Blue Sea Systems offers a comprehensive range of high-quality marine electrical products. Their products include fuse panels, terminal fuses, distribution blocks, battery management systems, switches, circuit protection, and more. These products are designed to enhance the safety, reliability, and efficiency of electrical systems on boats and yachts. Blue Sea Systems' fuse panels and distribution blocks help organize and protect wiring, while their battery management solutions ensure proper power distribution and control. Their switches, voltmeters, and other components provide easy monitoring and control of onboard electrical systems. Overall, Blue Sea Systems' products contribute to the smooth operation and safety of marine electrical systems.
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1-2 weeks delivery time The Blue Sea 2715 is an insulating protective cover designed for Common 150A BusBars PN 2301 and 2303, with a weight of 0.08 lb (0.04 kg).
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$ 7.01
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1-2 weeks delivery time The Blue Sea 2716 is an insulating protective cover designed for the Common 150A BusBar – 20 Gang (PN 2302), with a weight of 0.13 lb (0.06 kg).
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$ 11.93
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1-2 weeks delivery time The Blue Sea 2718 is an insulating cover made from reinforced nylon with a polycarbonate cover, designed to meet ABYC insulation requirements, with a weight of 1.00 lb (0.45 kg), compatible with MaxiBus 250A busbars (PN 2105 and 2126) and selected PowerBar, DualBus, and PowerPost products.
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$ 60.92
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1-2 weeks delivery time The Blue Sea 2719 is an insulating cover with cable breakouts designed to meet ABYC insulation requirements, with a weight of 1.00 lb (0.45 kg), compatible with MaxiBus 250A BusBars (PN 2127 and 2128) and a range of Dual PowerPost, DualBus, PowerBar Dual BusBars, Common BusBars, and 285-Series circuit breakers.
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$ 54.91
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1-2 weeks delivery time The Blue Sea 2722 is a DualBus Plus busbar combining positive and negative buses in a single block, rated for 150 A DC (130 A AC), supporting 300 V AC / 48 V DC, with 5 screw terminals and 2 stud terminals per bus, #10-32 screws, 1/4"-20 studs, and a clear polycarbonate snap-on cover.
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$ 51.64
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1-2 weeks delivery time The Blue Sea 2723 is a DualBus Plus busbar combining positive and negative buses in a single block, rated for 150 A DC (130 A AC), supporting 300 V AC / 48 V DC, with 5 screw terminals and 2 stud terminals per bus, #10-32 screws, 5/16"-18 studs, and a clear polycarbonate snap-on cover.
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$ 58.27
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1-2 weeks delivery time The 285 - 70A Flush-Mounting Circuit Breaker is designed for reliable performance, featuring a thermally responsive bi-metal blade with a 70A amperage and a maximum voltage of 48V DC. It is panel-mounted and has an interrupt capacity of 3000A at 48V, with operational temperatures ranging from -40°C to 85°C. This Type III circuit breaker offers switchable/manual reset capabilities and accepts M6 terminal studs with a torque rating of 50 in-lb. Weighing just 0.50 lb, it is ideal for various applications and is manufactured by Blue Sea.
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$ 81.68
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1-2 weeks delivery time The 285-Series 100A Built-In Circuit Breaker is a reliable drop-in replacement for the 185-Series, featuring a visible reset lever, ignition protection for gasoline-powered boats, and compliance with SAE J1171 standards. Its weather-resistant design combines switching and circuit breaker functions in one unit, with a "Trip Free" feature that prevents it from being held closed after a trip.
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$ 81.68
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1-2 weeks delivery time The Blue Sea 3000 is a heavy-duty single-circuit ON/OFF battery switch rated for 500 A continuous, 900 A intermittent (5 min), and 1750 A cranking (30 s), supporting 32 V DC, with 1/2" (M12) terminal studs, accepting two 4/0 AWG (120 mm²) cables, and providing IP66 ignition-protected operation.
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$ 168.48
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Blue Sea 3001 – HD-Series Heavy Duty Battery Switch with AFD, Single Circuit ON/OFF, 500A Continuous
1-2 weeks delivery time The Blue Sea 3001 is a heavy-duty single-circuit ON/OFF battery switch with AFD (Alternator Field Disconnect), rated for 500 A continuous, 900 A intermittent (5 min), and 1750 A cranking (30 s), supporting 32 V DC, with 1/2" (M12) terminal studs, accepting two 4/0 AWG (120 mm²) cables, and providing IP66 ignition-protected operation.
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$ 192.51
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1-2 weeks delivery time The Blue Sea 3002 HD-Series Heavy Duty Selector Battery Switch is a 4-position selector switch designed to manage two isolated battery banks, allowing selection or combination of battery banks to all loads. It features a make-before-break contact design for uninterrupted power switching, supports up to 400A continuous current at 32V DC, and accepts 4/0 AWG (120 mm²) battery cables. The switch is ignition protected, IP66 rated, and suitable for surface or rear panel mounting on gasoline-powered boats.
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$ 175.50
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1-2 weeks delivery time The Blue Sea 3003 HD-Series Selector Battery Switch is a 4-position heavy-duty battery switch with integrated Alternator Field Disconnect (AFD) for two battery banks. Rated 400A continuous, 700A intermittent (5 min), 1600A cranking (30 s) at 32V DC, it features make-before-break contacts, battery combine function, and supports 4/0 AWG (120 mm²) cables. Ignition protected, IP66 rated, suitable for surface or rear panel mounting.
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$ 200.78
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1-2 weeks delivery time The Blue Sea 3091 C-Series ELCI Circuit Breaker is a double-pole 230VAC / 16A main breaker with 30 mA ground leakage trip, providing protection against short circuit, overload, and ground fault. Magnetic hydraulic, trip-free design with 5000A interrupt capacity, flat rocker actuator, ignition protected, and front panel mount for AC distribution panels.
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Our managers will contact you and clarify the terms of the order
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1-2 weeks delivery time The Blue Sea 4000 Stud Mount Insulating Boots are press-fit red insulating covers for 5/16" (M8) and 3/8" (M10) posts and studs, designed to quickly insulate conductive connections. Suitable for use with insulated ring terminals and lugs only on battery switches, bus bars, solenoids, ACRs, and power posts.
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$ 5.47
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1-2 weeks delivery time The Blue Sea 4003 Dual Entry Cable Cap is a red insulating cable cap designed to protect electrical connections from accidental short circuits, supporting dual cable entry up to 2/0 AWG. Features a top lid for quick access to the connection point.
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Our managers will contact you and clarify the terms of the order
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1-2 weeks delivery time The Blue Sea 4005 Standard Cable Caps are PVC insulating caps supplied as a small pair, designed to insulate battery terminals with marine adapter terminals installed. Suitable for 1, 2, and 4 AWG cables, providing protection against accidental short circuits.
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$ 9.61
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1-2 weeks delivery time The Blue Sea 4006 Standard Cable Caps are PVC insulating caps supplied as a large pair, designed to insulate battery terminals with marine adapter terminals installed. Suitable for 1/0 and 2/0 AWG cables, providing protection against accidental short circuits.
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$ 9.61
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1-2 weeks delivery time The Blue Sea 4010 CableCap is a red PVC insulating cap designed to insulate single studs on alternators, starters, windlasses, and other high-amperage termination points, supporting medium-gauge cables (4–8 AWG).
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$ 5.30
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1-2 weeks delivery time The Blue Sea 4011 CableCap is a black PVC insulating cap designed to insulate single studs on alternators, starters, windlasses, and other high-amperage termination points, supporting medium-gauge cables (4–8 AWG).
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$ 5.30
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1-2 weeks delivery time The Blue Sea 4012 CableCap is a red PVC insulating cap designed to insulate single 0.50" studs on alternators, starters, windlasses, and other high-amperage termination points, supporting large-gauge cables (1–2 AWG and 1/0–2/0 AWG).
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$ 6.64
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What are the key components and features of a Blue Sea Systems add-a-battery dual circuit system, and how does it contribute to effective battery management on boats?
A Blue Sea Systems add-a-battery dual circuit system is a comprehensive solution designed for efficient battery management on boats and yachts. It includes key components such as an Automatic Charging Relay (ACR), distribution blocks, switches, fuses, and terminal blocks. The system allows seamless switching between battery banks, prioritizing charging and isolating them when necessary. This setup optimizes power distribution, prevents battery drain, and ensures reliable starting power. The dual circuit system is a fundamental tool in maintaining electrical integrity and uninterrupted power supply on marine vessels.
By integrating a Blue Sea Battery Switch, users gain a reliable and safe method to manually control power flow between battery banks. This switch is built to marine-grade standards, ensuring long-term durability in harsh environments.
How does a Blue Sea Systems SI-ACR (Automatic Charging Relay) function, and what benefits does it offer for maintaining optimal battery charging and isolation?
The Blue Sea Systems SI-ACR (Automatic Charging Relay) is a key component in advanced Marine Wiring systems, designed to simplify and optimize the management of multiple battery banks on boats and yachts. It functions by automatically connecting battery banks during charging—when voltage exceeds a preset threshold—and isolating them when charging stops or voltage drops.
For a complete power distribution and protection solution, pair the SI-ACR with a robust Blue Sea Fuse Block.
What is the purpose of a Blue Sea Systems MRBF (Terminal Fuse) and how is it utilized in marine electrical systems to ensure safety and protection?
The Blue Sea Systems MRBF (Terminal Fuse) is a crucial component in marine electrical systems designed to provide protection against overcurrent situations. It safeguards electrical circuits and equipment by interrupting the flow of current in the event of a fault or excessive current draw. These fuses are engineered to handle high current loads and are typically installed in close proximity to batteries, making them a critical element in systems that require high reliability and safety.
Often used alongside Blue Sea Add a Battery systems, MRBF fuses ensure consistent protection and help maintain the integrity of the overall electrical setup. Their compact design and high interrupt capacity make them ideal for marine environments, where space is limited and safety is paramount.
To further enhance electrical safety and efficiency, integrating a Blue Sea Terminal Block provides organized and secure connections, optimizing the performance and reliability of marine electrical installations.