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 1016 is a dual USB 2.1A charger designed for 12V and 24V DC systems, providing simultaneous charging for two mobile devices. It fits the standard 1 1/8" (28.58 mm) mounting hole used by traditional 12V outlets and operates over a wide 9–32V input range. The charger is potted for harsh marine environments, features IP45 protection with the cover closed, and includes reverse polarity, short-circuit, and thermal overload protection.
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$ 43.75
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1-2 weeks delivery time The Blue Sea 1016200 is a white dual USB charger designed for 12/24V DC systems with 9–32V input range and total output of 5V DC ±5% at 2.1A. It fits a standard 1-1/8" (28.58 mm) socket cutout and features IP45 protection (cover closed), reverse polarity, short circuit, and thermal overload protection, corrosion-resistant contacts, and 15 mA parasitic draw. Weight: 0.10 lb (0.05 kg).
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$ 43.75
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1-2 weeks delivery time The Blue Sea 1044 is a USB 2.0 data and power extension port designed for remote control and connectivity of stereos or other USB-enabled devices from a phone or tablet. It mounts in a standard 1-1/8" dash opening and includes a prewired 5 ft (1.52 m) extension cable that plugs directly into a stereo USB port. A tethered protective dust cap provides IP45 protection when closed.
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$ 51.25
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1-2 weeks delivery time The Blue Sea 1070 Floyd Bell Turbo Series Alarm is a panel-mounted audible alarm for 12V and 24V DC systems with an adjustable sound level via a rotating bezel. It fits a standard 1" round aperture and operates over a wide 5–30V DC range. The alarm delivers up to 103 dB(A) at 30V DC, features a threaded attachment ring for secure mounting, and uses male quick-connect terminals for installation.
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$ 45.47
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1-2 weeks delivery time The Blue Sea 11001 is a 3-position e-Series battery selector switch rated 325A continuous and 32V DC, designed for switching a single battery to a single load group. Includes Alternator Field Disconnect (AFD) protection, supports 4/0 AWG cables, and features 3/8″ (M10) studs. Dimensions support surface or rear mounting. Weight: 0.52–0.59 kg.
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$ 104.44
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1-2 weeks delivery time The Blue Sea 1147 is a remote control panel designed for systems using two ML-Series battery switches and one ML-Series Automatic Charging Relay. It features three control positions with lockout slides to reduce the risk of accidental switching and supports both 12V and 24V DC systems. The panel includes Contura remote control switches and is compatible with a wide range of ML-Series switches, solenoids, and ML-ACR units.
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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 1193 is a horizontal AC distribution panel featuring a 30A double-pole ELCI main residual current circuit breaker with a 30 mA leakage trip for whole-boat shore power protection per ABYC E-11. It includes four 15A single-pole AC branch flat rocker circuit breakers, red reverse polarity LED indication, and fully backlit circuit label positions with green “ON” LEDs for clear status visibility.
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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 1207 is a compact 360 Panel AC distribution panel for 230V systems, featuring a 16A double-pole main circuit breaker, two 8A single-pole branch circuit breakers, and an integrated AC micro voltmeter (0–250V). All circuit label positions are backlit and equipped with green “ON” indicator LEDs for clear visibility. The panel includes a square-format AC label set and is designed for organized, space-efficient 230V AC power distribution.
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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 1211 is a 360 Panel AC distribution panel for 230V systems with four branch circuit positions, supplied with four 8A single-pole flat rocker circuit breakers. All circuit label positions are backlit and feature green “ON” indicator LEDs for clear status visibility. The panel supports installations up to 100A total capacity (dependent on wiring and protection) and includes a square-format AC label set.
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$ 412.45
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1-2 weeks delivery time The Blue Sea 1223 is a 360 Panel 12V DC distribution panel with twelve branch circuit positions, supplied with twelve 15A single-pole flat rocker circuit breakers. It supports configurations from 4 to 32 branch circuits and provides up to 100A capacity, depending on wiring and overcurrent protection. The panel includes a square-format DC label set and is designed for compact, vertically oriented DC power distribution.
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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 1227 is a 360 Panel 12V DC distribution panel with eight branch circuit positions, supplied with eight 15A single-pole flat rocker circuit breakers and an integrated DC digital multifunction meter with alarm. It supports configurations from 4 to 32 branch circuits and provides up to 100A panel capacity, depending on wiring and overcurrent protection. The panel includes a square-format DC label set and is designed for compact, vertically oriented DC installations with system monitoring.
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$ 1,163.73
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1-2 weeks delivery time The Blue Sea 1464 is a square-format 360 Panel DC panel combining circuit protection, switching, and voltage monitoring across twelve branch circuits. Designed for 12V DC systems, it uses push-button reset-only circuit breakers with SPST ON-OFF rocker switches and includes an analog DC voltmeter. The panel supports up to 120A total capacity (dependent on wiring and protection) and allows voltage monitoring of up to three battery banks via an integrated selector toggle.
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$ 700.14
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1-2 weeks delivery time The Blue Sea 1478 is a 360 Panel accessory module combining one 12V DC socket and one dual USB charger in a compact square-format panel. Designed for 12V DC systems, the USB charger provides up to 2.1A total output for charging smartphones and tablets, while the 12V socket supports loads up to 15A for powering or charging 12V accessories. The module features corrosion-resistant materials and protective dust caps for reliable use in marine environments.
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$ 248.04
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1-2 weeks delivery time The Blue Sea 1480 is a 360 Panel rotary AC source selector designed to switch between two 120V AC shore power sources and one 240V AC source, distributing power to two 120V AC load groups. Rated at 65A, it features red reverse polarity LED indicators and green power-available LEDs, providing clear status indication in a compact 360 Panel module.
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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 1732 is a compact Mini OLED ammeter with a bright, daylight-readable display for monitoring DC current from –100A to +100A. Designed for 12V and 24V systems, it mounts in a standard 1-1/8 in hole, supports positive or negative side wiring, and includes reverse polarity protection for reliable operation in marine environments.
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$ 151.87
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1-2 weeks delivery time The Blue Sea 1732200 Mini OLED DC Ammeter is a compact current meter for 12/24V systems with 8–36V input range, measuring −100A to 100A DC with 0.1A resolution and ±2% accuracy. Designed for installation in a standard 1-1/8" (28.58 mm) panel hole, it features a waterproof daylight-readable OLED display, reverse polarity protection, 110A intermittent rating, 175A cranking rating (30 sec), operating temperature −40°C to 70°C, and 15 mA operating current. Weight: 0.70 lb (0.32 kg).
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$ 151.87
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1-2 weeks delivery time The Blue Sea 1733200 Mini OLED DC Voltmeter is a compact voltage meter for 12/24V systems with 8–36V DC input range, 0.01 resolution, and ±1.0% accuracy. Designed for installation in a standard 1-1/8" (28.58 mm) panel hole, it features a waterproof daylight-readable OLED display, reverse polarity protection, 15 mA operating current, operating temperature −40°C to 70°C, and a 10,000-hour lifecycle. Weight: 0.20 lb (0.09 kg).
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$ 83.77
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1-2 weeks delivery time The Blue Sea 1741 is a compact Mini OLED temperature monitor with a bright, daylight-readable display for precise temperature monitoring in 12V and 24V systems. It measures temperatures from –40°C to 125°C (–40°F to 250°F), mounts in a standard 1-1/8 in hole, and includes a submersible temperature sensor for reliable operation in marine environments.
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$ 115.83
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1-2 weeks delivery time The Blue Sea 1820 is a general-purpose, fully submersible temperature sensor designed for use with Blue Sea Systems devices that require temperature input. It features IP68 protection, a wide operating temperature range, and simple installation with double-sided tape and non-polarized wiring.
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$ 31.39
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1-2 weeks delivery time The Blue Sea 1830 M2 DC Multimeter with SoC accurately monitors the state of charge of a single battery bank while measuring three voltages and one current. It supports programmable shunt ratios, includes a 500A shunt, provides external relay activation, and operates across 12V, 24V, and 48V DC systems.
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$ 605.92
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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.