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 7064 ATO/ATC-Style Low Profile Circuit Breaker - 2-Pack - 10 Amp [7064] Blue Sea 7064 ATO/ATC-Style Low Profile Circuit Breaker - 2-Pack - 10 Amp [7064]
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  • Blue Sea 7063 ATO/ATC-Style Low Profile Circuit Breaker - 2-Pack - 7.5 Amp [7063] Blue Sea 7063 ATO/ATC-Style Low Profile Circuit Breaker - 2-Pack - 7.5 Amp [7063]
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  • Blue Sea 7062 ATO/ATC-Style Low Profile Circuit Breaker - 2-Pack - 5 Amp [7062] Blue Sea 7062 ATO/ATC-Style Low Profile Circuit Breaker - 2-Pack - 5 Amp [7062]
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  • Blue Sea Stud Mount Insulating Booths - 2-Pack - Red [4000] Blue Sea Stud Mount Insulating Booths - 2-Pack - Red [4000]
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  • Blue Sea 7312 COTS Military Grade A-Series 15 Amp [7312] Blue Sea 7312 COTS Military Grade A-Series 15 Amp [7312]
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  • Blue Sea 4367 Water Resistant USB Accessory Panel - 15A Circuit Breaker, 3x Blank Apertures [4367] Blue Sea 4367 Water Resistant USB Accessory Panel - 15A Circuit Breaker, 3x Blank Apertures [4367]
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  • Blue Sea 4366 Water Resistant USB Accessory Panel - Circuit Breaker, 12V Socket, Dual USB Charger, Mini Voltmeter [4366] Blue Sea 4366 Water Resistant USB Accessory Panel - Circuit Breaker, 12V Socket, Dual USB Charger, Mini Voltmeter [4366]
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  • Blue Sea 4364 Water Resistant USB Accessory Panel - 15A Circuit Breaker, 2x Blank Apertures [4364] Blue Sea 4364 Water Resistant USB Accessory Panel - 15A Circuit Breaker, 2x Blank Apertures [4364]
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  • Blue Sea 4363 Water Resistant USB Accessory Panels - 15A Circuit Breaker, 12V Socket, 2.1A Dual USB Charger [4363] Blue Sea 4363 Water Resistant USB Accessory Panels - 15A Circuit Breaker, 12V Socket, 2.1A Dual USB Charger [4363]
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  • Blue Sea Contura Switch DPDT Black - ON-ON [8300] Blue Sea Contura Switch DPDT Black - ON-ON [8300]
    Blue Sea Contura Switch DPDT Black - ON-ON [8300]
    Blue Sea Contura Switch DPDT Black - ON-ON [8300]
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    $23.79
    Regular price
    $28.99
    Sale price
    $23.79
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  • Blue Sea 7870 Black 180 Label Set - Emergency Vehicles [7870] Blue Sea 7870 Black 180 Label Set - Emergency Vehicles [7870]
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  • Blue Sea 7459 UL-489 Circuit Breaker - 50A Flat Rocker [7459] Blue Sea 7459 UL-489 Circuit Breaker - 50A Flat Rocker [7459]
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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.