Marine Circuit Protection

Marine Circuit Protection

Featured Brands

  • Blue Sea Systems® - 187-Series Circuit Breaker
    Blue Sea Systems®187-Series Circuit Breaker
    1
    # 5259550021
    187-Series Circuit Breaker by Blue Sea Systems®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...
    Combines switching and circuit protection into a single deviceClear, single lever operation
    $67.80 - $100.73
  • Blue Sea Systems® - ST Blade Fuse Block
    Blue Sea Systems®ST Blade Fuse Block
    1
    # 5259549992
    ST Blade Fuse Block by Blue Sea Systems®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...
    Accepts ring or snap fork type terminalsStrict quality control and thorough testing
    $35.50 - $55.01
  • Blue Sea Systems® - 285-Series Circuit Breaker
    Blue Sea Systems®285-Series Circuit Breaker
    0
    # 5259550014
    285-Series Circuit Breaker by Blue Sea Systems®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...
    Drop in replacement for 185-Series Circuit BreakersVisible reset lever shows open condition
    $48.66
  • Blue Sea Systems® - A-Series Blank Mounting Panel
    Blue Sea Systems®A-Series Blank Mounting Panel
    0
    # 5259549924
    A-Series Blank Mounting Panel by Blue Sea Systems®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...
    Slate gray matches standard panel color1/8" aluminum 5052 alloy
    $27.62 - $34.31
  • Blue Sea Systems® - A-Series Flat Rocker Circuit Breaker
    Blue Sea Systems®A-Series Flat Rocker Circuit Breaker
    0
    # 5259550878
    A-Series Flat Rocker Circuit Breaker by Blue Sea Systems®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured...
    Color actuator indicates "OFF" position"Trip Free" design cannot be held "ON" during fault current condition
    $26.52 - $38.07
  • Blue Sea Systems® - A-Series Raised Rocker Circuit Breaker
    Blue Sea Systems®A-Series Raised Rocker Circuit Breaker
    0
    # 5259550913
    A-Series Raised Rocker Circuit Breaker by Blue Sea Systems®. Double Pole. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of...
    Color actuator indicates "OFF" position"Trip Free" design cannot be held "ON" during fault current condition
    $37.65
  • Blue Sea Systems® - A-Series Restricted Off Flat Rocker Circuit Breaker
    Blue Sea Systems®A-Series Restricted Off Flat Rocker Circuit Breaker
    0
    # 5259550566
    A-Series Restricted Off Flat Rocker Circuit Breaker by Blue Sea Systems®. Single Pole. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of...
    Rocker actuator is flush in the "ON" position, eliminating the risk of accidential switchingColor actuator indicates "OFF" position
    $27.78
  • Blue Sea Systems® - A-Series Toggle Circuit Breaker
    Blue Sea Systems®A-Series Toggle Circuit Breaker
    0
    # 5259549997
    A-Series Toggle Circuit Breaker by Blue Sea Systems®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...
    Strict quality control and thorough testingOffered at a reasonable price
    $18.62 - $36.51
  • Blue Sea Systems® - C-Series Flat Rocker Circuit Breaker
    Blue Sea Systems®C-Series Flat Rocker Circuit Breaker
    0
    # 5259550483
    C-Series Flat Rocker Circuit Breaker by Blue Sea Systems®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured...
    Color actuator indicates "OFF" positionProvides overcurrent protection for inverters, bow thrusters, and windlasses
    $32.96 - $169.99
  • Blue Sea Systems® - C-Series White Toggle Circuit Breaker
    Blue Sea Systems®C-Series White Toggle Circuit Breaker
    0
    # 5259550779
    C-Series White Toggle Circuit Breaker by Blue Sea Systems®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....
    Strict quality control and thorough testingOffered at a reasonable price
    $38.66 - $159.06
  • Blue Sea Systems® - COTS Military Grade A-Series Circuit Breaker
    Blue Sea Systems®COTS Military Grade A-Series Circuit Breaker
    0
    # 5259550917
    COTS Military Grade A-Series Circuit Breaker by Blue Sea Systems®. May be suitable for use when military specifications are required under CFR 46. This top-grade product is expertly made in compliance with stringent industry standards...
    Strict quality control and thorough testingOffered at a reasonable price
    $75.61 - $77.10
  • Blue Sea Systems® - Marine Grade Short Stop Circuit Breaker
    Blue Sea Systems®Marine Grade Short Stop Circuit Breaker
    0
    # 5259550419
    Marine Grade Short Stop Circuit Breaker by Blue Sea Systems®. Use a Circuit Breaker instead of a Fuse. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design...
    Corrosion resistant materials to withstand harsh environmentsIP64 water resistant boot protects against dust and splashing water
    $10.66 - $11.29
  • Blue Sea Systems® - Medium Duty Push Button Reset Only Circuit Breaker
    Blue Sea Systems®Medium Duty Push Button Reset Only Circuit Breaker
    0
    # 5259550538
    Medium Duty Push Button Reset Only Circuit Breaker by Blue Sea Systems®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of...
    WeatherproofCan be used as Main, Branch, or 24 hour circuit protection
    $46.39 - $48.21
  • Blue Sea Systems® - Push Button Reset Only Circuit Breaker Boot
    Blue Sea Systems®Push Button Reset Only Circuit Breaker Boot
    0
    # 5259550038
    Push Button Reset Only Circuit Breaker Boot by Blue Sea Systems®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....
    Replaces standard mounting nut for mounting on Thermal Push Button Circuit Breakers onlyUV resistant material resists discoloration and cracking
    $5.10
  • Blue Sea Systems® - Push Button Reset Only Quick Connect Circuit Breaker
    Blue Sea Systems®Push Button Reset Only Quick Connect Circuit Breaker
    0
    # 5259551017
    Push Button Reset Only Quick Connect Circuit Breaker by Blue Sea Systems®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of...
    Branch circuit breakers (can also be used for 24-hour circuit protection)Quick connect terminal style circuit breakers are incorporated into Blue Sea Systems WeatherDeck Waterproof Circuit Breaker Panels, Dual Battery Bank Main Distribution Panels, and 360 Distribution Panels
    $6.68 - $6.89
  • Blue Sea Systems® - Push Button Reset Only Screw Terminal Circuit Breaker
    Blue Sea Systems®Push Button Reset Only Screw Terminal Circuit Breaker
    0
    # 5259550587
    Push Button Reset Only Screw Terminal Circuit Breaker by Blue Sea Systems®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of...
    Branch circuit breakers (can also be used for 24-hour circuit protection)Quick connect terminal style circuit breakers are incorporated into Blue Sea Systems WeatherDeck Waterproof Circuit Breaker Panels, Dual Battery Bank Main Distribution Panels, and 360 Distribution Panels
    $6.92
  • Blue Sea Systems® - ST CLB Circuit Breaker Block
    Blue Sea Systems®ST CLB Circuit Breaker Block
    0
    # 5259550571
    ST CLB Circuit Breaker Block by Blue Sea Systems®. The advantage of a resettable circuit breaker over a fuse is well known however people find circuit breakers more expensive and difficult to install. The ST CLB Circuit Breaker Block...
    Quick connect clips allow circuit breakers to snap easily into placeTin-plated copper busses and screw terminals
    $45.16 - $98.49
  • Cole Hersee® - 12 V Reset Cycling Thermal Circuit Breaker
    Cole Hersee®12 V Reset Cycling Thermal Circuit Breaker
    0
    # 4385515981
    12 V Reset Cycling Thermal Circuit Breaker by Cole Hersee®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $17.65 - $19.74
  • Blue Sea Systems® - 60 Label Set
    Blue Sea Systems®60 Label Set
    0
    # 5259550903
    60 Label Set by Blue Sea Systems®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...
    60 common DC labelsReinforced, weatherproof material
    $12.32
  • Blue Sea Systems® - ANL Fuse Block with Insulating Cover
    Blue Sea Systems®ANL Fuse Block with Insulating Cover
    0
    # 5259550679
    ANL Fuse Block with Insulating Cover by Blue Sea Systems®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured...
    Accepts 5/16" (M8) ring terminalsFor use on systems up to 32 Volts DC
    $33.58 - $51.43
  • Blue Sea Systems® - Class T Fuse Block with Insulating Cover
    Blue Sea Systems®Class T Fuse Block with Insulating Cover
    0
    # 5259550892
    Class T Fuse Block with Insulating Cover by Blue Sea Systems®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....
    Strict quality control and thorough testingOffered at a reasonable price
    $51.43 - $74.13
  • Blue Sea Systems® - MRBF Surface Mount Fuse Block
    Blue Sea Systems®MRBF Surface Mount Fuse Block
    0
    # 5259550115
    MRBF Surface Mount Fuse Block by Blue Sea Systems®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...
    Accommodates three MRBF fuses for consolidated high amperage circuit protectionClip-on insulating cover satisfies ABYC/USCG insulation requirements
    $50.21 - $59.31
  • Blue Sea Systems® - ST Blade Battery Terminal Mount Fuse Block
    Blue Sea Systems®ST Blade Battery Terminal Mount Fuse Block
    0
    # 5259550821
    ST Blade Battery Terminal Mount Fuse Block by Blue Sea Systems®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....
    Mounts on the battery terminal studScrew terminals for securing wires
    $30.33 - $33.52
  • Blue Sea Systems® - ST Blade Compact Fuse Blocks
    Blue Sea Systems®ST Blade Compact Fuse Blocks
    0
    # 5259549967
    ST Blade Compact Fuse Blocks by Blue Sea Systems®. Provides surface mount circuit protection for ATO™/ATC™ Fuses in a compact footprint. This top-grade product is expertly made in compliance with stringent industry standards to...
    Ignition protected when cover is secure -meets ISO 8846 and SAE J1171 for use in a gasoline engine compartmentSingle side design allows wire entry from one side to minimize footprint
    $36.91 - $44.47
  • Blue Sea Systems® - ST Blade Water-Resistant Fuse Block with Cover
    Blue Sea Systems®ST Blade Water-Resistant Fuse Block with Cover
    0
    # 5259549870
    ST Blade Water-Resistant Fuse Block with Cover by Blue Sea Systems®. Provides water-resistant circuit protection for ATO/ATC fuses & circuit breakers in a compact footprint. allows for simple wiring with standard toolsthan 4 loads are...
    Water-resistant design with standard ring or spade type terminalsAccepts a wide range of wire sizes
    $36.39 - $38.99
  • Blue Sea Systems® - ST Glass 6 Circuit Fuse Block
    Blue Sea Systems®ST Glass 6 Circuit Fuse Block
    0
    # 5259550993
    ST Glass 6 Circuit Fuse Block by Blue Sea Systems®. Innovative design allows for labeling, spare fuse storage, and easy fuse removal. This top-grade product is expertly made in compliance with stringent industry standards to offer a...
    Clear insulating cover with label recesses for accept Large Format LabelsCover insulates all conductive parts, satisfying ABYC/USCG requirements and storing spare fuses
    $34.52 - $40.63
  • Blue Sea Systems® - Terminal Block
    Blue Sea Systems®Terminal Block
    0
    # 5259550211
    Terminal Block by Blue Sea Systems®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...
    Closed back design completely insulates power from the mounting surfaceEach screw pair is one isolated circuit
    $4.73 - $33.18
  • Blue Sea Systems® - Terminal Block Jumper
    Blue Sea Systems®Terminal Block Jumper
    0
    # 5259550981
    Terminal Block Jumper by Blue Sea Systems®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...
    Jumpers allow creation of common circuits on independent connectors5 in Retail Pack
    $5.13
  • Sea Dog® - 20 A AGC Fuse Terminal Block
    Sea Dog®20 A AGC Fuse Terminal Block
    0
    # 4909875424
    20 A AGC Fuse Terminal Block by Sea Dog®. Combination multiple gang fuse blocks with brass fuse clips and screws. Can be used with 1/4" x 1-1/4" fuses for circuit distribution and also features separate grounding terminal bar. Designed...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $22.12 - $30.07
  • Sea Dog® - 7/16" AGC Black Fuse Holder with Screw-On Cap
    Sea Dog®7/16" AGC Black Fuse Holder with Screw-On Cap
    0
    # 4385515975
    7/16" AGC Black Fuse Holder with Screw-On Cap by Sea Dog®. The panel mounted AGC Fuse Holder provides over-current protection in electrical circuits. Solder terminal. Accepts standard 1/4" x 1-1/4" AGC Style Fuses 444101-444115, and...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $1.24 - $4.02




Regular marine circuit protection is as critical to your boat’s electrical system as costly if ignored. Just like in your home or car, the electrical wiring and components in your boat need protection from current overflow and short circuits. The excess current causes excessive heat generation, which can result in catastrophic electrical fires and/or serious damage. The smaller the wire is, the more heat will be produced with the same amount of current. The primary job of circuit protection devices like fuses and circuit breakers is to stop the heat created during circuit overload from going to your boat’s appliances and devices, thus preventing equipment from overheating and keeping you safe.

On our digital shelves, we handpick top-notch circuit protection devices such as circuit breakers and fuses specially designed for maritime use. Marine circuit breakers and fuses will keep your boat’s electrical circuit reliably protected in the event of overcurrent or overload. They’re intended for the same purpose but use different ways to achieve it. In the event of a fault, a circuit breaker will break the link and prevent all current from flowing through the wire. Unlike a fuse that blows if the current exceeds and needs to be replaced, a circuit breaker can be used again by resetting it once it has tripped. However, fuses generally are more budget-friendly. We also have fuse blocks used to distribute power in your boat’s electrical system as well as fuse holders providing a way to keep, protect, and mount fuses. Plus, you’ll find a wide range of top-grade circuit breaker and fuse accessories that will come in handy to ensure their optimum functionality.

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