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Automotive Circuit Breakers

Waytek carries thousands of electrical circuit breakers for auxiliary and accessory circuits on trucks, buses, recreational vehicles, marine, and construction equipment. From hi-amp circuit breakers to blade type electrical breaker, our selection covers all electrical projects. Waytek has rugged and reliable circuit breakers for exceptional circuit protection performance.

To make a selection on which automotive circuit breaker is best for your application, you must consider where the circuit breaker will be mounted, the current rating you need the electrical breaker to carry, and the type of reset method. There are four electrical circuit breaker types:

  • Type I Automatic Reset, which means the circuit breaker keeps cycling on and off until the overload is removed
  • Type ll Modified Reset or Non Cycling, where the circuit breaker doesn't reset until the overload is removed or powered off
  • Type lll Manual Reset with the trip indication shown on the body of the circuit breaker and it must be manually reset
  • Type lll Switchable, which is similar to Type lll Manual Reset, but the circuit breaker has a manual trip button
    • 1 - 12 of 420 ▶
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    Description
    Price
    Quantity

    Nut 10-32 KEPS Zinc PLated For Circuit Breaker

    Item#:
    90507
    Min. Order Qty:
    100
    Avail #:
    63,148
    1+
    0.0136
    250+
    0.0122
    500+
    0.0108
    EACH

    Blue Sea Systems 5054 ST CLB Circuit Breaker Block, 12 Position with Negative Bus

    • Blue Sea Systems 5054 ST CLB Circuit Breaker Block
    • Category: Power Distribution Modules
    • Manufacturer: Blue Sea Systems
    • As easy to use as a Fuse Block
    • Uses Snap-in-Place CLB resettable circuit breaker, making them easy to install
    • 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 cover
    • Breakouts allow wire access in two directions
    • Accepts ring terminals
    • 32V DC Maximum Voltage
    • Maximum 32A per Circuit and 100A per Block
    • 14°F (-10°C) to 140°F (60°C)
    • #8-32 Screws with Captive Star Lock Washer Screw Terminal
    • Mounting Centers 10.13in (257.3 mm)
    • #8 Screw (M4) or #8 Nut Mounting
    Item#:
    78304
    Manufacturer Item:
    5054
    Manufacturer:
    Blue Sea Systems
    Min. Order Qty:
    1
    Avail #:
    7
    1+
    119.9700
    EACH

    Blue Sea Systems 5052 ST CLB Circuit Breaker Block, 6 Position with Negative Bus

    • Blue Sea Systems 5052 ST CLB Circuit Breaker Block
    • Category: Power Distribution Modules
    • Manufacturer: Blue Sea Systems
    • As easy to use as a Fuse Block
    • Uses Snap-in-Place CLB resettable circuit breaker, making them easy to install
    • 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 Cover
    • Breakouts allow wire access in two directions
    • Accepts ring terminals
    • 32V DC Maximum Voltage
    • Maximum Amperage 100A per block and 32A per Circuit
    • 14°F (-10°C) to 140°F (60°C)
    • #8-32 Screws with Captive Star Lock Washer Screw Terminal
    • Mounting Centers 5.63in (143 mm)
    • #8 Screw (M4) or #8 Nut Mounting
    Item#:
    78303
    Manufacturer Item:
    5052
    Manufacturer:
    Blue Sea Systems
    Min. Order Qty:
    1
    Avail #:
    2
    1+
    69.9700
    EACH

    Blue Sea Systems 5051 ST CLB Circuit Breaker Block, 12 Independent Circuits

    • Blue Sea Systems 5051 ST CLB Circuit Breaker Block
    • Category: Power Distribution Modules
    • Manufacturer: Blue Sea Systems
    • As easy to use as a Fuse Block
    • Uses Snap-in-Place CLB resettable circuit breaker, making them easy to install
    • 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 cover
    • Breakouts allow wire access in two directions
    • Accepts ring terminals
    • 32V DC Maximum Voltage
    • Maximum 32A per Circuit and 40A per Jumped Circuit Group
    • 14°F (-10°C) to 140°F (60°C)
    • #8-32 Screws with Captive Star Lock Washer Screw Terminal
    • Mounting Centers 10.13in (257.3 mm)
    • #8 Screw (M4) or #8 Nut Mounting
    Item#:
    78302
    Manufacturer Item:
    5051
    Manufacturer:
    Blue Sea Systems
    Min. Order Qty:
    1
    Avail #:
    2
    1+
    89.9700
    EACH

    Blue Sea Systems 5050 ST CLB Circuit Breaker Block, 6 Independent Circuits

    • Blue Sea Systems 5050 ST CLB Circuit Breaker Block
    • Category: Power Distribution Modules
    • Manufacturer: Blue Sea Systems
    • As easy to use as a Fuse Block
    • Uses Snap-in-Place CLB resettable circuit breaker, making them easy to install
    • 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 cover
    • Breakouts allow wire access in two directions
    • Accepts ring terminals
    • 32V DC Maximum Voltage
    • Maximum 32A per circuit, and 40A per jumped circuit group
    • 14°F (-10°C) to 140°F (60°C)
    • #8-32 Screws with Captive Star Lock Washer Screw Terminal
    • Mounting Centers 5.63in (143 mm)
    • #8 Screw (M4) or #8 Nut Mounting
    Item#:
    78301
    Manufacturer Item:
    5050
    Manufacturer:
    Blue Sea Systems
    Min. Order Qty:
    1
    Avail #:
    2
    1+
    54.9700
    EACH

    Blue Sea Systems 5049 ST CLB Circuit Breaker Block Jumper

    • Blue Sea Systems 5049 ST CLB Circuit Breaker Block Jumper
    • Category: Power Distribution Modules
    • Manufacturer: Blue Sea Systems
    • As easy to use as a Fuse Block
    • Uses Snap-in-Place CLB resettable circuit breaker, making them easy to install
    • 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 cover
    Item#:
    78300
    Manufacturer Item:
    5049
    Manufacturer:
    Blue Sea Systems
    Min. Order Qty:
    1
    Avail #:
    11
    1+
    5.4800
    EACH

    Mechanical Products 174-S2-250-2 Surface Mount Circuit Breakers, 250A, Manual Reset 3/8" Studs

    • Mechanical Products 174-S2-250-2 Surface Mount Circuit Breaker
    • Category: Hi Amp Circuit Breakers
    • Manufacturer: Mechanical Products
    • Mounting Style: Surface Mount
    • Amperage: 250A
    • Higher amperage ratings NOT previously available in Hi Amp Circuit Breakers
    • For use in critical vehicle applications; up to 300A / 14 VDC (max)
    • Alternative replacement for high amp fuses - no more replacing fuses
    • Alternative for circuit breakers used in parallel
    • Reduce footprint size and cost
    • Reduce nuisance trips and potential unbalanced loads
    • Improved wire termination via 3/8" stainless steel studs
    • Made in USA
    Item#:
    49082
    Manufacturer Item:
    174-S2-250-2
    Manufacturer:
    Mechanical Products MP
    Min. Order Qty:
    1
    Avail #:
    27
    1+
    29.0500
    20+
    24.6900
    100+
    21.7900
    EACH

    Mechanical Products 174-S2-225-2 Surface Mount Circuit Breaker, 225A Manual Reset 3/8" Studs

    • Mechanical Products 174-S2-225-2 Surface Mount Circuit Breaker
    • Category: Hi Amp Circuit Breakers
    • Manufacturer: Mechanical Products
    • Mounting Style: Surface Mount
    • Amperage: 225A
    • Higher amperage ratings not previously available in Hi Amp Circuit Breakers
    • For use in critical vehicle applications; up to 300A / 14 VDC (max)
    • Alternative replacement for high amp fuses - no more replacing fuses
    • Alternative for circuit breakers used in parallel
    • Reduce footprint size and cost
    • Reduce nuisance trips and potential unbalanced loads
    • Improved wire termination via 3/8" stainless steel studs
    • Made in USA
    Item#:
    49081
    Manufacturer Item:
    174-S2-225-2
    Min. Order Qty:
    1
    Avail #:
    132
    1+
    29.0500
    20+
    24.6900
    100+
    21.7900
    EACH

    Mechanical Products 171-S2-300-2 Surface Mount Circuit Breaker, 300 amp Auto Reset 3/8" Studs

    • Mechanical Products 171-S2-300-2 Surface Mount Circuit Breaker
    • Category: Hi Amp Circuit Breakers
    • Manufacturer: Mechanical Products
    • Mounting Style: Hi Amp Circuit Breakers
    • For use in critical vehicle applications; up to 300A / 14VDC (max)
    • Alternative replacement for high amp fuses - no more replacing fuses
    • Alternative for circuit breakers used in parallel
    • Reduce footprint size and cost
    • Reduce nuisance trips and potential unbalanced loads
    • Improved wire termination via 3/8" stainless steel studs
    • Made in USA
    Item#:
    49034
    Manufacturer Item:
    171-S2-300-2
    Manufacturer:
    Mechanical Products MP
    Min. Order Qty:
    1
    Avail #:
    33
    1+
    29.6800
    20+
    25.2300
    100+
    22.2600
    EACH

    Mechanical Products 171-S2-275-2 Surface Mount Circuit Breaker, Auto Reset 3/8", 275A

    • Mechanical Products 171-S2-275-2 Surface Mount
    • Category: Circuit Breakers
    • Manufacaturer: Mechanical Products
    • Higher amperage ratings NOT previously available in Hi Amp Circuit Breakers
    • For use in critical vehicle applications; up to 300A / 14 VDC (max)
    • Alternative replacement for high amp fuses - no more replacing fuses
    • Alternative for circuits breakers used in parallel
    • Reduce footprint size and cost
    • Reduce nuisance trips and potential unbalanced loads
    • Improved wire termination via 3/8" stainless steel studs
    • Made in USA
    Item#:
    49033
    Manufacturer Item:
    171-S2-275-2
    Min. Order Qty:
    1
    Avail #:
    12
    1+
    29.6800
    20+
    25.2300
    100+
    22.2600
    EACH

    Mechanical Products 171-S2-250-2 Surface Mount Circuit Breaker 250A Auto Reset 3/8" Stud

    • Mechanical Products 171-S2-250-2 Surface Mount Circuit Breaker
    • Category: Circuit Breakers
    • Manufacturer: Mechanical Products MP
    • Component Type: Hi Amp Circuit Breakers
    • Amperage: 250A
    • Reset method: Type 1 - Automatic
    • Higher amperage ratings NOT previously available in Hi Amp Circuit Breakers
    • For use in critical vehicle applications; up to 300A / 14 VDC (max)
    • Alternative replacement for high amp fuses - no more replacing fuses
    • Alternative for circuit breakers used in parallel
    • Reduce footprint size and cost
    • Reduce nuisance trips and potential unbalanced loads
    • Improved wire termination via 3/8" stainless steel studs
    • Made in USA
    Item#:
    49032
    Manufacturer Item:
    171-S2-250-2
    Manufacturer:
    Mechanical Products MP
    Min. Order Qty:
    1
    Avail #:
    7
    1+
    25.3700
    20+
    21.5600
    100+
    19.0300
    EACH

    Mechanical Products 171-S2-225-2 Surface Mount Circuit Breaker, Auto Reset 3/8", 225A

    • Mechanical Products 171-S2-225-2 Surface Mount
    • Category: Circuit Breakers
    • Manufacaturer: Mechanical Products
    • Higher amperage ratings NOT previously available in Hi Amp Circuit Breakers
    • For use in critical vehicle applications; up to 300A / 14VDC (max)
    • Alternative replacement for high amp fuses - no more replacing fuses
    • Alternative for circuit breakers used in parallel
    • Reduce footprint size and cost
    • Reduce nuisance trips and potential unbalanced loads
    • Improved wire termination via 3/8" stainless steel studs
    • Made in USA
    Item#:
    49031
    Manufacturer Item:
    171-S2-225-25
    Manufacturer:
    Mechanical Products MP
    Min. Order Qty:
    1
    Avail #:
    8
    1+
    25.3700
    20+
    21.5600
    100+
    19.0300
    EACH
    1 - 12 of 420 ▶
    View:
    For the most rugged and severe weather applications, Waytek carries marine rated circuit breakers. They comply with SAEJ1171 standards for waterproof circuit protection. Waytek carries circuit breakers for virtually every mobile equipment situation.

    Not sure if a circuit breaker is exactly what you’re looking for, Waytek carries hundreds of other circuit protection devices ranging from circuit breaker panels to eliminate power management issues and are essential in managing functionality and power capacity, to Bussmann fuses, to electrical terminals designed to connect your circuit breaker or circuit protection device from damage.

    Find other circuit protection devices similar to circuit breakers as well as automotive wire connectors designed to make the connection of your circuit protection devices and application quick and easy. Make Waytek your one-stop shop for all of your electrical components.