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Blue Sea Systems 5511E e-Series Dual Circuit Plus Battery Switch 350A

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

5511E
06/01/2036 9:21 AM
Sale Price

$49.92

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 e-Series Dual Circuit Plus Battery Switch provides professional-grade power management for marine electrical systems. This advanced switch isolates Start and House battery circuits, preventing accidental discharge of the starting bank while protecting sensitive electronics from voltage sags and spikes during engine cranking. The emergency combine feature allows cross-connection of both battery banks when additional power is needed for starting or critical radio calls.

Key Features:

  • Dual circuit design maintains battery bank separation while enabling simultaneous switching
  • Emergency combine function draws power from both batteries when needed
  • 350 ampere continuous rating per circuit with 1000 ampere total capacity
  • 700 ampere cranking rating for 30 seconds handles high-demand starting loads
  • Long 7/8" tin-plated copper studs accept up to 4/0 AWG cables
  • Ignition protected for safe installation in gasoline engine compartments
  • Tactile face textures enable operation by feel in low-light conditions
  • Compatible with Perko and Guest low-amperage switch mounting patterns
  • Surface or rear panel mounting options for flexible installation
  • Includes snap-out isolator covers and identification labels

Technical Specifications:

  • Maximum Voltage: 32V DC
  • Continuous Rating: 350A per circuit
  • Intermittent Rating: 525A (5 minutes)
  • Cranking Rating: 700A (30 seconds)
  • Terminal Stud Size: 3/8" x 7/8" long
  • Recommended Cable Size: 4/0 AWG for rated capacity
  • Mounting Holes: Four 1/4" diameter
  • Dimensions: 3-5/8" diameter x 2-5/8" depth
  • Certifications: UL 1107, UL 1500, SAE J1171, ABYC compliant

UL Listed for safety and reliability, this switch meets stringent ABYC battery switch standards. The one-piece cast copper studs handle high torque loads required for secure, low-resistance connections. Ideal for use with Automatic Charging Relays to create a simplified, automated battery management system. Backed by Blue Sea Systems lifetime warranty.

Products specifications

Amperage

350 Amps per circuit

Dimensions

3 7/8" Length x 3 7/8" Width x 3" Height

Type

On/Off Switches

Voltage

32 Volts

Cold Cranking Amps

1000 Amps

ISO Approved

UL Listed. Meets UL 1500SAE J1171CE

Warranty Details

Lifetime

Out standing Guys!!

thank you for the order

only a few online u.s. vendors will ship to Canada,well done!

It was easy too shop and purchase

fine

need more info on page for parts like what engine is in your car other then that everything was great

It was fine.

All seems great. Had item in stock as on there website and it was shipped quickly.

Good so far.

quick and easy checkout

I found what I wanted easily and the process was quick and easy.

It was helpful and I could navigate easy . Good parts , crazy shipping prices but it's german cars and I got it fast so no complaints here.

Communication was acceptable and shipping times within initial promise. Would and will buy from them again...

Great prices, quick processing, and an overall excellent company

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