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 Blue Sea 8172B LED indicator light is a green 12/24V DC push-in panel indicator for Blue Sea circuit breaker panels, used for status or alarm signalling with easy installation and low current consumption.
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$ 4.53
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1-2 weeks delivery time The Blue Sea 8177 AC Main Panel (European) is a 230V AC main circuit breaker panel combining switching and circuit protection in one device. It features a trip-free double pole 16A breaker, red reverse polarity LED, and rear safety ground screw. Panel size is 2.63 × 3.75 in (66.8 × 95.25 mm) with weight 0.51 lb (0.23 kg). Supplied with green and red indicator LEDs and a double pole 16A A-Series breaker.
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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 8214 DC H2O Compact Black Label Kit includes 60 common DC labels made from reinforced weatherproof material for marine electrical panels. Designed for Contura waterproof circuit breaker panels, Contura waterproof fuse panels, and ST Blade fuse blocks. Provides compact black labels for DC circuit identification. Total weight 0.04 lb (0.02 kg).
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$ 16.22
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1-2 weeks delivery time The Blue Sea 8216 Dimmer Control Switch Gray is a Contura III SPDT switch with (ON)-OFF-(ON) momentary action designed for labeled dimmer control in waterproof panels. It mounts in Blue Sea Systems waterproof panels and is marked BRIGHT and DIM for lighting control circuits. Rated 20A at 12V and 15A at 24V, with internal and external gasket panel seals and an operating temperature range from −40°C to +85°C. Weight 0.09 lb (0.04 kg).
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$ 25.50
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1-2 weeks delivery time The Blue Sea 8218 is a gray Contura III DPST OFF-ON switch designed for Blue Sea Systems water-resistant panels and marine DC circuits such as navigational lights. It is vibration, shock, thermoshock, moisture, and salt spray resistant, ignition protected, and certified to UL1500 and ISO 8846. Rated 20A at 12V and 15A at 24V, with one embedded LED (18 mA operating current, LED active in ON position), internal and external gasket seals, and operating range −40°C to +85°C. Weight 0.09 lb (0.04 kg).
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$ 31.78
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1-2 weeks delivery time The Blue Sea 8220 is a gray Contura III DPDT switch with ON-OFF-ON action for dual-circuit marine control, commonly used for combining navigation and anchor lights with a shared bulb. Designed for Blue Sea Systems water-resistant panels, it is vibration, shock, thermoshock, moisture, and salt spray resistant, ignition protected, and certified to UL1500 and ISO 8846. Rated 20A at 12V and 15A at 24V, with two embedded LEDs (18 mA operating current, LED active in ON position), sealed with internal and external gaskets, operating from −40°C to +85°C. Weight 0.09 lb (0.04 kg).
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$ 34.24
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1-2 weeks delivery time The Blue Sea 8230 is a gray Contura III SPST OFF-ON switch designed for Blue Sea Systems water-resistant panels and marine lighting circuits. It is vibration, shock, thermoshock, moisture, and salt spray resistant, ignition protected, and certified to UL1500 and ISO 8846. Rated 20A at 12V and 15A at 24V, with one embedded LED (18 mA operating current, LED active in ON position), internal and external gasket seals, and operating range −40°C to +85°C. Weight 0.09 lb (0.04 kg).
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$ 23.99
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1-2 weeks delivery time The Blue Sea 8231 is a gray Contura III SPST switch with OFF-(ON) momentary action, designed for Blue Sea Systems water-resistant panels and control circuits such as horns or windshield wipers. It is vibration, shock, thermoshock, moisture, and salt spray resistant, ignition protected, and certified to UL1500 and ISO 8846. Rated 20A at 12V and 15A at 24V, with no embedded LEDs, internal and external gasket seals, and operating range −40°C to +85°C. Weight 0.09 lb (0.04 kg).
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$ 22.94
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1-2 weeks delivery time The Blue Sea 8232 is a gray Contura III SPDT switch with ON-OFF-ON action for dual-circuit marine control, commonly used for combining navigation and anchor lights with independent bulbs. Designed for Blue Sea Systems water-resistant panels, it is vibration, shock, thermoshock, moisture, and salt spray resistant, ignition protected, and certified to UL1500 and ISO 8846. Rated 20A at 12V and 15A at 24V, with two embedded LEDs (18 mA operating current, LED active in ON position), internal and external gasket seals, and operating range −40°C to +85°C. Weight 0.09 lb (0.04 kg).
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$ 25.31
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1-2 weeks delivery time The Blue Sea 8233 Contura III switch is an SPDT gray rocker with (ON)-OFF-ON action, featuring a momentary ON position and designed for bilge pump and dual-mode circuit control. Rated 20A at 12V and 15A at 24V, it is ignition protected and built for Blue Sea Systems water-resistant panels. The switch is resistant to vibration, shock, moisture, salt spray, and thermoshock, includes one embedded LED (18 mA, active in ON position), and operates from −40°C to +85°C. Weight 0.09 lb (0.04 kg).
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$ 31.78
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1-2 weeks delivery time The Blue Sea 8234 Contura III switch is an SPDT gray rocker with (ON)-OFF-(ON) momentary action on both sides, designed for windlass, trim tabs, and powered hatches. Rated 20A at 12V and 15A at 24V, it is built for Blue Sea Systems water-resistant panels and is ignition protected for gasoline powered boats. The switch is resistant to vibration, shock, thermoshock, moisture, and salt spray, operates from −40°C to +85°C, has no embedded LEDs, and includes internal and external gasket seals. Weight 0.09 lb (0.04 kg).
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$ 30.72
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1-2 weeks delivery time The Blue Sea 8235 is a DC digital voltmeter with 0–60V measuring range for 12V, 24V, 32V, 36V, and 42V DC systems. It features a splashproof front, three display brightness levels, and manual sleep mode for power saving. Input voltage 7–60V DC (meter powered by 8–32V supply for standard systems). Maximum power consumption up to 1 W depending on brightness and mode. Weight 0.45 lb (0.2 kg).
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$ 364.26
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1-2 weeks delivery time The Blue Sea 8236 is a DC digital ammeter with a measuring range from −500A to +500A, designed for 8–32V DC systems. It includes a 500A shunt and features a splashproof front, three display brightness levels, and manual sleep mode for reduced power consumption. Standard configuration measures on the negative side of the circuit; a shunt shifter is required for positive-side installations such as alternators. Maximum power consumption up to 1 W. Weight approx. 0.5 kg.
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$ 432.28
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1-2 weeks delivery time The Blue Sea 8237 AC Digital Voltmeter measures AC voltage from 80 to 270V and is designed for 120V and 240V single-phase systems. It features a splashproof front, three selectable display brightness levels, and manual sleep mode for power saving. Character height 14.29 mm. Maximum power consumption up to 1 W depending on display settings. Weight approx. 0.33 kg.
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$ 432.28
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1-2 weeks delivery time The Blue Sea 8238 AC Digital Ammeter measures AC current from 0 to 150A for 120V and 240V single-phase systems. Supplied with a current transformer, it features a splashproof front, three display brightness levels, and manual sleep mode for reduced power consumption. Character height 14.29 mm. Power consumption up to 1 W. Weight approx. 0.33–0.35 kg.
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$ 526.66
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1-2 weeks delivery time The Blue Sea 8240 DC Voltmeter measures voltage in the 18–32V DC range and is designed for panel mounting with a 2.75" (69.85 mm) face size. It uses a simple 4-wire connection and features an internal shunt. The meter includes a backlit face with separate 12V or 24V DC backlight connections. Meter current is 1 mA at full scale. Weight 0.11 kg.
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$ 76.14
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1-2 weeks delivery time The Blue Sea 8247 AC Digital Multi-Function Meter measures AC current (0–150A), voltage (80–270V), power (0–35kW), and frequency (40–90Hz) in single-phase 120/240V systems. Includes high/low voltage and high current alarms with audio and visual alerts. Splashproof front, programmable sleep mode, and adjustable display brightness. Supplied with 150A current transformer.
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$ 613.40
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1-2 weeks delivery time The Blue Sea 8248 DC Digital Multi-Function Meter measures DC current from −500 to +500A and voltage from 0 to 60V with 0.01V resolution. Designed for 12–42V DC systems, it features programmable high/low voltage alarms with audio and visual alerts, adjustable display brightness, and programmable sleep mode. Splashproof front design. Includes 500A shunt and operates on the negative side of the circuit (shunt shifter required for positive-side installations).
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$ 556.77
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1-2 weeks delivery time The Blue Sea 8259 is a 3-position Contura switch mounting panel designed for Contura and Contura II/III switches. It supports panel thicknesses from 0.06" to 0.38" and provides a fixed multi-switch mounting solution for marine and vehicle control panels. Weight: 0.07 kg.
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$ 13.22
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1-2 weeks delivery time The Blue Sea 8261 is an 8-position water-resistant DC switch panel for 12V and 24V systems. Includes Contura OFF-ON switches with LED indicators and fuse holders. Panel rating 90A. Dimensions: 95 × 238 × 76 mm.
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$ 439.08
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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.