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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Sort by:
- Featured
- Most relevant
- Best selling
- Alphabetically, A-Z
- Alphabetically, Z-A
- Price, low to high
- Price, high to low
- Date, old to new
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Vendor:Blue Sea Systems
Blue Sea 5503 ANL 750 Fuse Block w/ Cover [5503]
- £38.21
£51.69- £38.21
- Unit price
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5503 Cover included Accepts 5/16" (M8) ring terminals For use on systems up to 32 Volts DC Swing out design allows replacement of the fuse without removing fasteners Stainless steel studs provide resistance to corrosion and high torquing for excellent electrical contact UL 94-V0...- £38.21
£51.69- £38.21
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Vendor:Blue Sea Systems
Blue Sea 2201 Black Terminal Feed Through Connector [2201]
- £16.48
£23.97- £16.48
- Unit price
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Terminal Feed Through ConnectorsEliminates chage and provides strain relief when passing high current through hulls, decks and bulkheads.Features: Perfect for passing high current cables through hulls, decks and bulkheads Large cables passed through holes are subject to chafing even when protective grommeting is used....- £16.48
£23.97- £16.48
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Vendor:Blue Sea Systems
Blue Sea 2107 PowerBar 600AMP Cable Connector - 8 x 3/8" 16 Stud Terminal [2107]
- £112.39
£163.34- £112.39
- 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...- £112.39
£163.34- £112.39
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Vendor:Blue Sea Systems
Blue Sea PowerBar 1000 - 8 3/8" Terminal Studs w/Cover [1990]
- £121.38
£176.83- £121.38
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PowerBar 1000 - 8 3/8" Terminal Studs w/CoverComplex wiring systems require a single point to consolidate large and small conductors. The PowerBar 1000 offers a 1,000 Amp busbar with various size studs and screws to connect conductors and fuse blocks.Features: 1,000 Amp busbar for...- £121.38
£176.83- £121.38
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Vendor:Blue Sea Systems
Blue Sea 4012 CableCap - Red 0.50 Stud [4012]
- £3.74
£5.24- £3.74
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4012 CableCap - Red 0.50 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 other reproductive...- £3.74
£5.24- £3.74
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Vendor:Blue Sea Systems
Blue Sea 2104 PowerBar 600AMP Cable Connector 4 x 3/8 16 Stud Terminal [2104]
- £80.92
£118.38- £80.92
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2104 PowerBar 600AMP Cable Connector 4 x 3/8 16 Stud TerminalSpecifications: Max Voltage: 300 V AC/48 V DC Number of Terminal Studs: 4 Terminal Type: 3/8" - 16 Stud WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to...- £80.92
£118.38- £80.92
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Vendor:Blue Sea Systems
Blue Sea 2002 PowerPost High Amperage Cable Connector 5/16" Stud [2002]
- £9.73
£13.48- £9.73
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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...- £9.73
£13.48- £9.73
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Vendor:Bluewater
Bluewater 12 Position Male Sealed Deutsch Connector Busbar - 5/16" Stud [2314-D-056]
- £15.89
£0.00- £15.89
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12 Position Male Sealed Deutsch Connector Busbar - 5/16" StudThis waterproof busbar is designed for Deutsch-style DT connectors and built to resist moisture, corrosion, and vibration. With its rugged housing and sealed construction, it’s ideal for marine, off-road, and industrial power distribution where reliability...- £15.89
£0.00- £15.89
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Vendor:Blue Sea Systems
Blue Sea 2719 Maxibus Cover f/2127 & 2128 [2719]
- £19.47
£28.47- £19.47
- Unit price
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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)- £19.47
£28.47- £19.47
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Vendor:Blue Sea Systems
Blue Sea 2127 Maxibus 4 x 516-18 Stud Common [2127]
- £42.70
£62.19- £42.70
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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...- £42.70
£62.19- £42.70
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Vendor:Blue Sea Systems
Blue Sea 2404 Terminal Black 20AMP - 4 Circuit [2404]
- £4.49
£5.99- £4.49
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2404 Terminal Black 20AMP - 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...- £4.49
£5.99- £4.49
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Vendor:Bluewater
Bluewater 2 Position Bus/Base - Only 10mm [312311-B-020]
- £7.30
£0.00- £7.30
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2 Position Bus/Base - Only 10mmThis heavy-duty dual stud busbar features two 3/8” studs for high-current connections. It supports large cable lugs and is ideal for linking batteries, power inverters, or distribution panels.The corrosion-resistant construction ensures long-lasting performance in harsh marine or off-road environments. This busbar offers a...- £7.30
£0.00- £7.30
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Vendor:Bluewater
Bluewater Dual 12 Position Male Sealed Deutsch Connector Busbar - 5/16" Stud [2314-D-256]
- £41.21
£0.00- £41.21
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Dual 12 Position Male Sealed Deutsch Connector Busbar - 5/16" StudThis sealed dual-input busbar features 12 positions for Deutsch DT connectors, offering secure, waterproof connections for complex systems.Ideal for combining protected inputs and outputs in one unit, this dual DT busbar simplifies wiring in...- £41.21
£0.00- £41.21
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Vendor:Bluewater
Bluewater 5/16" Power Post - Black [314300-B-516]
- £4.98
£0.00- £4.98
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5/16" Power Post - BlackThis power post features a 5/16” stud for secure, high-current cable connections. It’s ideal for smaller power runs or ground returns where space and reliability are key. The 5/16 power post is made from corrosion-resistant materials, ensuring long-lasting durability in...- £4.98
£0.00- £4.98
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Vendor:BEP Marine
BEP Pro Installer Link Joiner 5-Way [779-LBJ-5]
- £14.23
£21.00- £14.23
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Pro Installer Link Joiner 5-WayThis tin-plated bus bar can be used to link 5 adjacent DC products together. The rating varies from 400-650 Amps, depending on how this busbar is wired. Made from tin-plated high-purity copper, this bar is intended for use with the...- £14.23
£21.00- £14.23
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Vendor:Blue Sea Systems
Blue Sea 2128 Maxibus 6 x #10-24(Screws) w/2 x 516"(Studs) [2128]
- £34.46
£50.20- £34.46
- Unit price
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2 x 5⁄16"- 18 Stud Terminal6 x#10-24 Terminal Screws Part# 2128 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...- £34.46
£50.20- £34.46
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Vendor:Blue Sea Systems
Blue Sea 2202 Red Terminal Feed Through Connectors [2202]
- £16.48
£23.97- £16.48
- Unit price
- / per
Terminal Feed Through ConnectorsEliminates chage and provides strain relief when passing high current through hulls, decks and bulkheads.Features: Perfect for passing high current cables through hulls, decks and bulkheads Large cables passed through holes are subject to chafing even when protective grommeting is used....- £16.48
£23.97- £16.48
- Unit price
- / per
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Vendor:Bluewater
Bluewater 3/8" Dual Stud Busbar Copper Link [312311-A-024]
- £12.45
£0.00- £12.45
- Unit price
- / per
3/8" Dual Stud Busbar Copper LinkThis Dual Stud Busbar features an integrated copper link that connects both studs for continuous conductivity and efficient current distribution. Engineered for high performance, it minimizes resistance while maintaining durability in demanding electrical systems. Ideal for marine and industrial...- £12.45
£0.00- £12.45
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Vendor:Egis Mobile Electric
Egis MaxiBus - 6 5/16" Studs - 250 AMP [6250-600]
- £23.97
£53.20- £23.97
- Unit price
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MaxiBus - 6 5/16" Studs - 250 AMPThe Egis Mobile Electric 6250-600 is a 250A-rated MaxiBus power distribution block featuring six 5/16" (M8) studs, designed for securing high-current electrical connections. Suitable for harsh environments, this unit is ideal for marine or vehicle applications. It...- £23.97
£53.20- £23.97
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Vendor:Newmar Power
Newmar BB-2/8 Bus Bar [BB-2/8]
- £80.92
£92.16- £80.92
- Unit price
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BB-2/8 Bus BarIdeal as a DC ground tie point or positive bus, this heavy-duty, 500-amp-rated bus bar assembly features 5/16 in. studs on 1 in. centers in 1/4 in. thick copper bar for common connection or distribution of large wire gauges.Features: Accommodate 5/16" ring...- £80.92
£92.16- £80.92
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![Blue Sea 5503 ANL 750 Fuse Block w/ Cover [5503]](http://www.dbmarinesupplies.com/cdn/shop/files/34963XL_533x.jpg?v=1682649580)
![Blue Sea PowerBar 1000 - 8 3/8" Terminal Studs w/Cover [1990]](http://www.dbmarinesupplies.com/cdn/shop/files/54613XL_533x.jpg?v=1682679678)
![Blue Sea 2104 PowerBar 600AMP Cable Connector 4 x 3/8 16 Stud Terminal [2104]](http://www.dbmarinesupplies.com/cdn/shop/files/13953XL_533x.jpg?v=1682634045)
![Blue Sea 2719 Maxibus Cover f/2127 & 2128 [2719]](http://www.dbmarinesupplies.com/cdn/shop/files/42723XL_533x.jpg?v=1682658423)
![Egis MaxiBus - 6 5/16" Studs - 250 AMP [6250-600]](http://www.dbmarinesupplies.com/cdn/shop/files/113322XL_533x.jpg?v=1775599554)