My Account
Shopping Cart

Blue Sea Systems 6004 Mini Battery Switch On/Off with Locking Key Red

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

6004
06/03/2036 7:58 AM
Sale Price

$26.67

In Stock (10+)

delivery box

Usually delivered within 2 days

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Blue Sea Systems 6004 is a single circuit ON/OFF battery switch with locking key, designed for outboards and small gasoline or diesel engines. This compact marine-grade switch features a red finish and provides secure battery isolation with key-operated control to prevent unauthorized use.

Key Features:

  • 300 amp continuous rating, 500A intermittent, 900A cranking rating (30 seconds)
  • Tin-plated copper studs for maximum conductivity and corrosion resistance
  • One-piece terminal stud design that never loosens over time
  • 3/8" (M10) stud size with 7/8" (22mm) length accepts multiple cable terminals
  • One-piece stainless steel flange nuts ensure safe and secure connections
  • Isolating cover protects rear contacts from accidental contact
  • Breakout tabs allow wire access in any direction for flexible installation
  • Locking key prevents unauthorized battery activation

Specifications:

  • Switch Type: Single Circuit ON-OFF
  • Color: Red
  • Maximum Voltage: 48V DC
  • Continuous Rating: 300A
  • Intermittent Rating: 500A
  • Cranking Rating (30 sec): 900A

Ideal for marine applications requiring reliable battery disconnect capability with security features. Built to Blue Sea Systems' exacting standards for marine electrical components.

Products specifications

Amperage

300 Amps

Dimensions

3.88" x 6.63" x 3"

Type

Lockable On Off Switches

Voltage

48 Volts DC

Cold Cranking Amps

900 Amps (30 Seconds)

ISO Approved

IP 66ISO 8846 MarincSAE J1171 MarineUL 1077UL 1500

Warranty Details

Lifetime

so far so good

Found what I was looking for from the comfort of my living room how easy can it be

easy transaction on a hard to find part.

easy to use

Great

Thank you for the shipping coupon. Your prices are great too.

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy