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 1841 M2 OLED Temperature Monitor is a digital monitoring unit designed to track temperature across up to 4 sensor locations, with a range of -40°C to 120°C. It operates on 7–70V DC and features an auto-dimming OLED display (55 x 28 mm), integrated 80 dB alarm, and an isolated 500 mA MOSFET relay for external circuit control. Supplied with 4 sensors (2 submersible PN 1820 and 2 high-temp PN 1821), IP66 rated and ABYC compliant for engine exhaust monitoring.
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$ 686.43
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1-2 weeks delivery time The 187-Series 120A Built-In Circuit Breaker from Blue Sea features single lever operation, is trip-free to prevent accidental closure after a trip, and has a self-trimming case that eliminates the need for mounting panels. It offers large clearance for up to 1/0 AWG lugs, recessed mounting holes for a clean appearance, and robust terminals for high torque connections.
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$ 144.73
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1-2 weeks delivery time The 187-Series 200A Built-In Circuit Breaker by Blue Sea combines circuit protection and switching capabilities in a compact, waterproof unit, ideal for marine environments. Its features include a clear lever operation, a "Trip Free" design that prevents holding the breaker on during faults, recessed mounting for a neat look, heavy gauge wire compatibility, robust terminal connections, and ignition protection for safe use on gasoline-powered boats, meeting SAE J1171 requirements.
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$ 189.30
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1-2 weeks delivery time The 187-Series 80A Built-In Circuit Breaker combines switching and circuit protection in a waterproof design, featuring a clear single lever operation and a "Trip Free" mechanism that cannot be held "ON" during fault conditions. It includes recessed mounting holes for a clean appearance, large clearance for heavy gauge wire lugs, robust terminals for high torque connections, and a large lever that indicates trip status, making it safe for installation on gasoline-powered boats.
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$ 144.73
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1-2 weeks delivery time The Blue Sea PowerPost 2001 is an insulated single-stud power termination post designed to securely connect multiple high-amperage conductors at a single point. It features a stainless steel 1/4"-20 stud with compact dimensions of 1/4" × 1-1/16", a reinforced thermoplastic base rated UL94 V0, and supports operation up to 48 V DC.
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$ 22.31
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1-2 weeks delivery time The Blue Sea PowerPost 2002 is an insulated single-stud power termination post designed to securely connect multiple high-amperage conductors in DC electrical systems. It features a stainless steel 5/16"-18 stud with compact 5/16" × 7/8" stud dimensions, a reinforced thermoplastic base rated UL94 V0, and supports operation up to 48 V DC.
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$ 23.56
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1-2 weeks delivery time The Blue Sea PowerPost 2003 is an insulated single-stud power termination post designed to securely terminate multiple high-amperage DC conductors at a single connection point. It features a stainless steel 3/8"-16 stud with 7/8" length, a reinforced thermoplastic base rated UL94 V0, and supports operation up to 48 V DC.
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$ 23.56
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1-2 weeks delivery time The Blue Sea Mini PowerPost 2010 is an insulated single-stud power termination post designed to securely connect multiple high-amperage DC conductors in a compact form factor. It features a stainless steel #10-32 stud with 5/8" length, a reinforced thermoplastic base rated UL94 V0, and supports operation up to 48 V DC.
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$ 15.68
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1-2 weeks delivery time The Blue Sea Mini PowerPost 2011 is an insulated single-stud power termination post designed to securely terminate multiple high-amperage DC conductors in compact electrical installations. It features a stainless steel 1/4"-20 stud with 3/4" length, a reinforced thermoplastic base rated UL94 V0, and supports operation up to 48 V DC.
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$ 14.67
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1-2 weeks delivery time The Blue Sea Dual PowerPost 2017 is a dual-stud termination post with two 3/8"-16 stainless steel studs, rated for 48 V DC, featuring a stud torque of 140 in-lb (15.82 Nm). It mounts using #10 (M5) screws and is supplied with one red and one black insulator for polarity identification.
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$ 38.14
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1-2 weeks delivery time The Blue Sea PowerPost Plus 2102 is a termination post with a 5/16"-18 × 3/4" stud, rated for 150 A DC and 48 V DC, featuring a tin-plated copper bus, #8-32 screw terminals for smaller wires, and a reinforced thermoplastic base.
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$ 50.32
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1-2 weeks delivery time The Blue Sea PowerPost Plus 2103 is a termination post with a 3/8"-16 × 3/4" stud, rated for 150 A DC and 48 V DC, featuring a tin-plated copper bus, #8-32 screw terminals for smaller wires, and a terminal stud torque of 140 in-lb (15.82 Nm).
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$ 44.54
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1-2 weeks delivery time The Blue Sea PowerBar 2104 is a high-current busbar with four 3/8"-16 terminal studs, rated for 600 A DC and 545 A AC, with a maximum voltage of 300 V AC / 48 V DC. It features a tin-plated copper bus (CDA 110 / UNS11000), a UL 94-V0 glass-reinforced thermoplastic base, and a terminal stud torque of 140 in-lb (15.82 Nm).
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$ 191.41
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1-2 weeks delivery time The Blue Sea MaxiBus 2105 is a busbar rated for 250 A continuous current, with two 5/16"-18 stainless steel studs and twelve #10-24 screw terminals, supporting 300 V AC / 48 V DC. It features a tin-plated copper bus (CDA 110 / UNS 11000), a UL 94-V0 glass-reinforced thermoplastic base, recommended screw torque of 23 in-lb (2.6 N·m), and recommended stud torque of 132 in-lb (14.91 N·m).
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$ 98.28
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1-2 weeks delivery time The Blue Sea PowerBar 2107 is a high-current busbar with eight 3/8"-16 terminal studs, rated for 600 A DC and 545 A AC, with a maximum voltage of 300 V AC / 48 V DC. It features a tin-plated copper bus (CDA 110 / UNS11000), a UL 94-V0 glass-reinforced thermoplastic base, and a terminal stud torque of 140 in-lb (15.82 Nm).
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$ 273.78
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1-2 weeks delivery time The Blue Sea MaxiBus 2126 is a busbar rated for 250 A continuous current, featuring six 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).
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$ 105.92
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1-2 weeks delivery time The Blue Sea Circuit Breaker 2129 is a 3 A thermal circuit breaker with manual push-button reset only, rated for 32 V DC, featuring panel mount 3/8-27 UNS, #8 screw terminals, and an interrupt capacity up to 3000 A at 14.7 V and 2500 A at 28 V. It is ignition protected, trip-free, and operates within -10 °C to 60 °C.
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$ 15.24
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1-2 weeks delivery time The Blue Sea Circuit Breaker 2130 is a 5 A thermal circuit breaker with manual push-button reset only, rated for 32 V DC, featuring panel mount 3/8-27 UNS, #8 screw terminals, and an interrupt capacity of 3000 A at 14.7 V and 2500 A at 28 V. It is trip-free, ignition protected, and operates within -10 °C to 60 °C.
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$ 14.58
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1-2 weeks delivery time The Blue Sea Circuit Breaker 2131 is a 7 A thermal circuit breaker with manual push-button reset only, rated for 32 V DC, featuring panel mount 3/8-27 UNS, #8 screw terminals, and an interrupt capacity of 3000 A at 14.7 V and 2500 A at 28 V. It is trip-free, ignition protected, and operates within -10 °C to 60 °C.
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$ 15.24
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1-2 weeks delivery time The Blue Sea Circuit Breaker 2132 is a 10 A thermal circuit breaker with manual push-button reset only, rated for 32 V DC, featuring panel mount 3/8-27 UNS, #8 screw terminals, and an interrupt capacity of 3000 A at 14.7 V and 2500 A at 28 V. It is trip-free, ignition protected, and operates within -10 °C to 60 °C.
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$ 15.24
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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.