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 9159 m-Series Battery Switch Paralleling Link Bus 2-Pack [9159] Blue Sea 9159 m-Series Battery Switch Paralleling Link Bus 2-Pack [9159]
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  • Blue Sea 7702 ML-Series Remote Battery Switch w/Manual Control 24V DC [7702] Blue Sea 7702 ML-Series Remote Battery Switch w/Manual Control 24V DC [7702]
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  • Blue Sea 7701 ML-Series Solenoid w/Contura Switch 12VDC [7701]
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  • Blue Sea  7700 ML-Series Remote Battery Switch w/Manual Control 12VDC [7700] Blue Sea  7700 ML-Series Remote Battery Switch w/Manual Control 12VDC [7700]
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  • Blue Sea 7620 ML-Series Automatic Charging Relay (Magnetic Latch) 12VDC [7620]
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  • Blue Sea 5191 Terminal Fuse Block 30-300AMP [5191]
    Blue Sea 5191 Terminal Fuse Block 30-300AMP [5191]
    Blue Sea 5191 Terminal Fuse Block 30-300AMP [5191]
    Regular price
    $32.79
    Regular price
    $37.99
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    $32.79
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  • Blue Sea 5190 300A Fuse Terminal [5190]
    Blue Sea 5190 300A Fuse Terminal [5190]
    Blue Sea 5190 300A Fuse Terminal [5190]
    Regular price
    $19.79
    Regular price
    $22.99
    Sale price
    $19.79
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  • Blue Sea 5189 250A Fuse Terminal [5189]
    Blue Sea 5189 250A Fuse Terminal [5189]
    Blue Sea 5189 250A Fuse Terminal [5189]
    Regular price
    $19.79
    Regular price
    $22.99
    Sale price
    $19.79
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  • Blue Sea 5187 200A Fuse Terminal [5187]
    Blue Sea 5187 200A Fuse Terminal [5187]
    Blue Sea 5187 200A Fuse Terminal [5187]
    Regular price
    $32.89
    Regular price
    $32.89
    Sale price
    $32.89
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  • Blue Sea 5186 175A Fuse Terminal [5186]
    Blue Sea 5186 175A Fuse Terminal [5186]
    Blue Sea 5186 175A Fuse Terminal [5186]
    Regular price
    $19.79
    Regular price
    $22.99
    Sale price
    $19.79
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  • Blue Sea 5185 150A Fuse Terminal [5185]
    Blue Sea 5185 150A Fuse Terminal [5185]
    Blue Sea 5185 150A Fuse Terminal [5185]
    Regular price
    $19.79
    Regular price
    $22.99
    Sale price
    $19.79
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  • Blue Sea 5184 125A Fuse Terminal [5184]
    Blue Sea 5184 125A Fuse Terminal [5184]
    Blue Sea 5184 125A Fuse Terminal [5184]
    Regular price
    $19.79
    Regular price
    $22.99
    Sale price
    $19.79
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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.