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 8246 AC Analog Micro A [8246] Blue Sea 8246 AC Analog Micro A [8246]
    Blue Sea 8246 AC Analog Micro A [8246]
    Blue Sea 8246 AC Analog Micro A [8246]
    Regular price
    $78.79
    Regular price
    $106.99
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    $78.79
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  • Blue Sea 8245 AC Analog Micro Voltmeter - 2" Face, 0-250 Volts AC [8245] Blue Sea 8245 AC Analog Micro Voltmeter - 2" Face, 0-250 Volts AC [8245]
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  • Blue Sea 8244 AC Analog Micro Voltmeter - 2" Face, 0-150 Volts AC [8244] Blue Sea 8244 AC Analog Micro Voltmeter - 2" Face, 0-150 Volts AC [8244]
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  • Blue Sea 8242 Shunt Adapter for DC Digital Ammeter [8242]
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  • Blue Sea 8240 DC Analog Voltmeter - 2-3/4" Face, 18-32 Volts DC [8240] Blue Sea 8240 DC Analog Voltmeter - 2-3/4" Face, 18-32 Volts DC [8240]
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  • Blue Sea 8239 AC Digital Frequency Meter [8239] Blue Sea 8239 AC Digital Frequency Meter [8239]
    Blue Sea 8239 AC Digital Frequency Meter [8239]
    Blue Sea 8239 AC Digital Frequency Meter [8239]
    Regular price
    $226.79
    Regular price
    $310.99
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    $226.79
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  • Blue Sea 8238 AC Digital Ammeter [8238] Blue Sea 8238 AC Digital Ammeter [8238]
    Blue Sea 8238 AC Digital Ammeter [8238]
    Blue Sea 8238 AC Digital Ammeter [8238]
    Regular price
    $276.79
    Regular price
    $378.99
    Sale price
    $276.79
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  • Blue Sea 8237 AC Digital Voltmeter [8237] Blue Sea 8237 AC Digital Voltmeter [8237]
    Blue Sea 8237 AC Digital Voltmeter [8237]
    Blue Sea 8237 AC Digital Voltmeter [8237]
    Regular price
    $226.79
    Regular price
    $310.99
    Sale price
    $226.79
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  • Blue Sea 8236 DC Digital Ammeter [8236] Blue Sea 8236 DC Digital Ammeter [8236]
    Blue Sea 8236 DC Digital Ammeter [8236]
    Blue Sea 8236 DC Digital Ammeter [8236]
    Regular price
    $226.79
    Regular price
    $310.99
    Sale price
    $226.79
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  • Blue Sea 8235 DC Digital Voltmeter [8235] Blue Sea 8235 DC Digital Voltmeter [8235]
    Blue Sea 8235 DC Digital Voltmeter [8235]
    Blue Sea 8235 DC Digital Voltmeter [8235]
    Regular price
    $191.79
    Regular price
    $261.99
    Sale price
    $191.79
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  • Blue Sea 8231 Water Resistant Contura III Switch - Gray [8231] Blue Sea 8231 Water Resistant Contura III Switch - Gray [8231]
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  • Blue Sea 8230 Water Resistant Contura III Switch - Gray [8230] Blue Sea 8230 Water Resistant Contura III Switch - Gray [8230]
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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.