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 7717 ML-RBS Remote Battery Switch w/Manual Control Auto-Release - 24V [7717] Blue Sea 7717 ML-RBS Remote Battery Switch w/Manual Control Auto-Release - 24V [7717]
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  • Blue Sea 7713 ML-RBS Remote Battery Switch w/Manual Control Release - 12V [7713] Blue Sea 7713 ML-RBS Remote Battery Switch w/Manual Control Release - 12V [7713]
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  • Blue Sea 7945 Contura III Switch SPDT - (ON)-OFF-ON - Black [7945] Blue Sea 7945 Contura III Switch SPDT - (ON)-OFF-ON - Black [7945]
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  • Blue Sea 7944 Contura III Switch SPDT - (ON)-OFF-ON - Gray [7944] Blue Sea 7944 Contura III Switch SPDT - (ON)-OFF-ON - Gray [7944]
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  • Blue Sea 7943 Contura II Switch SPDT - (ON)-OFF-ON - Black [7943] Blue Sea 7943 Contura II Switch SPDT - (ON)-OFF-ON - Black [7943]
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  • Blue Sea 7650003 Add-A-Battery Kit - Boxed Packaging [7650003]
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  • Blue Sea 7649 Mini Add-A-Battery Kit - Boxed Packaging [7649003]
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  • Blue Sea 3119 SMS Surface Mount System Panel Enclosure - 120/240V AC / 50A ELCI Main - 1 Blank Circuit Position [3119]
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  • Blue Sea 7520 P12 LED Remote f/Battery Chargers [7520]
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  • Blue Sea 4309 WeatherDeck 12V DC Waterproof Switch Panel - 8 Position [4309] Blue Sea 4309 WeatherDeck 12V DC Waterproof Switch Panel - 8 Position [4309]
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  • Blue Sea 4307 WeatherDeck 12V DC Waterproof Switch Panel - 6 Position [4307]
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  • Blue Sea 4305 WeatherDeck 12V DC Waterproof Switch Panel - 4 Posistion [4305]
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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.