Marine Circuit Protection

Marine Circuit Protection

Featured Brands

  • Blue Sea Systems® - Panel Mount AGC/MDL Fuse Holder Replacement Cap
    Blue Sea Systems®Panel Mount AGC/MDL Fuse Holder Replacement Cap (5022)
    0
    # mpn4947148533
    Panel Mount AGC/MDL Fuse Holder Replacement Cap 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 cap for 5021Strict quality control and thorough testing
    $2.99
  • Blue Sea Systems® - ST Blade Battery Terminal Mount Fuse Block
    Blue Sea Systems®ST Blade Battery Terminal Mount Fuse Block (5023)
    0
    # mpn4947148990
    ST Blade Battery Terminal Mount Fuse Block (5023) 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....
    Easy to install 4 ATO™/ATC™ fused circuitsMounts on the battery terminal stud
    $31.63
  • Blue Sea Systems® - ST Blade Battery Terminal Mount Fuse Block Kit
    Blue Sea Systems®ST Blade Battery Terminal Mount Fuse Block Kit (5024)
    0
    # mpn4947148739
    ST Blade Battery Terminal Mount Fuse Block Kit (5024) by Blue Sea Systems®. Easily add 4 fused circuits to the terminal of a battery Provides power to new accessories in your boat or vehicle. This top-grade product is expertly made in...
    Mounts on the battery terminal studScrew terminals for securing wires
    $34.22
  • Blue Sea Systems® - ST Blade Compact Fuse Blocks
    Blue Sea Systems®ST Blade Compact Fuse Blocks (5045)
    0
    # mpn4947148916
    ST Blade Compact Fuse Blocks (5045) by Blue Sea Systems®. With 4 Circuits. Provides surface mount circuit protection for ATO™/ATC™ Fuses in a compact footprint. This top-grade product is expertly made in compliance with stringent...
    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
    $38.48
  • Blue Sea Systems® - ST Blade Compact Fuse Blocks
    Blue Sea Systems®ST Blade Compact Fuse Blocks (5046)
    0
    # mpn4947148883
    ST Blade Compact Fuse Blocks (5046) by Blue Sea Systems®. With 8 Circuits. Provides surface mount circuit protection for ATO™/ATC™ Fuses in a compact footprint. This top-grade product is expertly made in compliance with stringent...
    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
    $45.41
  • Blue Sea Systems® - ST Blade Fuse Block
    Blue Sea Systems®ST Blade Fuse Block (5037)
    0
    # mpn4947148945
    ST Blade Fuse Block (5037) by Blue Sea Systems®. With 6 Independent Circuits. 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...
    Corrosion resistant, tin-plated copper fuse clips reduce heat and improve the efficiency of the electrical systemAccepts ring or snap fork type terminals
    $35.50
  • Blue Sea Systems® - ST Blade Fuse Block
    Blue Sea Systems®ST Blade Fuse Block (5033)
    0
    # mpn4947148915
    ST Blade Fuse Block (5033) by Blue Sea Systems®. With 6 Circuits. Consolidates branch circuits and in-line fuses. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a...
    Positive distribution bus with #10-32 studCan be used for 24-hour circuits
    $35.50
  • Blue Sea Systems® - ST Blade Fuse Block
    Blue Sea Systems®ST Blade Fuse Block (5034)
    0
    # mpn4947148895
    ST Blade Fuse Block (5034) by Blue Sea Systems®. With 12 Circuits. Consolidates branch circuits and in-line fuses. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a...
    Positive distribution bus with #10-32 studCan be used for 24-hour circuits
    $46.43
  • Blue Sea Systems® - ST Blade Fuse Block with Cover
    Blue Sea Systems®ST Blade Fuse Block with Cover (5029)
    0
    # mpn4947148994
    ST Blade Fuse Block with Cover (5029) by Blue Sea Systems®. With 12 Circuits. Consolidates branch circuits and in-line fuses. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a...
    Positive distribution bus with #10-32 studCan be used for 24-hour circuits
    $50.26
  • Blue Sea Systems® - ST Blade Fuse Block with Cover
    Blue Sea Systems®ST Blade Fuse Block with Cover (5028)
    0
    # mpn4947148941
    ST Blade Fuse Block with Cover (5028) by Blue Sea Systems®. With 6 Circuits. Consolidates branch circuits and in-line fuses. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a...
    Positive distribution bus with #10-32 studCan be used for 24-hour circuits
    $39.00
  • Blue Sea Systems® - ST Blade Fuse Block with Cover
    Blue Sea Systems®ST Blade Fuse Block with Cover (5035)
    0
    # mpn4947148893
    ST Blade Fuse Block with Cover (5035) by Blue Sea Systems®. With 6 Independent Circuits. 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...
    Corrosion resistant, tin-plated copper fuse clips reduce heat and improve the efficiency of the electrical systemClear insulating cover with label recesses accepts Small Format Labels
    $39.00
  • Blue Sea Systems® - ST Blade Fuse Block with Negative Bus
    Blue Sea Systems®ST Blade Fuse Block with Negative Bus (5031)
    0
    # mpn4947148747
    ST Blade Fuse Block with Negative Bus (5031) by Blue Sea Systems®. With 12 Circuits. Consolidates branch circuits and in-line fuses. This top-grade product is expertly made in compliance with stringent industry standards to offer a...
    Positive distribution bus with #10-32 studCan be used for 24-hour circuits
    $51.93
  • Blue Sea Systems® - ST Blade Fuse Block with Negative Bus
    Blue Sea Systems®ST Blade Fuse Block with Negative Bus (5030)
    0
    # mpn4947148551
    ST Blade Fuse Block with Negative Bus (5030) by Blue Sea Systems®. With 6 Circuits. Consolidates branch circuits and in-line fuses. This top-grade product is expertly made in compliance with stringent industry standards to offer a...
    Positive distribution bus with #10-32 studCan be used for 24-hour circuits
    $41.79
  • Blue Sea Systems® - ST Blade Fuse Block with Negative Bus & Cover
    Blue Sea Systems®ST Blade Fuse Block with Negative Bus & Cover (5025)
    1
    # mpn4947148997
    ST Blade Fuse Block with Negative Bus & Cover (5025) by Blue Sea Systems®. With 6 Circuits. Consolidates branch circuits and in-line fuses. This top-grade product is expertly made in compliance with stringent industry standards to offer...
    Positive distribution bus with #10-32 studCan be used for 24-hour circuits
    $44.60
  • Blue Sea Systems® - ST Blade Fuse Block with Negative Bus & Cover
    Blue Sea Systems®ST Blade Fuse Block with Negative Bus & Cover (5026)
    0
    # mpn4947148746
    ST Blade Fuse Block with Negative Bus & Cover (5026) by Blue Sea Systems®. With 12 Circuits. Consolidates branch circuits and in-line fuses. This top-grade product is expertly made in compliance with stringent industry standards to...
    Positive distribution bus with #10-32 studCan be used for 24-hour circuits
    $55.81
  • Blue Sea Systems® - ST Blade Split Bus Fuse Block
    Blue Sea Systems®ST Blade Split Bus Fuse Block (5032)
    0
    # mpn4947148882
    ST Blade Split Bus Fuse Block by Blue Sea Systems®. Split Bus Fuse Block with ground for use when a mix of switched and 24-hour circuits are desired in the same block. This top-grade product is expertly made in compliance with stringent...
    Provides two isolated groups of six ATO™/ATC™ circuitsFor use with either two isolated batteries or with a single battery providing a mix of 24 hour and switched circuits
    $71.24
  • Blue Sea Systems® - ST Blade Water-Resistant Fuse Block with Cover
    Blue Sea Systems®ST Blade Water-Resistant Fuse Block with Cover (5056)
    0
    # mpn4947148934
    ST Blade Water-Resistant Fuse Block with Cover (5056) 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...
    Water-resistant design with standard ring or spade type terminalsAccepts a wide range of wire sizes
    $36.39
  • Blue Sea Systems® - ST Blade Water-Resistant Fuse Block with Manual Cover
    Blue Sea Systems®ST Blade Water-Resistant Fuse Block with Manual Cover (5056100)
    0
    # mpn4947148613
    ST Blade Water-Resistant Fuse Block with Manual Cover (5056100) 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...
    Water-resistant design with standard ring or spade type terminalsAccepts a wide range of wire sizes
    $38.99
  • Blue Sea Systems® - ST Glass 6 Circuit Fuse Block with Cover
    Blue Sea Systems®ST Glass 6 Circuit Fuse Block with Cover (5018)
    0
    # mpn4947148943
    ST Glass 6 Circuit Fuse Block with Cover (5018) 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...
    Clear insulating cover with label recesses for accept Large Format LabelsCover insulates all conductive parts, satisfying ABYC/USCG requirements and storing spare fuses
    $35.02
  • Blue Sea Systems® - ST Glass 6 Circuit Fuse Block with Negative Bus & Cover
    Blue Sea Systems®ST Glass 6 Circuit Fuse Block with Negative Bus & Cover (5015)
    0
    # mpn4947148993
    ST Glass 6 Circuit Fuse Block with Negative Bus & Cover (5015) 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...
    Clear insulating cover with label recesses for accept Large Format LabelsCover insulates all conductive parts, satisfying ABYC/USCG requirements and storing spare fuses
    $41.23
  • Blue Sea Systems® - SafetyHub 100 Fuse Block
    Blue Sea Systems®SafetyHub 100 Fuse Block (7725)
    0
    # mpn4947149253
    SafetyHub 100 Fuse Block by Blue Sea Systems®. The SafetyHub 100 combines an ignition protected fuse block and an integrated connecting plug. It is safe for use on gasoline powered boats, reduces wiring connections, and consolidates up...
    Three 30A−200A MIDI™/AMI™ fuses [sold separately] ideal for high-amp circuits including panel feeds, windlasses, and stereo amplifiersFour 1A−20A ATO™/ATC™ fuses [sold separately] ideal for circuits including bilge pumps, alarms, and clock memory
    $85.82
  • Blue Sea Systems® - SafetyHub 150 Fuse Block
    Blue Sea Systems®SafetyHub 150 Fuse Block (7748)
    0
    # mpn4947149334
    SafetyHub 150 Fuse Block by Blue Sea Systems®. An ignition protected fuse block with screw termination safe for use on gasoline powered boats. This top-grade product is expertly made in compliance with stringent industry standards to...
    Accepts four AMI™ or MIDI™ Fuses for high-amp circuits up to 200AAccepts six ATO™ or ATC™ Fuses for circuits up to 30A including bilge pumps, electronics and lights
    $133.61
  • Blue Sea Systems® - Terminal Block
    Blue Sea Systems®Terminal Block (2508)
    0
    # mpn4947148904
    Terminal Block (2508) by Blue Sea Systems®. 8 Circuit. Amperage: 30A. 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....
    Closed back design completely insulates power from the mounting surfaceEach screw pair is one isolated circuit
    $12.97
  • Blue Sea Systems® - Terminal Block
    Blue Sea Systems®Terminal Block (2408)
    0
    # mpn4947148860
    Terminal Block (2408) by Blue Sea Systems®. 8 Circuit. Amperage: 20A. 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....
    Closed back design completely insulates power from the mounting surfaceEach screw pair is one isolated circuit
    $9.46
  • Blue Sea Systems® - Terminal Block
    Blue Sea Systems®Terminal Block (2404)
    0
    # mpn4947148852
    Terminal Block (2404) by Blue Sea Systems®. 4 Circuit. Amperage: 20A. 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....
    Closed back design completely insulates power from the mounting surfaceEach screw pair is one isolated circuit
    $5.98
  • Blue Sea Systems® - Terminal Block
    Blue Sea Systems®Terminal Block (2410)
    0
    # mpn4947148849
    Terminal Block (2410) by Blue Sea Systems®. 10 Circuit. Amperage: 20A. 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....
    Closed back design completely insulates power from the mounting surfaceEach screw pair is one isolated circuit
    $12.81
  • Blue Sea Systems® - Terminal Block
    Blue Sea Systems®Terminal Block (2602)
    0
    # mpn4947148786
    Terminal Block (2602) by Blue Sea Systems®. 2 Circuit. Amperage: 65A. 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....
    Closed back design completely insulates power from the mounting surfaceEach screw pair is one isolated circuit
    $11.01
  • Blue Sea Systems® - Terminal Block
    Blue Sea Systems®Terminal Block (2502)
    0
    # mpn4947148785
    Terminal Block (2502) by Blue Sea Systems®. 2 Circuit. Amperage: 30A. 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....
    Closed back design completely insulates power from the mounting surfaceEach screw pair is one isolated circuit
    $6.41
  • Blue Sea Systems® - Terminal Block
    Blue Sea Systems®Terminal Block (2510)
    0
    # mpn4947148778
    Terminal Block (2510) by Blue Sea Systems®. 10 Circuit. Amperage: 30A. 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....
    Closed back design completely insulates power from the mounting surfaceEach screw pair is one isolated circuit
    $14.72
  • Blue Sea Systems® - Terminal Block
    Blue Sea Systems®Terminal Block (2610)
    0
    # mpn4947148726
    Terminal Block (2610) by Blue Sea Systems®. 10 Circuit. Amperage: 65A. 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....
    Closed back design completely insulates power from the mounting surfaceEach screw pair is one isolated circuit
    $33.18




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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