Electrical - Circuit Breakers
Marine circuit breakers are essential components designed to protect your boat's electrical systems from overloads, short circuits, and potential equipment damage. Engineered for demanding freshwater and saltwater environments, today's marine circuit breakers feature durable, corrosion-resistant construction and reliable resettable protection to help maintain safe and efficient power distribution onboard. From surface-mount breakers and panel-mount models to high-amperage protection for batteries, trolling motors, windlasses, pumps, and marine electronics, these components provide dependable protection for a wide range of vessel applications. Marine-rated circuit breakers are built to withstand vibration, moisture, and harsh conditions while delivering consistent performance when your electrical system needs it most. Whether you're installing new equipment, upgrading your electrical system, or replacing existing components, the right circuit breaker helps protect valuable onboard electronics and improve overall reliability. Featuring premium products from trusted marine manufacturers, our Electrical – Circuit Breakers collection delivers the quality and performance serious boaters expect. Browse our selection today and let our knowledgeable team help you choose the ideal circuit breaker for your vessel.
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Sort by:
- Featured
- Most relevant
- Best selling
- Alphabetically, A-Z
- Alphabetically, Z-A
- Price, low to high
- Price, high to low
- Date, old to new
- Date, new to old
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Vendor:Blue Sea Systems
Blue Sea 7049 200 Amp Panel Mount 187 Series Circuit Breaker [7049]
- £90.73
£123.73- £90.73
- Unit price
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7049 200 Amp Panel Mount 187 Series Circuit BreakerFeatures: Combines switching and circuit protection into a single device* Clear, single lever operation "Trip Free" design cannot be held "ON" during fault current condition Waterproof Recessed mounting holes for clean appearance Large Clearance around terminal...- £90.73
£123.73- £90.73
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Vendor:Blue Sea Systems
Blue Sea 7156 Short Stop Circuit Breaker - 40A [7156]
- £8.24
£10.49- £8.24
- Unit price
- / per
7156 Short Stop Circuit Breaker - 40A Corrosion Resistant Material IP 64 Water Resistant Boot Push to Reset Only Interrupt Capacity: 2,500A @ 28VDC Red insulating boot included in retail package Specifications Amperage: 40A DC Maximum Voltage: 28V DC Interrupt Capacity: 2500A @ 28V...- £8.24
£10.49- £8.24
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Vendor:Blue Sea Systems
Blue Sea 7140 187 - Series Thermal Circuit Breaker - 60Amp [7140]
- £68.98
£94.48- £68.98
- Unit price
- / per
187 - Series Thermal Circuit Breakers - Surface Mount60 Amp Circuit BreakerPN: 7140Features: Combines switching and circuit protection into a single device All components meet SAE J1171 external ignition protection requirements Clear, single lever operation "Trip Free" design cannot be held "ON" during fault current...- £68.98
£94.48- £68.98
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Vendor:Blue Sea Systems
Blue Sea 7038 187 - Series Thermal Circuit Breaker - 40A [7038]
- £68.98
£94.48- £68.98
- Unit price
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187 - Series Thermal Circuit Breakers - Panel Mount40 Amp Circuit BreakerPN: 7038Features: Combines switching and circuit protection into a single device All components meet SAE J1171 external ignition protection requirements Clear, single lever operation "Trip Free" design cannot be held "ON" during fault current...- £68.98
£94.48- £68.98
- Unit price
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Vendor:Blue Sea Systems
Blue Sea 8089 C-Series Plug Panel Kit [8089]
- £4.49
£5.99- £4.49
- Unit price
- / per
Panel Plug Kit Includes circuit breaker mounting screws, C-Series panel plug, LED plug and blank label Designed for C-Series Circuit Breakers Heavy 1/8" aluminum 5052 Alloy Two-part polyurethane slate gray finish Accepts standard Blue Sea Systems' backlight labels Accepts standard Blue Sea Systems' "ON"...- £4.49
£5.99- £4.49
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Vendor:Blue Sea Systems
Blue Sea 7401 Single Pole Small Case 2" Flat Rocker Circuit Breaker - 8 Amp [7401]
- £22.49
£29.99- £22.49
- Unit price
- / per
Single Pole Small Case 2" Flat Rocker Circuit BreakerPN: 7401Amperage: 8 AmpFeatures: Color actuator indicates "OFF" position "Trip Free" design cannot be held "ON" during fault current condition Specifications Circuit Breaker Type Magnetic Hydraulic - Trip Free Maximum Voltage 250 Volts AC / 80 Volts...- £22.49
£29.99- £22.49
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Vendor:Blue Sea Systems
Blue Sea 7415 A-Series Flat Rocker Circuit Breaker - Double Pole - 32A [7415]
- £42.74
£57.74- £42.74
- Unit price
- / per
A-Series Flat Rocker Circuit Breaker - Double Pole - 32AFeatures: Color actuator indicates "OFF" position "Trip Free" design cannot be held "ON" during fault current condition International ON/OFF symbols support vertical or horizontal mounting Specifications: Amperage : 32A AC / 32A DC Actuator Style:...- £42.74
£57.74- £42.74
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Vendor:Blue Sea Systems
Blue Sea 7044 187 - Series Thermal Circuit Breaker - 100Amp [7044]
- £68.98
£94.48- £68.98
- Unit price
- / per
187 - Series Thermal Circuit Breakers - Panel Mount100 Amp Circuit BreakerPN: 7044Features: Combines switching and circuit protection into a single device All components meet SAE J1171 external ignition protection requirements Clear, single lever operation "Trip Free" design cannot be held "ON" during fault current...- £68.98
£94.48- £68.98
- Unit price
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Vendor:Blue Sea Systems
Blue Sea 7153 Short Stop Circuit Breaker - 20A [7153]
- £8.24
£10.49- £8.24
- Unit price
- / per
7153 Short Stop Circuit Breaker - 20A Corrosion Resistant Material IP 64 Water Resistant Boot Push to Reset Only Interrupt Capacity: 2,500A @ 28VDC Red insulating boot included in retail package Specifications Amperage: 20A DC Maximum Voltage: 28V DC Interrupt Capacity: 2500A @ 28V...- £8.24
£10.49- £8.24
- Unit price
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Vendor:Blue Sea Systems
Blue Sea 7427 Single Pole Small Case 2" Slot Reset Rocker Circuit Breaker - 10 Amp [7427]
- £23.24
£31.49- £23.24
- Unit price
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Single Pole Small Case 2" Slot Reset Rocker Circuit Breaker - 10 AmpPN: 7427Amperage: 10 AmpFeatures: Color actuator indicates "OFF" position "Trip Free" design cannot be held "ON" during fault current condition Specifications Circuit Breaker Type Magnetic Hydraulic - Trip Free Maximum Voltage...- £23.24
£31.49- £23.24
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Vendor:Blue Sea Systems
Blue Sea 7250 C-Series Toggle Single Pole - 100A [7250]
- £32.24
£43.49- £32.24
- Unit price
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C-Series Toggle Single PolePN: 7250Poles: 1Color: WhiteAmperage: 100AFeatures: Provides overcurrent protection for inverters, bow thrusters, and windlasses Combines switching and circuit protection into a single device "Trip Free" - cannot be held closed after trip WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is...- £32.24
£43.49- £32.24
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Vendor:Blue Sea Systems
Blue Sea 7428 Single Pole Small Case 2" Slot Reset Rocker Circuit Breaker - 15 Amp [7428]
- £23.24
£31.49- £23.24
- Unit price
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Single Pole Small Case 2" Slot Reset Rocker Circuit BreakerPN: 7428Amperage: 15 AmpFeatures: Color actuator indicates "OFF" position "Trip Free" design cannot be held "ON" during fault current condition Specifications Circuit Breaker Type Magnetic Hydraulic - Trip Free Maximum Voltage 250 Volts AC / 80...- £23.24
£31.49- £23.24
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Vendor:Blue Sea Systems
Blue Sea 7459 UL-489 Circuit Breaker - 50A Flat Rocker [7459]
- £34.49
£46.49- £34.49
- Unit price
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7459 UL-489 Circuit Breaker - 50A Flat RockerSuitable for use when UL-489 specifications are required (Navy, Army, or Coast Guard vessels, and other vessels covered under CFR 46).Specifications: Amperage: 50A AC Actuator Style: Flat Rocker Poles: 1 Maximum Voltage: 240V AC Circuit Breaker Type:...- £34.49
£46.49- £34.49
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Vendor:Blue Sea Systems
Blue Sea 7068 ATO/ATC-Style Low Profile Circuit Breaker - 2-Pack - 30 Amp [7068]
- £6.74
£8.99- £6.74
- Unit price
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7068 ATO/ATC-Style Low Profile Circuit Breaker - 2-Pack - 30 AmpUse a manually resettable circuit breaker instead of an ATO or ATC fuse.Features: Drop in replacement for ATO and ATC blade style fuses Manual push button reset complies with ABYC circuit protection requirements Compatible...- £6.74
£8.99- £6.74
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Vendor:Blue Sea Systems
Blue Sea 7312 COTS Military Grade A-Series 15 Amp [7312]
- £65.24
£88.48- £65.24
- Unit price
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7312 COTS Military Grade A-Series 15 AmpMay be suitable for use when military specifications are required under CFR 46.Specifications: Amperage: 15A Actuator Style: Metal Toggle Poles: 2 Max Voltage: 277V AC, 65V DC Circuit Breaker Type: Magnetic Hydraulic - Trip Free Interrupt Capacity: 1500...- £65.24
£88.48- £65.24
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Vendor:Blue Sea Systems
Blue Sea Push Button Reset Only Screw Terminal Circuit Breaker - 7 Amps [2131]
- £6.74
£8.24- £6.74
- Unit price
- / per
Push Button Reset Only Screw Terminal Circuit Breaker - 7 AmpsFeatures: 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...- £6.74
£8.24- £6.74
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Vendor:Blue Sea Systems
Blue Sea 7235 A-Series Double Pole Toggle - 15AMP - White [7235]
- £39.74
£53.99- £39.74
- Unit price
- / per
7235 A-Series Double Pole Toggle - 15AMP - WhitePoles: 2Color: WhiteAmperage: 15AMPFeatures: Meets American Boat and Yacht Council (ABYC) standards UL 1077 recognized, TUV certified, CE marked for Europe and CSA certified for Canada The industry standard circuit breaker for Blue Sea Systems electrical...- £39.74
£53.99- £39.74
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Vendor:Blue Sea Systems
Blue Sea Push Button Reset Only Screw Terminal Circuit Breaker - 15 Amps [2133]
- £6.74
£8.24- £6.74
- Unit price
- / per
Push Button Reset Only Screw Terminal Circuit Breaker - 15 AmpsFeatures: 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...- £6.74
£8.24- £6.74
- Unit price
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Vendor:Blue Sea Systems
Blue Sea 5054 ST CLB Circuit Breaker Block - 12 Position w/Negative Bus [5054]
- £89.23
£121.48- £89.23
- Unit price
- / per
ST CLB Circuit Breaker Block - 12 Position w/Negative BusFeatures Quick connect clips allow circuit breakers to snap easily into place Tin-plated copper busses and screw terminals Clear insulating cover with square format label recesses, satisfies ABYC/USCG insulation requirements Easy to open clip on...- £89.23
£121.48- £89.23
- Unit price
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Vendor:Blue Sea Systems
Blue Sea 7230 AC/DC Single Pole Magnetic World Circuit Breaker - 50AMP [7230]
- £17.24
£23.24- £17.24
- Unit price
- / per
7230 AC/DC Single Pole Magnetic World Circuit Breaker - 50AMPC / DC Single Pole Magnetic World Circuit BreakerThe World Circuit Breaker meets all American Boat and Yacht Council (ABYC) Standards, is UL 1077 Recognized, TUV Certified, CE marked for Europe, and CSA Certified for...- £17.24
£23.24- £17.24
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![Blue Sea 7156 Short Stop Circuit Breaker - 40A [7156]](http://www.dbmarinesupplies.com/cdn/shop/files/68721XL_533x.jpg?v=1682711030)
![Blue Sea 7153 Short Stop Circuit Breaker - 20A [7153]](http://www.dbmarinesupplies.com/cdn/shop/files/68718XL_533x.jpg?v=1682710999)
![Blue Sea 5054 ST CLB Circuit Breaker Block - 12 Position w/Negative Bus [5054]](http://www.dbmarinesupplies.com/cdn/shop/files/51812XL_533x.jpg?v=1682674875)