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 7411 A-Series Flat Rocker Circuit Breaker - Double Pole - 15A [7411]
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  • Blue Sea 7410 A-Series Flat Rocker Circuit Breaker - Double Pole - 10A [7410]
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  • Blue Sea 1525 360 Panel - M2 Monitor Panel Blank [1525]
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  • Blue Sea 1331 AC Insulating Cover f/1 Module [1331] Blue Sea 1331 AC Insulating Cover f/1 Module [1331]
    Blue Sea 1331 AC Insulating Cover f/1 Module [1331]
    Blue Sea 1331 AC Insulating Cover f/1 Module [1331]
    Regular price
    $32.79
    Regular price
    $50.99
    Sale price
    $32.79
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  • Blue Sea 3117 - SMS Panel Enclosure w/2 ELCI (30A) - 120V AC [3117]
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  • Blue Sea 3125 Medium Cable Gland -
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  • Blue Sea 5006100 MAXI Fuse Block - 30-80A [5006100]
    Blue Sea 5006100 MAXI Fuse Block - 30-80A [5006100]
    Blue Sea 5006100 MAXI Fuse Block - 30-80A [5006100]
    Regular price
    $37.79
    Regular price
    $43.99
    Sale price
    $37.79
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  • Blue Sea 7903200 Battery Switch Key Lock Replacement - Black [7903200] Blue Sea 7903200 Battery Switch Key Lock Replacement - Black [7903200]
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  • Blue Sea 7903 Battery Switch Key Lock Replacement - Red [7903] Blue Sea 7903 Battery Switch Key Lock Replacement - Red [7903]
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  • Blue Sea 7615 ATD Automatic Timer Disconnect [7615] Blue Sea 7615 ATD Automatic Timer Disconnect [7615]
    Blue Sea 7615 ATD Automatic Timer Disconnect [7615]
    Blue Sea 7615 ATD Automatic Timer Disconnect [7615]
    Regular price
    $120.79
    Regular price
    $164.99
    Sale price
    $120.79
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  • Blue Sea 7517 P12 Battery Charger Display [7517] Blue Sea 7517 P12 Battery Charger Display [7517]
    Blue Sea 7517 P12 Battery Charger Display [7517]
    Blue Sea 7517 P12 Battery Charger Display [7517]
    Regular price
    $240.79
    Regular price
    $269.99
    Sale price
    $240.79
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  • Blue Sea 7399 A-Series Flat Rocker Circuit Breaker - Single Pole - 2.5A [7399]
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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.