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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- 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:BEP Marine
BEP 24-Hour Essential Circuits Module - 1 x 5A [706-4W]
- £81.79
£120.22- £81.79
- Unit price
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24-Hour Essential Circuits Module1 x 5AThe 706-4W 24hr service module consists of 1 x 5amp and 3 x 15amp push to reset Carling CLB Series thermal circuit breakers. Suitable for essential circuits such as bilge pump auto float switch supplies and stereo memory circuits....- £81.79
£120.22- £81.79
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Vendor:Blue Sea Systems
Blue Sea C-Series ELCI Main Circuit Breaker - 120/240V AC 50A [3104]
- £421.73
£603.33- £421.73
- Unit price
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C-Series ELCI Main Circuit Breaker - 120/240V AC 50AFeatures: Provides over current and leakage protection per ABYC E-11 for whole boat shore power protection Meets UL 1500 external ignition protection requirements Trips on short circuit, overload, or leakage to ground Front panel mount—installed in...- £421.73
£603.33- £421.73
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Vendor:Blue Sea Systems
Blue Sea 7157 Short Stop Circuit Breaker - 50A [7157]
- £8.25
£10.87- £8.25
- Unit price
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7157 Short Stop Circuit Breaker - 50A 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: 50A DC Maximum Voltage: 28V DC Interrupt Capacity: 2500A @ 28V...- £8.25
£10.87- £8.25
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Vendor:Blue Sea Systems
Blue Sea Push Button Reset Only Screw Terminal Circuit Breaker - 30 Amps [2136]
- £6.75
£8.25- £6.75
- Unit price
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Push Button Reset Only Screw Terminal Circuit Breaker - 30 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...- £6.75
£8.25- £6.75
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Vendor:Blue Sea Systems
Blue Sea 7414 A-Series Flat Rocker Circuit Breaker - Double Pole - 30A [7414]
- £42.77
£57.77- £42.77
- Unit price
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A-Series Flat Rocker Circuit Breaker - Double Pole - 30AFeatures: 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 : 30A AC / 30A DC Actuator Style:...- £42.77
£57.77- £42.77
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Vendor:Blue Sea Systems
Blue Sea 7185 70 Amp Circuit Breaker Surface Mount 285 Series [7185]
- £44.27
£60.03- £44.27
- Unit price
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285-Series Thermal Circuit Breaker Surface Mount, 70A Drop-in replacement for 185-series Circuit Breakers Visible reset lever shows open condition "Trip Free" - cannot be held closed after tripWARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State...- £44.27
£60.03- £44.27
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Vendor:Blue Sea Systems
Blue Sea 7187 100 Amp Circuit Breaker Surface Mount 285 Series [7187]
- £44.27
£60.03- £44.27
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285-Series Thermal Circuit Breaker Surface Mount, 100A Drop-in replacement for 185-series Circuit Breakers Visible reset lever shows open condition "Trip Free" - cannot be held closed after tripWARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State...- £44.27
£60.03- £44.27
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Vendor:Blue Sea Systems
Blue Sea 2142 Medium Duty Push Button Reset-Only - 50A [2142]
- £46.52
£63.78- £46.52
- Unit price
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2142Amperage: 50AFeatures: Weatherproof Can be used as Main, Branch, or 24 hour circuit protection Compact design enables high density circuit protection configurations Push-to-reset operation "Trip Free" design cannot be held "ON" during fault current condition Ignition protected - Safe for installation aboard gasoline powered...- £46.52
£63.78- £46.52
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Vendor:Blue Sea Systems
Blue Sea 7403 Single Pole Small Case 2" Flat Rocker Circuit Breaker - 15 Amp [7403]
- £22.51
£30.01- £22.51
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Single Pole Small Case 2" Flat Rocker Circuit BreakerPN: 7403Amperage: 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 Volts...- £22.51
£30.01- £22.51
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Vendor:Blue Sea Systems
Blue Sea 7347 AC/DC Single Pole Magnetic World Circuit Breaker - 8 AMP [7347]
- £18.00
£24.01- £18.00
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AC / 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 Canada.PN: 7347Color: BlackAmperage: 8 AmpDelay: StandardFeatures: The industry standard circuit breaker for Blue...- £18.00
£24.01- £18.00
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Vendor:Blue Sea Systems
Blue Sea 7402 Single Pole Small Case 2" Flat Rocker Circuit Breaker - 10 Amp [7402]
- £22.51
£30.01- £22.51
- Unit price
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Single Pole Small Case 2" Flat Rocker Circuit BreakerPN: 7402Amperage: 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 250 Volts AC / 80 Volts...- £22.51
£30.01- £22.51
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Vendor:Blue Sea Systems
Blue Sea 8087 8 Position DC C-Series Panel - Blank [8087]
- £67.53
£98.30- £67.53
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8 Position Panel 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" indication LEDs WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp)...- £67.53
£98.30- £67.53
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Vendor:Blue Sea Systems
Blue Sea 7467 UL-489 Circuit Breaker - 50A Raised Rocker [7467]
- £57.77
£78.79- £57.77
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7467 UL-489 Circuit Breaker - 50A Raised 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: Raised Rocker Poles: 2 Maximum Voltage: 250V AC Circuit Breaker Type:...- £57.77
£78.79- £57.77
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Vendor:Blue Sea Systems
Blue Sea 7475 C-Series Flat Rocker Circuit Breakers, Single and Double Pole - 150 Amp [7475]
- £131.32
£180.09- £131.32
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C - Series Flat Circuit Breaker, Single and Double PolePN: 7475Amperage: 150 AmpFeatures: Color actuator indicates "OFF" position "Trip Free" design cannot be held "ON" during fault current condition Flat actuator protects against accidental switching Specifications Circuit Breaker Type Magnetic Hydraulic - Trip Free Maximum...- £131.32
£180.09- £131.32
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Vendor:Blue Sea Systems
Blue Sea 5052 ST CLB Circuit Breaker Block - 6 Position w/Negative Bus [5052]
- £52.52
£71.28- £52.52
- Unit price
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ST CLB Circuit Breaker Block - 6 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...- £52.52
£71.28- £52.52
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Vendor:Blue Sea Systems
Blue Sea 7143 187 - Series Thermal Circuit Breaker - 90Amp [7143]
- £69.03
£94.55- £69.03
- Unit price
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187 - Series Thermal Circuit Breakers - Surface Mount90 Amp Circuit BreakerPN: 7143Features: 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...- £69.03
£94.55- £69.03
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Vendor:Sea-Dog
Sea-Dog Thermal AC/DC Circuit Breaker - Splash Guard Boot [420839-1]
- £3.74
£4.69- £3.74
- Unit price
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Thermal AC/DC Circuit Breaker - Splash Guard BootThermal AC/DC Circuit Breakers are designed to protect an electrical circuit from damage caused by excess current. Vibration and shock resistant these push-to-reset circuit breakers are an economical alternative to magnetic breakers. Unlike sacrificial fuses they have...- £3.74
£4.69- £3.74
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Vendor:Blue Sea Systems
Blue Sea 7412 A-Series Flat Rocker Circuit Breaker - Double Pole - 16A [7412]
- £42.77
£57.77- £42.77
- Unit price
- / per
A-Series Flat Rocker Circuit Breaker - Double Pole - 16AFeatures: 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 : 16A AC / 16A DC Actuator Style:...- £42.77
£57.77- £42.77
- Unit price
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Vendor:Blue Sea Systems
Blue Sea 7085 70 Amp Circuit Breaker Panel Mount 285 Series [7085]
- £44.27
£60.03- £44.27
- Unit price
- / per
285-Series Thermal Circuit Breaker Panel Mount - 70APart#7085 Drop in replacement for 185-Series Circuit Breakers Visible reset lever shows open condition Ignition protected - Safe for installation aboard gasoline powered boats Meets SAE J1171 external ignition protection requirements Weather Resistant Combines switching and circuit...- £44.27
£60.03- £44.27
- Unit price
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Vendor:Blue Sea Systems
Blue Sea 7189 150 Amp Circuit Breaker Surface Mount 285 Series [7189]
- £44.27
£60.03- £44.27
- Unit price
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285-Series Thermal Circuit Breaker Surface Mount, 150A Drop-in replacement for 185-series Circuit Breakers Visible reset lever shows open condition "Trip Free" - cannot be held closed after tripWARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State...- £44.27
£60.03- £44.27
- Unit price
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![Blue Sea 7157 Short Stop Circuit Breaker - 50A [7157]](http://www.dbmarinesupplies.com/cdn/shop/files/68722XL_533x.jpg?v=1682711041)
![Blue Sea 7403 Single Pole Small Case 2" Flat Rocker Circuit Breaker - 15 Amp [7403]](http://www.dbmarinesupplies.com/cdn/shop/files/20652XL_533x.jpg?v=1682638255)
![Blue Sea 5052 ST CLB Circuit Breaker Block - 6 Position w/Negative Bus [5052]](http://www.dbmarinesupplies.com/cdn/shop/files/51811XL_533x.jpg?v=1682674862)