Electrical - Busbars, Connectors & Insulators
Marine busbars, connectors, and insulators are essential components for creating safe, organized, and reliable electrical distribution systems onboard your vessel. Engineered for demanding freshwater and saltwater environments, these marine-grade components help manage power connections while providing secure conductivity, protection, and long-lasting performance. From positive and negative busbars, terminal blocks, power posts, cable connectors, distribution blocks, and insulated connection solutions to mounting hardware and protective covers, these products support efficient power distribution for batteries, marine electronics, lighting, pumps, and other onboard systems. Quality busbars and connectors help reduce wiring clutter, improve electrical organization, and provide dependable connections for critical equipment. Whether you're upgrading your boat's electrical system, completing a new installation, or improving power management, the right components help ensure safe and efficient operation on the water. Featuring premium products from trusted marine manufacturers, our Electrical – Busbars, Connectors & Insulators collection delivers the reliability and performance serious boaters expect. Browse our selection today and let our knowledgeable team help you choose the ideal electrical connection solutions for your vessel.
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- Featured
- Most relevant
- Best selling
- Alphabetically, A-Z
- Alphabetically, Z-A
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Vendor:Blue Sea Systems
Blue Sea 4014 CableCap - Red 1.25 to 0.70 [4014]
- $5.99
$7.99- $5.99
- Unit price
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4014 CableCap - Red 1.25 to 0.70Features:Insulate stud type connectors on alternators, starters, windlasses and other high amperage devicesWARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other...- $5.99
$7.99- $5.99
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Vendor:Blue Sea Systems
Blue Sea 2719 Maxibus Cover f/2127 & 2128 [2719]
- $25.99
$37.99- $25.99
- Unit price
- / per
Maxibus CoverPart# 2719Cover for 2127 & 2128WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. Quick Guide (pdf)- $25.99
$37.99- $25.99
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Vendor:Blue Sea Systems
Blue Sea 2017 Dual PowerPost Cable Connectors - 2 x 3/8" [2017]
- $19.99
$28.99- $19.99
- Unit price
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Dual PowerPost Connectors Designed for connecting high amp conductors Includes one black and one red insulator WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm....- $19.99
$28.99- $19.99
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Vendor:Blue Sea Systems
Blue Sea 2002 PowerPost High Amperage Cable Connector 5/16" Stud [2002]
- $12.99
$17.99- $12.99
- Unit price
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2002 PowerPost High Amperage Cable Connector 5/16" Stud Insulated single stainless steel stud terminates multiple large conductors.Features: Connects high amperage cables securely Stud dimensions: 5/16" x 7/8" Base Material is PBT UL94 V0 WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which...- $12.99
$17.99- $12.99
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Vendor:Blue Sea Systems
Blue Sea 2105 MaxiBus 250AMP Common BusBars 12 x #10 Terminal Screws [2105]
- $67.99
$98.99- $67.99
- Unit price
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2105 MaxiBus 250AMP Common BusBars 12 x #10 Terminal ScrewsBusbars are used to consolidate multiple wires or feed multiple circuits.Features: Insert molded stainless steel studs eliminate need for securing nut and allow high torquing for excellent electrical contact Raised bus provides easy access to...- $67.99
$98.99- $67.99
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Vendor:Blue Sea Systems
Blue Sea 4018 Square CableCap Insulators Pair Red/Black [4018]
- $7.99
$10.99- $7.99
- Unit price
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Square CableCap Insulators Pair Red/BlackSquare CableCap insulators - Cable size 1/0Pair: 1 Red/1 BlackWARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information...- $7.99
$10.99- $7.99
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Vendor:Blue Sea Systems
Blue Sea 4008 CableCap - Red 0.47 to 0.13 Stud [4008]
- $3.99
$4.99- $3.99
- Unit price
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4008 CableCap - Red 0.47 to 0.13 StudFeatures:Insulate stud type connectors on alternators, starters, windlasses and other high amperage devicesWARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or...- $3.99
$4.99- $3.99
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Vendor:Blue Sea Systems
Blue Sea 2722 DualBus Plus 1/4" Stud, 5 x 10-32 Screw Terminal [2722]
- $25.99
$37.99- $25.99
- Unit price
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2722 DualBus Plus 1/4" Stud, 5 x 10-32 Screw TerminalFeatures: Combines negative and positive buses on one block Clear polycarbonate cover snaps on to meet Coast Guard and ABYC insulation require WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is...- $25.99
$37.99- $25.99
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Vendor:Blue Sea Systems
Blue Sea 2107 PowerBar 600AMP Cable Connector - 8 x 3/8" 16 Stud Terminal [2107]
- $149.99
$217.99- $149.99
- Unit price
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2107 PowerBar 600AMP Cable Connector - 8 x 3/8" 16 Stud TerminalSpecifications: Maximum Voltage: 300 V AC/48V DC Number of Terminal Studs: 8 Terminal Type: 3/8" - 16 Stud WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to...- $149.99
$217.99- $149.99
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Vendor:Blue Sea Systems
Blue Sea 2127 Maxibus 4 x 516-18 Stud Common [2127]
- $56.99
$82.99- $56.99
- Unit price
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4 x 5⁄16- 18 Stud TerminalPart# 2127 SpecificationsContinuous Amperage 250 Amperes AC/DCVoltage Rating 300 Volts AC Maximum / 48 Volts DC MaximumBus Material Tin-Plated Copper CDA 110 / UNS 11000Base Material Reinforced PolycarbonateCover Material ABSCE Certified WARNING: This product can expose you to chemicals...- $56.99
$82.99- $56.99
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Vendor:Blue Sea Systems
Blue Sea 2151 Terminal Fuse Block - 3/8" Mounting Hole - 2 Terminal Studs [2151]
- $40.99
$55.99- $40.99
- Unit price
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2151Features: New isolated stud design uses standard 5/16" hardware and permits stacking of terminals Compact, high-amp fuse-Appropriate for DC Main, inverter, windlass, and bow thruster circuit protection Provides high current protection in tight space constraints Weatherproof-suitable for small open-cockpit boats and other harsh environments...- $40.99
$55.99- $40.99
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Vendor:Blue Sea Systems
Blue Sea 2604 Terminal Block 65AMP - 4 Circuit [2604]
- $12.99
$17.99- $12.99
- Unit price
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2604 Terminal Block 65AMP - 4 CircuitFeatures: Closed back design completely insulates power from the mounting surface Each screw pair is 1 isolated circuit Jumpers allow creation of common circuits WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known...- $12.99
$17.99- $12.99
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Vendor:Blue Sea Systems
Blue Sea 2512 Terminal Block 30AMP - 12 Circuit [2512]
- $15.99
$22.99- $15.99
- Unit price
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2512 Terminal Block 30AMP - 12 CircuitFeatures: Closed back design completely insulates power from the mounting surface Each screw pair is 1 isolated circuit Jumpers allow creation of common circuits WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known...- $15.99
$22.99- $15.99
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Vendor:Blue Sea Systems
Blue Sea 2606 Terminal Black 65AMP - 6 Circuit [2606]
- $20.99
$29.99- $20.99
- Unit price
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Terminal Block 65AMP - 6 CircuitFeatures: Closed back design completely insulates power from the mounting surface Each screw pair is 1 isolated circuit Jumpers allow creation of common circuits WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to...- $20.99
$29.99- $20.99
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Vendor:Blue Sea Systems
Blue Sea 2020 PowerBar Dual BusBar - Two 3/8"-16 Studs [2020]
- $15.99
$22.99- $15.99
- Unit price
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PowerBar Dual BusBar - Two 3/8"-16 StudsProvides compact high-ampere busing with 3/8" terminal studsSpecifications: Maximum Amperage: 200A Maximum Voltage: 48V DC Number of Terminal Studs: 2 Terminal Type: 3/8"-16 Stud Bus Material: Tin-Plated Copper CDA 110/UNS11000 Weight: 0.32lb (0.15 kg) WARNING: This product can...- $15.99
$22.99- $15.99
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Vendor:Blue Sea Systems
Blue Sea 2710 Cover f/DualBus 2702 [2710]
- $13.99
$19.99- $13.99
- Unit price
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2710 Cover for DualBus 2702Specifications: Length: 6-3/8" Height: 7/8" Width: 2-3/8" Weight: 0.04lb WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information...- $13.99
$19.99- $13.99
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Vendor:Blue Sea Systems
Blue Sea 2306 MiniBus 100AMP Common BusBar Grounding BusBar 6 x 8-32 Screw Terminal [2306]
- $8.99
$11.99- $8.99
- Unit price
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2306 MiniBus 100AMP Common BusBar Grounding BusBar 6 x 8-32 Screw TerminalFeatures:Great for limited space applications in electronics cabinets and under dashboardsWARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth...- $8.99
$11.99- $8.99
- Unit price
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Vendor:Blue Sea Systems
Blue Sea 2608 Terminal Block 65AMP - 8 Circuit [2608]
- $23.99
$33.99- $23.99
- Unit price
- / per
2608 Terminal Block 65AMP - 8 CircuitFeatures: Closed back design completely insulates power from the mounting surface Each screw pair is 1 isolated circuit Jumpers allow creation of common circuits WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known...- $23.99
$33.99- $23.99
- Unit price
- / per
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Vendor:Blue Sea Systems
Blue Sea 2010 PowerPost High Amperage Cable Connector #10 Stud [2010]
- $8.99
$11.99- $8.99
- Unit price
- / per
PowerPost High Amperage Cable Connector #10 StudFeatures: Insulated single stainless steel stud terminates multiple large conductors Connects high amperage cables securely Stud dimensions: #10-32 x 5/8" Base Material is PBT UL94 V0 WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which...- $8.99
$11.99- $8.99
- Unit price
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Vendor:Blue Sea Systems
Blue Sea 2003 PowerPost High Amperage Cable Connector 3/8" Stud [2003]
- $12.99
$17.99- $12.99
- Unit price
- / per
2003 PowerPost High Amperage Cable Connector 3/8" StudInsulated single stainless steel stud terminates multiple large conductors.Features: Connects high amperage cables securely Stud dimensions: 3/8" x 7/8" Base Material is PBT UL94 V0 WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which...- $12.99
$17.99- $12.99
- Unit price
- / per


![Blue Sea 2719 Maxibus Cover f/2127 & 2128 [2719]](http://www.dbmarinesupplies.com/cdn/shop/files/42723XL_533x.jpg?v=1682658423)