Blue Sea Systems

Marine power, done right

Blue Sea Systems

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Dependable electrical for the water

Build a cleaner, safer onboard power system with marine-grade switches, protection, and distribution components that are made to work together.

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Blue Sea 2011 PowerPost Mini High Amperage Cable Connector - 1/4" Stud [2011] (Open Box)
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861 products

861 products

  • Blue Sea 1007 Side Entry CableClam [1007]
    Blue Sea 1007 Side Entry CableClam [1007]
    Blue Sea 1007 Side Entry CableClam [1007]
    Regular price
    $12.79
    Regular price
    $15.99
    Sale price
    $12.79
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  • Blue Sea CableClam w/Stainless Steel Dress Cap - 1.40" [1003100]
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  • Blue Sea CableClam w/Stainless Steel Dress Cap - 0.83" [1002100]
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  • Blue Sea CableClam w/Stainless Steel Dress Cap - 0.68" [1001100]
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  • Blue Sea 5068 MAXI In-Line Fuse Holder [5068]
    Blue Sea 5068 MAXI In-Line Fuse Holder [5068]
    Blue Sea 5068 MAXI In-Line Fuse Holder [5068]
    Regular price
    $32.79
    Regular price
    $37.99
    Sale price
    $32.79
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  • Blue Sea 5032 ST-Blade Split Bus Fuse Block [5032]
    Blue Sea 5032 ST-Blade Split Bus Fuse Block [5032]
    Blue Sea 5032 ST-Blade Split Bus Fuse Block [5032]
    Regular price
    $70.79
    Regular price
    $93.99
    Sale price
    $70.79
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  • Blue Sea 5024 ST-Blade Battery Terminal Mount Fuse Block Kit [5024] Blue Sea 5024 ST-Blade Battery Terminal Mount Fuse Block Kit [5024]
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  • Blue Sea 5023 ST-Blade Battery Terminal Mount Fuse Block [5023]
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  • Blue Sea 2340 Battery Terminal Mount BusBars [2340]
    Blue Sea 2340 Battery Terminal Mount BusBars [2340]
    Blue Sea 2340 Battery Terminal Mount BusBars [2340]
    Regular price
    $28.79
    Regular price
    $34.99
    Sale price
    $28.79
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  • Blue Sea 1838 M2 AC Multimeter [1838] Blue Sea 1838 M2 AC Multimeter [1838]
    Blue Sea 1838 M2 AC Multimeter [1838]
    Blue Sea 1838 M2 AC Multimeter [1838]
    Regular price
    $280.79
    Regular price
    $384.99
    Sale price
    $280.79
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  • Blue Sea 1837 M2 AC Voltmeter [1837] Blue Sea 1837 M2 AC Voltmeter [1837]
    Blue Sea 1837 M2 AC Voltmeter [1837]
    Blue Sea 1837 M2 AC Voltmeter [1837]
    Regular price
    $265.79
    Regular price
    $363.99
    Sale price
    $265.79
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  • Blue Sea 1836 M2 AC Ammeter [1836] Blue Sea 1836 M2 AC Ammeter [1836]
    Blue Sea 1836 M2 AC Ammeter [1836]
    Blue Sea 1836 M2 AC Ammeter [1836]
    Regular price
    $240.79
    Regular price
    $328.99
    Sale price
    $240.79
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About Blue Sea Systems

Blue Sea Systems builds marine-grade AC and DC electrical products designed to make boating safer and more reliable. Based in Bellingham, Washington, the brand is known for practical engineering that helps boaters and builders create clean, serviceable electrical systems that hold up in harsh conditions.

Their catalog covers the core building blocks of onboard power, including battery switches, automatic charging relays, fuse blocks, bus bars, circuit breakers, meters, and power distribution panels. Whether you are rigging a small skiff, upgrading a cruising sailboat, or wiring a specialty vehicle, Blue Sea components are made to work together as a complete system.

At Lotz Outdoors we stock Blue Sea Systems because dependable electrical is not optional on the water. If you are chasing a tidy install, easy troubleshooting, and confidence when the weather turns, this is the hardware that helps you get there.

Warranty

Satisfaction guarantee and product-specific warranty coverage

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Blue Sea Systems Customer Service

800-222-7617

For product-specific support, warranty claims, and technical questions, contact the brand directly.