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 7140 187-Series Circuit Breaker is a 60A surface-mount Type III breaker for 48V DC systems, combining switching and circuit protection in a single waterproof device. It features a thermally responsive bi-metal blade and trip-free manual reset lever with clear trip indication. Built with 5/16″-18 (M8) stud terminals for high-torque cable connections. Rated up to 5000A @ 14V DC interrupt capacity. Weight: 0.58 lb (0.26 kg).
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$ 152.60
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1-2 weeks delivery time The Blue Sea 7141 187-Series Circuit Breaker is a 70A surface-mount Type III breaker for 48V DC systems, combining switching and circuit protection in one waterproof unit. It uses a thermally responsive bi-metal blade and a trip-free manual reset lever with clear trip indication. Designed with 5/16″-18 (M8) stud terminals for heavy cable lugs and high-torque connections. Interrupt capacity up to 5000A @ 14V DC. Weight: 0.58 lb (0.26 kg).
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$ 152.60
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1-2 weeks delivery time The Blue Sea 7142 187-Series Circuit Breaker is an 80A surface-mount Type III breaker for 48V DC systems, combining switching and circuit protection in one waterproof device. It features a thermally responsive bi-metal blade and a trip-free manual reset lever with clear trip indication. Built with 5/16″-18 (M8) stud terminals for heavy cable lugs and high-torque connections. Interrupt capacity up to 5000A @ 14V DC. Weight: 0.58 lb (0.26 kg).
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$ 152.60
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1-2 weeks delivery time The Blue Sea 7144 187-Series Circuit Breaker is a 100A surface-mount Type III breaker for 48V DC systems, combining switching and circuit protection in one waterproof device. It uses a thermally responsive bi-metal blade and a trip-free manual reset lever with vertical or horizontal status indication. Equipped with 5/16″-18 (M8) stud terminals for heavy cable lugs and high-torque connections. Interrupt capacity up to 5000A @ 14V DC. Operating range: -40°C to +85°C. Weight: 0.58 lb (0.26 kg).
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$ 152.60
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1-2 weeks delivery time The Blue Sea 7146 187-Series Circuit Breaker is a 120A surface-mount Type III breaker for 48V DC systems, combining switching and circuit protection in one waterproof unit. It uses a thermally responsive bi-metal blade and a trip-free manual reset lever with vertical or horizontal trip indication. Designed with 5/16″-18 (M8) stud terminals for heavy gauge lugs and high-torque connections. Interrupt capacity up to 5000A @ 14V DC. Operating temperature range: -40°C to +85°C. Weight: 0.58 lb (0.26 kg).
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$ 152.60
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1-2 weeks delivery time The Blue Sea 7147 187-Series Circuit Breaker is a 135A surface-mount Type III breaker for 48V DC systems, combining switching and circuit protection in one waterproof device. It uses a thermally responsive bi-metal blade and a trip-free manual reset lever with vertical or horizontal trip indication. Designed with 5/16″-18 stud terminals for heavy gauge wire lugs and high-torque connections. Interrupt capacity up to 5000A @ 12V DC. Operating temperature range: −40°C to +85°C. Weight: 0.58 lb (0.26 kg).
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$ 144.73
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1-2 weeks delivery time The Blue Sea 7148 187-Series Circuit Breaker is a 150A surface-mount Type III breaker for 48V DC systems, combining switching and circuit protection in one waterproof unit. It features a thermally responsive bi-metal blade and a trip-free manual reset lever with vertical or horizontal trip indication. Built with 5/16″-18 stud terminals for heavy gauge lugs and high-torque connections. Interrupt capacity up to 5000A @ 14V DC. Operating temperature range: −40°C to +85°C. Weight: 0.58 lb (0.26 kg).
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$ 152.60
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1-2 weeks delivery time The Blue Sea 7149 187-Series Circuit Breaker is a 200A surface-mount Type III breaker for 48V DC systems, combining switching and circuit protection in one waterproof unit. It features a thermally responsive bi-metal blade and a trip-free manual reset lever with clear trip indication. Designed with 5/16″-18 stud terminals for heavy cable lugs and high-torque connections. Interrupt capacity up to 5000A @ 14V DC. Operating temperature range: −40°C to +85°C. Weight: 0.58 lb (0.26 kg).
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$ 200.65
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1-2 weeks delivery time The Blue Sea 7180 285-Series Circuit Breaker is a 25A surface-mount Type III breaker for DC systems up to 48V, combining manual switching and circuit protection in one unit. It features a trip-free, thermally responsive bi-metal blade, visible reset lever, and ignition-protected, IP67 weather-resistant design for marine use. Terminal stud: M6 (accepts 1/4" ring terminals). Operating range: -40°C to +85°C. Weight: 0.50 lb (0.23 kg).
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$ 94.93
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1-2 weeks delivery time The Blue Sea 7181 285-Series Circuit Breaker is a 30A surface-mount Type III breaker for DC systems up to 48V, combining switching and circuit protection in one unit. It features a trip-free, thermally responsive bi-metal blade, visible reset lever, and ignition-protected, IP67 weather-resistant construction for marine installations. Terminal stud: M6 (accepts 1/4" ring terminals). Operating range: -40°C to +85°C. Weight: 0.50 lb (0.23 kg).
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$ 94.93
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1-2 weeks delivery time The Blue Sea 7182 285-Series Circuit Breaker is a 40A surface-mount Type III breaker for DC systems up to 48V, combining switching and circuit protection in one unit. It is a drop-in replacement for 185-Series breakers and features a trip-free, thermally responsive bi-metal blade with a visible reset lever. The unit is ignition protected, IP67 weather resistant, and uses an M6 stud accepting 1/4" ring terminals. Operating range: -40°C to +85°C. Weight: 0.50 lb (0.23 kg).
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$ 94.93
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1-2 weeks delivery time The Blue Sea 7183 285-Series Circuit Breaker is a 50A surface-mount Type III breaker for DC systems up to 48V, combining manual switching and circuit protection in one unit. It is a drop-in replacement for 185-Series breakers and features a trip-free thermally responsive bi-metal blade with a visible reset lever for status indication. The unit is ignition protected, IP67 weather resistant, and uses an M6 stud for 1/4" ring terminals. Operating range: -40°C to +85°C. Weight: 0.50 lb (0.23 kg).
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$ 94.93
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1-2 weeks delivery time The Blue Sea 7184 285-Series Circuit Breaker is a 60A surface-mount Type III breaker for DC systems up to 48V, combining manual switching and circuit protection in one device. It is a drop-in replacement for 185-Series breakers and uses a thermally responsive bi-metal blade with a visible reset lever to indicate trip status. The breaker is trip-free, ignition protected, and IP67 weather resistant, with an M6 stud for 1/4" ring terminals. Operating temperature range: -40°C to +85°C. Weight: 0.50 lb (0.23 kg).
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$ 94.93
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1-2 weeks delivery time The Blue Sea 7185 285-Series Circuit Breaker is a 70A surface-mount Type III breaker for DC systems up to 48V, combining manual switching and circuit protection in one unit. It is a drop-in replacement for 185-Series breakers and uses a thermally responsive bi-metal blade with a visible reset lever for trip status indication. The breaker features a trip-free mechanism, M6 terminal stud for 1/4" ring terminals, IP67 weather resistance, and ignition protection for gasoline engine compartments. Operating range: -40°C to +85°C. Weight: 0.50 lb (0.23 kg).
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$ 94.93
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1-2 weeks delivery time The Blue Sea 7186 285-Series Circuit Breaker is an 80A surface-mount Type III breaker for DC systems up to 48V, combining manual switching and circuit protection in one unit. It is a drop-in replacement for 185-Series breakers and features a thermally responsive bi-metal blade with a visible reset lever for trip status indication. The breaker is trip-free, ignition protected, and IP67 weather resistant, with an M6 terminal stud for 1/4" ring terminals. Operating range: -40°C to +85°C. Weight: 0.50 lb (0.23 kg).
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$ 94.93
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1-2 weeks delivery time The Blue Sea 7188 285-Series Circuit Breaker is a 120A surface-mount Type III breaker for DC systems up to 48V, combining manual switching and circuit protection in one device. It is a drop-in replacement for 185-Series breakers and uses a thermally responsive bi-metal blade with a visible reset lever for trip indication. The breaker features trip-free operation, M6 terminal studs for 1/4" ring terminals, and is ignition protected with IP67 weather resistance. Operating range: -40°C to +85°C. Weight: 0.50 lb (0.23 kg).
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$ 94.93
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1-2 weeks delivery time The Blue Sea 7189 is a 285-Series 150A surface-mount circuit breaker for DC systems up to 48V, combining manual switching and circuit protection in one unit. Type III trip-free design with thermal bi-metal blade, M6 studs for 1/4" ring terminals, ignition protection, and IP67 weather-resistant construction.
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$ 94.93
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1-2 weeks delivery time The Blue Sea 7198 is a panel mount adapter designed for 285-Series and 185-Series panel mount circuit breakers. It features a self-trimming molded rubber bezel for clean and secure panel installation. The adapter is intended for use with multiple 285-Series panel mount breaker ratings from 25A to 150A and has a listed weight of 0.04 lb (0.02 kg).
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$ 9.99
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1-2 weeks delivery time The Blue Sea 7200 A-Series circuit breaker is a single pole, toggle actuator breaker rated at 5A for AC and DC systems, with maximum voltage up to 240V AC and 32V DC. It combines switching and circuit protection in one device and uses a magnetic hydraulic, trip-free mechanism that cannot be held ON during a fault condition. Designed as the industry standard breaker for Blue Sea Systems electrical panels, it features a black toggle actuator, stainless steel hardware, 10,000 switching cycles, and operating temperature range from -40°C to +85°C.
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$ 29.92
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1-2 weeks delivery time The Blue Sea 7202 A-Series circuit breaker is a single-pole, 5A magnetic hydraulic toggle breaker designed for AC and DC marine electrical panels. It combines switching and circuit protection in one device and features a trip-free mechanism that cannot be held ON during a fault. Rated for 240V AC and 65V DC, with a white toggle actuator, stainless steel hardware, and operating temperature range from −40°C to +85°C. Meets ABYC requirements and is certified to CE, CSA, TUV, and UL 1077.
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$ 31.59
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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.