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Nominal Voltage
Temp (Degrees)
Series
Reset Method
Mounting Style
Amps
Ingress Protection

Automotive Circuit Breakers and Electrical Circuit Breakers

Waytek carries thousands of automotive circuit breakers for auxiliary and accessory circuits on trucks, buses, recreational vehicles, marine, and construction equipment. From auto reset circuit breakers to blade type electrical circuit breakers, 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 454
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    Description
    Price
    Quantity
    • EATON's Bussmann Series B156-7003-J Flange Panel Mount Gasket 
    • Category: Circuit Breakers
    • Manufacturer: EATON
    • Component Type: Flange Mount Panel Gasket
    • For Series 18X & 28X EATON's Bussmann panel mount circuit breakers
    Item#:
    23539
    Manufacturer Item:
    B156-7003-J
    Manufacturer:
    Eaton
    Min. Order Qty:
    1
    Avail #:
    169
    1+
    3.1710
    50+
    2.7620
    100+
    2.3940
    200+
    2.2040
    500+
    2.1120
    EACH
    This red short stop circuit breaker boot insulates your circuit from shorting out by protecting it from the elements in power leads and automotive applications. This particular circuit breaker boot will fit with or without mounting brackets.
    • 23540 Circuit Breaker Boot
    • Category: Battery Boots
    • Type: Short Stop circuit breakers 
    • Color: Red
    • Red boot is typically used for power leads, while yellow boot is for marine applications
    Item#:
    23540
    Min. Order Qty:
    10
    Avail #:
    11,584
     
    RoHS Compliant
    REACH Compliant
    1+
    0.5260
    50+
    0.5060
    100+
    0.4860
    200+
    0.4720
    500+
    0.4580
    1000+
    0.4410
    EACH
    • 23541 Circuit Breaker Boot
    • Category: Battery Boots
    • Circuit breaker boot for short stop circuit breakers
    • Insulates your circuit breakers from shorting out
    • Yellow boot is for marine applications, Red boot is typically used for power leads
    • Fits circuit breakers with or without mounting brackets
    Item#:
    23541
    Min. Order Qty:
    10
    Avail #:
    660
     
    RoHS Compliant
    REACH Compliant
    1+
    0.5690
    50+
    0.5470
    100+
    0.5260
    200+
    0.5100
    500+
    0.4960
    1000+
    0.4760
    EACH
    Item#:
    46310
    Manufacturer Item:
    121B10-A2M-KA
    Manufacturer:
    Eaton
    Min. Order Qty:
    3
    Avail #:
    233
     
    RoHS Compliant
    1+
    2.3520
    50+
    2.0480
    100+
    1.7750
    200+
    1.6380
    500+
    1.5660
    EACH
    • EATON's Bussmann Series 121B10A2P-KA Shortstop Circuit Breaker
    • Category: Circuit Breakers
    • Manufacturer: EATON
    • Series: 12X
    • Type: Shortstop
    • Current Rating: 10A
    • Voltage Rating: 12V
    • Terminals: (2) #10-32 Studs
    • Reset Method: Type I - Automatic
    • Mounting Style: Right Angle Bracket
    • Plastic housing cover
    • Metal housing also available (Cooper Bussmann 121B10-A2M-KA Shortstop Circuit Breaker)
    Item#:
    46311
    Manufacturer Item:
    121B10-A2P-KA
    Manufacturer:
    Eaton
    Min. Order Qty:
    3
    Avail #:
    224
     
    RoHS Compliant
    1+
    2.1320
    50+
    1.8480
    100+
    1.6070
    200+
    1.4830
    500+
    1.4210
    EACH
    Item#:
    46315
    Manufacturer Item:
    121B15-A2M-KA
    Manufacturer:
    Eaton
    Min. Order Qty:
    3
    Avail #:
    884
     
    RoHS Compliant
    REACH Compliant
    1+
    2.2890
    50+
    1.9850
    100+
    1.7330
    200+
    1.5860
    500+
    1.5240
    EACH
    Item#:
    46316
    Manufacturer Item:
    121B15-A2P-KA
    Manufacturer:
    Eaton
    Min. Order Qty:
    3
    Avail #:
    471
     
    RoHS Compliant
    1+
    2.1320
    50+
    1.8480
    100+
    1.6070
    200+
    1.4830
    500+
    1.4210
    EACH
    • EATON's Bussmann Series 121B20-A2M-KA Shortstop Circuit Breaker
    • Category: Circuit Breakers
    • Manufacturer: EATON
    • Standard Automotive Type 1
    • Metal Housings
    • Automatic Reset circuit breakers
    • 10-32 Stud Terminals
    • Right Angle Bracket w/ Nuts
    • Amps: 20
    Item#:
    46320
    Manufacturer Item:
    121B20-A2M-KA
    Manufacturer:
    Eaton
    Min. Order Qty:
    3
    Avail #:
    252
     
    RoHS Compliant
    1+
    2.3520
    50+
    2.0480
    100+
    1.7750
    200+
    1.6380
    500+
    1.5660
    EACH
    Item#:
    46321
    Manufacturer Item:
    121B20-A2P-KA
    Manufacturer:
    Eaton
    Min. Order Qty:
    3
    Avail #:
    0
     
    RoHS Compliant
    1+
    2.1320
    50+
    1.8480
    100+
    1.6070
    200+
    1.4830
    500+
    1.4210
    EACH
    Item#:
    46325
    Manufacturer Item:
    121B25-A2M-KA
    Manufacturer:
    Eaton
    Min. Order Qty:
    3
    Avail #:
    198
    1+
    2.3520
    50+
    2.0480
    100+
    1.7750
    200+
    1.6380
    500+
    1.5660
    EACH
    Item#:
    46326
    Manufacturer Item:
    121B25-A2P-KA
    Manufacturer:
    Eaton
    Min. Order Qty:
    3
    Avail #:
    612
    1+
    2.1320
    50+
    1.8480
    100+
    1.6070
    200+
    1.4830
    500+
    1.4210
    EACH
    • EATON's Bussmann Series 121B30-A2M-KA Shortstop Circuit Breaker
    • Category: Circuit Breakers
    • Manufacturer: EATON
    • Short Stop Circuit Breaker
    • Standard Automotive Type 1
    • 10-32 Stud Terminals
    • Right angle mounting bracket
    • Metal Housings
    • Amps: 30
    Item#:
    46330
    Manufacturer Item:
    121B30-A2M-KA
    Manufacturer:
    Eaton
    Min. Order Qty:
    3
    Avail #:
    311
    1+
    2.3520
    50+
    2.0480
    100+
    1.7750
    200+
    1.6380
    500+
    1.5660
    EACH
    1 - 12 of 454
    View:
    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. Make Waytek your one-stop shop for all of your electrical components.