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Blue Sea Systems 7620BSS ML-Series 12V Automatic Charging Relay 500A

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

7620BSS
06/01/2036 8:11 AM
Sale Price

$256.18

1 left at this price

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Usually delivered within 2 days

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No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Blue Sea Systems 7620BSS ML-Series Automatic Charging Relay (ACR) is a high-capacity, intelligent battery management solution designed for marine, RV, and dual-battery applications. This magnetic latching solenoid automatically combines battery banks during charging and isolates them when charging sources are inactive, ensuring optimal battery performance and preventing discharge.

Key Features:

  • 500-amp magnetic latching solenoid for reliable, high-current switching
  • 12-volt DC operation with automatic charge detection
  • 120-amp continuous duty rating with 210-amp intermittent capacity
  • Silver alloy contacts for superior conductivity and corrosion resistance
  • 3/8-inch-16 threaded studs for secure cable connections
  • Tinned wire control circuit connections resist corrosion in marine environments
  • Compatible with Contura switch for manual override control
  • 20 AWG control wire connections for easy installation
  • Magnetic latching design reduces power consumption and heat generation

The ML-Series ACR eliminates the need for battery isolators and their associated voltage drops, allowing alternators and charging sources to operate at peak efficiency. The intelligent charging logic automatically combines batteries when charging voltage is detected and separates them when the engine stops, protecting your starting battery from auxiliary loads. Ideal for boats, RVs, emergency vehicles, and any application requiring intelligent dual-battery management.

in-stock, quick and easy checkout.

Great Experience. Actually order 1 more to complete my set

Prices, quality of parts and service have been great

Real good price what I can say

Great prices

Excellent service! The only thing I wondered about was if a gasket was supposed to be included with the part.

THMotorsports is a preferred vendor for all my parts orders. Over the years they have provided me unrivaled customer service, and in doing so, earned my business for a lifetime.

Great service, there were no issues

quick and easy transaction. best prices on the entire net!!

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