Blue Sea Systems Products: Precision and Reliability in Marine Electrical Components
Whether it's a surface-mounted power distribution panel or a common busbar, their products are designed with precision and reliability in mind. The A-series toggle switches, ANL and ATC fuses, ML-ACR and M-Series Mini relays, and specialty M2 OLED digital displays are just a few examples of their diverse product range catering to various marine needs.With features like ignition protection, high amperage capacity, and fast-charging capabilities, Blue Sea Systems ensures that their products meet the stringent requirements of specialty vehicle industries and marine applications. Their commitment to product quality and reliability makes them a trusted choice for power distribution panels and other electrical components in the boating industry.
Fast deliveries of yacht equipment, calculation, selection of analogues and spare parts. Send us your request and we will contact you ASAP with a solution. We deliver in Cyprus, throughout Europe and worldwide. More than 10 years of experience.
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1-2 weeks delivery time The Blue Sea 9003e e-Series Battery Switch is a 350A continuous single-circuit ON-OFF switch for systems up to 48V DC. It supports 600A intermittent and 1200A starting loads, accepts 4/0 AWG cables, and uses 3/8"-16 (M10) studs. Cable clearance: 1.10" (27.94 mm). Weight: 0.95 lb (0.43 kg). |
$ 86.04
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1-2 weeks delivery time The Blue Sea 7061 Push Button Reset Only Circuit Breaker is a 40A thermal branch breaker for DC systems up to 32V, designed for panel mount 3/8-27 UNS with 1/4" male quick connect terminals. It features manual push-button reset, trip-free protection, and a compact body for high-density circuit layouts. Rated at 3000A @ 14.7V and 2500A @ 28V interrupt capacity, with operating range -10°C to +60°C, and ignition protected for gasoline engine compartments. |
$ 12.29
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1-2 weeks delivery time The Blue Sea 7701 ML Solenoid is a 12V DC magnetic latching solenoid rated for 500A continuous current, designed for engine, inverter, house loads, and emergency battery combine circuits. It draws no current in ON or OFF state and only consumes power when switching. The unit features silver alloy contacts, 3/8"-16 tin-plated copper studs with 7/8" (22 mm) length, and supports cable size up to 2x (4/0). Ratings include 500A continuous, 700A for 5 minutes, and 1000A starting (30 sec). Includes SPDT Remote Control Contura Switch 2145. Weight: 2.03 lb (0.92 kg). ABYC C-7, CE, IP66, ISO 8846, SAE J1171. |
$ 364.26
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1-2 weeks delivery time The Blue Sea 1733 is a compact Mini OLED DC voltmeter with a bright, daylight-readable display for accurate voltage monitoring in 12V and 24V systems. It mounts in a standard 1-1/8" hole, features reverse polarity protection, and delivers precise readings with 0.01V resolution in a waterproof, marine-ready design. |
$ 83.77
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1-2 weeks delivery time The Blue Sea Dual PowerPost 2018 is a dual-stud termination post with one 5/16"-18 stud and one 3/8"-16 stud, rated for 48 V DC, featuring a stud torque range of 120–140 in-lb (13.56 Nm). It mounts using #10 (M5) screws and is supplied with one red and one black insulator for polarity identification. |
$ 38.14
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1-2 weeks delivery time The Blue Sea 7650 Add-A-Battery Kit 120A is a dual-battery switching and charging kit rated at 120A for systems with two batteries and a single charge source. It includes an e-Series Dual Circuit Plus™ Battery Switch and an SI-ACR Automatic Charging Relay (12/24V DC, 120A). The system isolates engine and house circuits, provides emergency battery combine capability, and automatically manages charging without regulator adjustment or rewiring. Weight: 2.36 lb (1.07 kg). CE marked, ISO 8846 compliant. |
$ 301.71
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1-2 weeks delivery time The Blue Sea 1039 is a dual USB charger for 12V and 24V DC systems, delivering up to 4.8A total output with intelligent device recognition for fast, device-optimized charging. Designed to mount into an existing Contura switch aperture, it features internal filtering to reduce electronic interference, over-temperature protection, and a protective dust cap. The charger is potted for reliable operation in harsh marine environments and provides IP45 protection with the cover closed. |
$ 75.03
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1-2 weeks delivery time The Blue Sea 5035 ST Blade Fuse Block provides 6 independent ATO®/ATC® fused circuits for DC systems up to 32V DC, rated 30A per circuit and up to 40A per jumped circuit group. It features tin-plated copper fuse clips for corrosion resistance and improved efficiency, a clear insulating cover with label recesses for Small Format Labels, and a built-in spare fuse holder. The block mounts with #8 screws (M4) and accepts ring or snap fork terminals, with two terminal block jumpers included. |
$ 82.45
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1-2 weeks delivery time The Blue Sea 8378 DC Panel is an 18-position distribution panel for 12V DC systems with positive, negative, and grounding buses installed and fully pre-wired. It is rated to 100A maximum and features backlit circuit label positions and ON-indicating LEDs in all circuit positions. Panels with meters include a toggle switch for mounting up to three battery banks, and analog meter panels are owner-upgradable to 24V using meters 8240 or 8243 (18–32V DC). Dimensions are 7.50 × 14.75 × 2.50 in and weight is 7.80 lb (3.54 kg). Includes branch breakers plus analog voltmeter and ammeter with shunt. |
$ 1,582.61
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1-2 weeks delivery time The Blue Sea MaxiBus 2127 is a busbar rated for 250 A continuous current, featuring four 5/16"-18 stainless steel studs and supporting 300 V AC / 48 V DC. It uses a tin-plated copper bus (CDA 110 / UNS 11000), a UL 94-V0 glass-reinforced thermoplastic base, and has a recommended stud torque of 132 in-lb (14.91 N·m). |
$ 68.25
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1-2 weeks delivery time The Blue Sea 1001 CableClam 0.68" is a waterproof cable pass-through designed for antenna cable installations above the waterline. It allows co-axial cables to be routed without removing factory-installed connectors, supporting cable diameters up to 0.31" (7.87 mm) and connector diameters up to 0.68" (17.27 mm). The body is made from acetal with a UV-stabilized thermoplastic ring and a UV-stabilized Buna-N rubber seal for reliable weather protection. |
$ 34.86
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1-2 weeks delivery time The Blue Sea 1001100 CableClam is a waterproof cable pass-through for connectors up to 17.27 mm and cables up to 7.87 mm diameter, designed for above-waterline installations. Features a 316 stainless steel dress cap, UV-stabilized thermoplastic ring, Buna-N rubber seals (4.19 mm / 5.59 mm holes), and accepts #6 × 7/8″ mounting screws. Weight: 0.2 kg. |
$ 48.29
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1-2 weeks delivery time The Blue Sea 1002 CableClam 0.83" is a waterproof cable pass-through designed for antenna and co-axial cable installations above the waterline. It allows cables to be routed without removing factory-installed connectors, supporting cable diameters up to 0.44" (11.18 mm) and connector diameters up to 0.83" (21.08 mm). The acetal body, UV-stabilized thermoplastic ring, and UV-stabilized Buna-N rubber seal provide reliable environmental protection. |
$ 36.03
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1-2 weeks delivery time The Blue Sea 1002100 CableClam is a waterproof cable pass-through for connectors up to 21.08 mm and cables up to 11.18 mm diameter, designed for above-waterline installation. Includes a 316 stainless steel dress cap, UV-stabilized thermoplastic ring, Buna-N rubber seals (5.59 mm / 9.53 mm holes), and accepts #8 × 7/8″ mounting screws. Weight: 0.2 kg. |
$ 56.24
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1-2 weeks delivery time The Blue Sea 1003 CableClam 1.40" is a waterproof cable pass-through designed for antenna and co-axial cable installations above the waterline. It enables cable routing without removing factory-installed connectors and supports cable diameters up to 0.56" (14.22 mm) and connector diameters up to 1.40" (35.56 mm). The acetal body, UV-stabilized thermoplastic ring, and UV-stabilized Buna-N rubber seal provide durable weather resistance. |
$ 39.93
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1-2 weeks delivery time The Blue Sea 1003100 CableClam is a waterproof pass-through for cables up to 14.22 mm and connectors up to 35.56 mm, designed for above-waterline installation. Features a 316 stainless steel dress cap, UV-stabilized thermoplastic ring, Buna-N rubber seal, and accepts #8 × 7/8″ mounting screws. Weight: 0.2 kg. |
$ 59.83
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1-2 weeks delivery time The Blue Sea 1007 Side Entry CableClam is a waterproof side-entry cable pass-through designed for antenna cable installations above the waterline. Its one-piece side-mount design allows installation without removing factory-installed connectors and supports cable diameters up to 0.28" (7.11 mm) with connector diameters up to 1" (25.4 mm). The low-profile, contoured housing reduces the risk of line snagging and includes all required fasteners. |
$ 14.19
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1-2 weeks delivery time The Blue Sea 1007100 Side Entry CableClam is a water-resistant cable pass-through for cables up to 7.11 mm and connectors up to 25.4 mm, designed for above-waterline side mounting. Features a 316 stainless steel dress cap, UV-stabilized thermoplastic ring, Buna-N seal, and includes mounting fasteners. Weight: 0.2 kg. |
$ 29.72
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What are the primary components of marine electrical systems, and how do they contribute to the functionality of a boat?
Marine electrical systems consist of several key components that are essential for the functionality of a boat. These components include fuse blocks, circuit breaker panels, toggle switches, terminal blocks, and busbars, among others. Fuse blocks and heavy duty circuit breaker panels provide crucial circuit protection, ensuring that electrical circuits are safeguarded against overloads and short circuits. Toggle switches and terminal blocks facilitate the operation and connection of various electrical devices and systems onboard, while busbars enable efficient power distribution throughout the vessel. Innovative electrical systems, such as those offered by Blue Sea Systems, are engineered to withstand marine conditions, providing water resistance and durability. These components collectively contribute to reliable power distribution, efficient circuit protection, and overall electrical system performance, ensuring the safety and functionality of the boat.
In addition to these essential components, marine electrical systems may also include specialized equipment like switch panels and battery chargers. A 12-circuit switch panel allows for convenient control over multiple electrical circuits, while heavy-duty battery chargers ensure efficient charging of onboard batteries. Remote battery switches provide convenient control over battery banks, enhancing operational flexibility. Surface-mounted powerbars serve as centralized distribution points for electrical connections, simplifying wiring and maintenance tasks. As a trusted supplier in the marine industry, Blue Sea Systems offers fast-charging solutions and ignition-protected components like the SI-ACR, ensuring safe and reliable operation. Single-pole components like the L-series, AMG, and MIDI fuses provide essential circuit protection, while wire gauges (AWG) are carefully selected to meet the reliability standards of boating applications For centralized safety and protection, consider integrating a Blue Sea Fuse Block into your setup.
Whether you're upgrading an existing setup or outfitting a new vessel, the inclusion of a Blue Sea Battery Switch ensures dependable power control and long-lasting performance in demanding marine environments.
How do fuse blocks, battery switches and circuit breaker panels enhance the safety and reliability of marine electrical systems?
Fuse blocks, battery switches, and circuit breaker panels significantly enhance the safety and reliability of marine electrical systems by offering structured, protected, and efficient power distribution. Built to endure harsh marine conditions, components from Blue Sea Systems Electrical—such as water-resistant fuse blocks and ignition-protected battery switches—ensure dependable performance over time.
Circuit protection devices like the ST blade fuse and 285-series circuit breaker safeguard against electrical overloads and short circuits, reducing the risk of onboard fires or equipment failure. Products like the 5026 and 6006 circuit breakers are engineered to withstand high loads and corrosive marine environments, while surface-mount fuse blocks and powerbars provide neat, space-saving solutions for circuit management.
These components are often key parts of the Blue Sea Add a Battery system, enabling optimized battery usage and protection. High-amperage ratings (e.g., 150 amps) and advanced features like the 7610 relay and 2104 switch—both ignition-protected—further elevate the safety standards of your vessel's electrical setup, offering peace of mind and operational reliability in any marine scenario.
What are the advantages of using specialty components like solenoid switches, busbar, terminal blocks, chargers and inverter systems in marine applications?
Specialty components like solenoid switches, busbars, terminal blocks, chargers, and inverter systems offer numerous advantages in marine applications, particularly when integrated into a well-designed Marine Wiring system. Solenoid switches enable reliable remote control of high-current circuits, making it easier to manage systems like lighting, pumps, and winches with minimal energy loss.
Heavy-duty solenoid switches are designed to withstand the rigorous demands of marine environments, offering robust performance and longevity. Surface-mount powerbars provide a convenient and organized solution for connecting multiple electrical devices, ensuring efficient power distribution throughout the vessel. With capabilities for fast charge and ignition-protected features, these components deliver reliable power management and safety, enhancing the overall functionality and performance of marine electrical systems.
For additional reliability and organization in your vessel's electrical setup, consider integrating a Blue Sea Terminal Block, ensuring secure and efficient connections in challenging marine environments.