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Blue Sea Systems 3133 SMS Panel Enclosure DC Main & 3 Branch Circuit Breaker 12/24V

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

3133
08/02/2036 3:41 PM
Sale Price

$364.03

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Product Details

The Blue Sea Systems 3133 is a Surface Mount System (SMS) panel enclosure designed to house DC circuit breakers and other large-frame devices in marine, RV, and powersports electrical systems. Configured with one 12/24V DC main breaker position and three 12/24V DC branch circuit positions (15A each), this enclosure provides a clean, organized, and weather-resistant solution for onboard DC power distribution.

Constructed from a glass-filled polycarbonate base with a clear cover, the 3133 allows easy visual monitoring of circuit breaker status without opening the enclosure. The overlapping cover design adds structural strength while improving gasket protection, and the oversized, formed-in-place seamless PUR gasket delivers a reliable weatherproof seal.

Key Features:

  • Blank apertures for custom breaker loading
  • Glass-filled polycarbonate base for durability
  • Clear cover for easy circuit breaker status monitoring
  • Overlapping cover design for added strength and gasket protection
  • Oversized seamless PUR gasket for weatherproof sealing
  • Easily removable stainless steel hinge pin for unobstructed installation
  • Stainless steel latch secures cover without penetrating the enclosure
  • Compatible with Carling Technologies™ A and C Series Flat Rocker and ELCI Main circuit breakers
  • Includes waterproof cable glands
  • 6 x Amber LED lights for backlighting and ON indication
  • Stainless steel mounting hardware included

Technical Specifications:

  • Circuit Configuration: 1 x 12/24V DC Main + 3 x Branch 12/24V DC (15A)
  • Overall Dimensions (H x W x D): 7.6" x 7.4" x 4.7" (192 x 188 x 120 mm)
  • Enclosure Dimensions (H x W x D): 6" x 6" x 4" (152 x 152 x 102 mm)
  • LEDs Installed: 6 x Amber

The Blue Sea Systems SMS series is trusted by marine electricians and installers worldwide for its robust construction and flexible configuration. The 3133 is ideal for boats, RVs, and off-grid DC systems requiring a compact, professional-grade 12V or 24V circuit breaker panel.

Quick shipping. Item was correct. Great transaction.

Fast shipping Part was what i expected And the price was bellow anything in my area

Good Experience

Very good, Item was as expected

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