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 7507 DeckHand Dimmer is a 12V DC digital lighting dimmer rated at 12A for non-regulated LED, incandescent, and halogen lights. It provides continuous output control from 0–100% of input voltage, includes last-setting memory, and supports an illuminated exit with adjustable time delay. The unit features offset mounting tabs for close installation and is supplied with a momentary (ON)-OFF-(ON) control switch (PN 8216). Operating temperature range is −40°C to +85°C with 2 mA maximum parasitic current and ignition protected IP67 rating. |
$ 161.62
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1-2 weeks delivery time The Blue Sea 7508 DeckHand Dimmer is a 12V DC digital lighting dimmer rated at 25A for non-regulated LED, incandescent, and halogen lights. It provides continuous output control from 0–100% of input voltage, includes last-setting memory, and supports an illuminated exit with adjustable time delay. The unit features offset mounting tabs for close installation and is supplied with a momentary (ON)-OFF-(ON) control switch (PN 8216). Operating range is −40°C to +85°C with 2 mA maximum parasitic current and ignition protected IP67 rating. |
$ 187.85
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1-2 weeks delivery time The Blue Sea 7509 DeckHand Dimmer is a 24V DC digital lighting dimmer rated at 12A for non-regulated LED, incandescent, and halogen lights. It provides continuous output control from 0–100% of input voltage, stores the last brightness setting, and supports an illuminated exit with adjustable time delay. The unit includes offset mounting tabs for close installation and is supplied with a momentary (ON)-OFF-(ON) control switch (PN 8216). Operating temperature range is −40°C to +85°C with 2 mA maximum parasitic current and ignition protected IP67 rating. |
$ 184.08
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1-2 weeks delivery time The Blue Sea 7531 P12 Battery Charger is a 12V DC charger rated at 25A total output with three positive outputs and one negative, designed for dry mount installation in harsh environments. It features four-stage charging with PreFloat™, power factor corrected AC input (115–230V AC, 45–65Hz), battery temperature compensation, and Charge Coordination with Blue Sea ACRs. The unit supports AGM, flooded, gel, and TPPL batteries, includes a large multi-language display, M6 studs, ignition protection, and operates from −20°C to +70°C. Dimensions are 13.03 × 8.46 × 3.66 in, weight 12.00 lb. |
$ 1,188.74
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1-2 weeks delivery time The Blue Sea 7532 P12 Battery Charger is a 12V DC charger rated at 40A total output with three positive outputs and one negative, designed for dry mount installation in harsh environments. It features four-stage charging with PreFloat™, power factor corrected AC input (115–230V AC, 45–65Hz), battery temperature compensation, and Charge Coordination with Blue Sea ACRs. Supports AGM, flooded, gel, and TPPL batteries. Dimensions are 13.03 × 8.46 × 3.66 in, stud size M6, operating range −20°C to +70°C, weight 12.00 lb. |
$ 1,511.66
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1-2 weeks delivery time The Blue Sea 7565 C-Series circuit breaker is a triple-pole 50A AC magnetic hydraulic breaker with flat rocker actuator and trip-free design for 120/240V AC systems. It provides 5000A interrupt capacity for ABYC-compliant main protection and trips all poles simultaneously. Features include 1/4-20 tin-plated brass studs, 35 in-lb stud torque, −40°C to +85°C operating range, and 10,000 switching cycles. |
Our managers will contact you and clarify the terms of the order
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1-2 weeks delivery time The Blue Sea 7583 C-Series circuit breaker is a double-pole 80A AC magnetic hydraulic breaker with raised rocker actuator and trip-free design for 120/240V AC systems. It delivers 5000A interrupt capacity at 120V AC for ABYC main protection and trips both poles simultaneously if a fault occurs. Built with 1/4-20 tin-plated brass studs, 35 in-lb stud torque, −40°C to +85°C operating range, and rated for 10,000 switching cycles. |
Our managers will contact you and clarify the terms of the order
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1-2 weeks delivery time The Blue Sea 7601 M-Series Automatic Charging Relay (M-ACR) is a 12/24V DC dual-sensing relay rated 65A continuous, designed to manage alternator charging current up to 65A for two battery banks. It supports start isolation, combines at 13.6V, opens at 12.35–12.75V, includes 1/4"-20 (M6) tinned brass studs, supports cable sizes from 6 AWG to 1/0 AWG, and is IP67 waterproof. Operating current is 90mA (combine) and 15mA (open), with 115A intermittent rating (5 min). |
$ 135.57
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1-2 weeks delivery time The Blue Sea 7607 BatteryLink® Charger is a 12V DC 20A multistage charger with integrated 170A Automatic Charging Relay (ACR), designed to charge two isolated battery banks from 100–240V AC shore power or from the alternator via DC charging. It supports AGM, Flooded, and TPPL batteries, provides 3-stage charging (14.4V absorption / 13.5V float), includes temperature compensation, start isolation, and emergency parallel function. Features include European CEE 7/7 plug, 1 negative and 2 positive outputs, 1/4"-20 and 3/8"-16 studs, and 6.75 lb weight. |
$ 704.03
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1-2 weeks delivery time The Blue Sea 7610 SI-ACR is a 12/24V DC automatic charging relay rated at 120A continuous, designed to automatically combine batteries during charging and isolate them during discharge and engine starting. It features dual sensing, start isolation, IP67 sealing, and ignition protection. Supports alternators up to 120A, uses 3/8"-16 (M10) studs, requires 1/0 AWG cable, and has a 210A (5 min) intermittent rating. Weight: 1.25 lb. |
$ 196.72
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1-2 weeks delivery time The Blue Sea 7611 BatteryLink™ Automatic Charging Relay is a 12/24V DC auto-ranging ACR with 120A continuous and 210A (5 min) intermittent rating, designed to automatically share a single charging source between two battery banks. It features dual sensing, integrated LED status indicator, auxiliary battery priority mode, 3/8"-16 (M10) tinned copper studs with 7/8" length, support for cable sizes up to 1/0 AWG, and IP67 ignition-protected construction. Weight: 1.25 lb. |
$ 186.89
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1-2 weeks delivery time The Blue Sea 7615 ATD Automatic Timer Disconnect is a 12V DC multi-function battery management relay rated 120A continuous and 210A (5 min) intermittent. It can operate as Timer Disconnect, Low Voltage Disconnect, Automatic Charging Relay, or signal-controlled solenoid. It supports selectable disconnect delays from 5 seconds to 4 hours, low-voltage thresholds from 11.0–12.0V, and features 3/8"-16 (M10) tinned copper studs, IP67 ignition-protected housing, and support for cable sizes up to 1/0 AWG. Weight: 1.25 lb. |
$ 243.67
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1-2 weeks delivery time The Blue Sea 7620 ML-ACR Automatic Charging Relay is a 12V DC magnetic latching (bi-stable) relay rated 500A continuous, 700A (5 min) and 1450A cranking (30 sec) for automatic combining and isolation of two large battery banks. It features dual sensing, start isolation, engine isolation, start assist, and low standby draw (13mA, <40mA monitor). The unit uses 3/8"-16 (M10) tinned copper studs with 1.50" length, supports 4/0 AWG x2 cable, and includes SPDT Remote Control Contura Switch PN 2146. Operating range −10°C to +60°C, live current switching up to 300A @ 12V DC, weight 2.04 lb. |
$ 418.86
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1-2 weeks delivery time The Blue Sea 7621 ML-ACR is a 24V DC magnetic latching Automatic Charging Relay rated 500A continuous, 700A (5 min) and 1450A cranking (30 sec) for automatic combining and isolation of two large battery banks. It features dual sensing, start isolation, engine isolation, and start assist functions, with low holding current (13mA nominal) and <7A during state change. Built with 3/8"-16 (M10) tinned copper studs with 1.50" length, supports 4/0 AWG x2 cable, switching cycles 100,000, operating range −10°C to +60°C, and includes SPDT Remote Control Contura Switch PN 2146. |
Our managers will contact you and clarify the terms of the order
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1-2 weeks delivery time The Blue Sea 7623 ML-ACR is a 24V DC magnetic latching Automatic Charging Relay with manual control, rated 500A continuous, 700A (5 min), and 1450A cranking. It automatically combines and isolates two battery banks during charging, discharge, and engine start, and supports start assist, start isolation, and engine isolation modes. Built with 3/8"-16 (M10) tinned copper studs (1.50" length), supports 4/0 AWG x2 cable, switching cycles 100,000, operating range −10°C to +60°C, and includes Remote Control Contura Switch PN 2146. |
$ 447.57
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1-2 weeks delivery time The Blue Sea 7635 m-LVD Low Voltage Disconnect is a 12V DC battery protection solenoid rated 65A continuous and 115A (5 min), designed to automatically disconnect non-essential loads when battery voltage drops below a set level. It features adjustable disconnect voltage, override and OFF modes via included remote switch, alarm output, IP67 waterproof housing, and supports cables up to 1/0 AWG on 1/4"-20 (M6) tinned brass studs with 7/16" length. Operating current is 95mA connected and 4mA open. |
$ 180.34
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1-2 weeks delivery time The Blue Sea 7649 Mini Add-A-Battery Kit 65A is a dual-battery management kit designed to control switching and automatic charging of two batteries from a single charge source. Rated at 65A, the kit includes an m-Series Mini Dual Circuit Plus™ Battery Switch and a 12/24V DC Automatic Charging Relay (ACR). It isolates engine and house circuits, supports emergency battery combining, and enables automatic charge sharing without regulator adjustment or rewiring. Weight: 1.00 lb (0.45 kg). |
$ 222.93
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1-2 weeks delivery time The Blue Sea 7650003 Add-A-Battery Kit is a dual-battery management system rated 120A, designed for boats with alternator output up to 120A. It includes an e-Series Dual Circuit Plus™ Battery Switch and a 12/24V SI-ACR Automatic Charging Relay to isolate start and house batteries while automatically managing charging. Weight: 2.36 lb (1.07 kg). |
$ 299.74
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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.