Details

Lifetime

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