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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
  • 13 - 24 of 454
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    Description
    Price
    Quantity
    • EATON's Bussmann Series 121B30-A2P-KA Shortstop Circuit Breaker
    • Category: Circuit Breakers
    • Manufacturer: EATON
    • Standard Automotive Type 1
    • Automatic Reset 
    • Plastic Housings
    • IP 66 Rated
    • 10-32 stud terminals
    • Right angle mounting bracket
    • Amps: 30
    Item#:
    46331
    Manufacturer Item:
    121B30-A2P-KA
    Manufacturer:
    Eaton
    Min. Order Qty:
    3
    Avail #:
    952
    Price Break for UM: EA

    Qty Piece Price Ext. Price
    3
    2.1320
    6.40
    50
    1.8480
    92.40
    100
    1.6070
    160.70
    200
    1.4830
    296.60
    500
    1.4210
    710.50
    Item#:
    46340
    Manufacturer Item:
    121B40-A2M-KA
    Manufacturer:
    Eaton
    Min. Order Qty:
    3
    Avail #:
    591
    Price Break for UM: EA

    Qty Piece Price Ext. Price
    3
    2.3520
    7.06
    50
    2.0480
    102.40
    100
    1.7750
    177.50
    200
    1.6380
    327.60
    500
    1.5660
    783.00
    Item#:
    46341
    Manufacturer Item:
    121B40-A2P-KA
    Manufacturer:
    Eaton
    Min. Order Qty:
    3
    Avail #:
    1,809
    Price Break for UM: EA

    Qty Piece Price Ext. Price
    3
    2.1320
    6.40
    50
    1.8480
    92.40
    100
    1.6070
    160.70
    200
    1.4830
    296.60
    500
    1.4210
    710.50
    Item#:
    46350
    Manufacturer Item:
    121B50-A2M-KA
    Manufacturer:
    Eaton
    Min. Order Qty:
    3
    Avail #:
    998
    Price Break for UM: EA

    Qty Piece Price Ext. Price
    3
    2.3520
    7.06
    50
    2.0480
    102.40
    100
    1.7750
    177.50
    200
    1.6380
    327.60
    500
    1.5660
    783.00
    Item#:
    46351
    Manufacturer Item:
    121B50-A2P-KA
    Manufacturer:
    Eaton
    Min. Order Qty:
    3
    Avail #:
    1,180
    Price Break for UM: EA

    Qty Piece Price Ext. Price
    3
    2.1320
    6.40
    50
    1.8480
    92.40
    100
    1.6070
    160.70
    200
    1.4830
    296.60
    500
    1.4210
    710.50
    • EATON's Bussmann Series 123B15-A2P-KA Shortstop Circuit Breaker
    • Category: Circuit Breakers
    • Manufacturer: EATON
    • Series: 12X
    • Type: Shortstop
    • Current Rating: 15A
    • Voltage Rating: 24V
    • Terminals: (2) #10-32 Studs
    • Reset Method: Type III - Manual
    • Mounting Style: Right Angle Bracket
    • Plastic housing cover
    Item#:
    46370
    Manufacturer Item:
    123B15-A2P-KA
    Manufacturer:
    Eaton
    Min. Order Qty:
    3
    Avail #:
    1,535
    Price Break for UM: EA

    Qty Piece Price Ext. Price
    3
    2.5520
    7.66
    50
    2.2160
    110.80
    100
    2.0790
    207.90
    200
    1.9160
    383.20
    500
    1.8330
    916.50
    • EATON's Bussmann Series 123B20-A2P-KA Shortstop Circuit Breaker
    • Category: Circuit Breakers
    • Manufacturer: EATON
    • Series: 12X
    • Type: Shortstop
    • Current Rating: 20A
    • Voltage Rating: 24V
    • Terminals: (2) #10-32 Studs
    • Reset Method: Type III - Manual
    • Mounting Style: Right Angle Bracket
    • Plastic housing cover
    Item#:
    46371
    Manufacturer Item:
    123B20-A2P-KA
    Manufacturer:
    Eaton
    Min. Order Qty:
    2
    Avail #:
    751
    Price Break for UM: EA

    Qty Piece Price Ext. Price
    2
    2.5520
    5.10
    50
    2.2160
    110.80
    100
    2.0790
    207.90
    200
    1.9160
    383.20
    500
    1.8330
    916.50
    • EATON's Bussmann Series Shortstop Circuit Breaker 123B30-A2P-KA
    • Category: Circuit Breakers
    • Manufacturer: EATON
    • Series: 12X
    • Type: Shortstop
    • Current Rating: 30A
    • Voltage Rating: 24V
    • Terminals: (2) #10-32 Studs
    • Reset Method: Type III - Manual
    • Mounting Style: Right Angle Bracket
    • Plastic housing cover
    Item#:
    46373
    Manufacturer Item:
    123B30-A2P-KA
    Manufacturer:
    Eaton
    Min. Order Qty:
    2
    Avail #:
    738
    Price Break for UM: EA

    Qty Piece Price Ext. Price
    2
    4.0430
    8.09
    50
    3.5070
    175.35
    100
    3.0560
    305.60
    200
    2.8120
    562.40
    500
    2.6880
    1344.00
    • EATON's Bussmann Series 123B30-A2P Shortstop Circuit Breaker
    • Category: Circuit Breakers
    • Manufacturer: EATON
    • Series: 12X
    • Type: Shortstop
    • Current Rating: 30A
    • Voltage Rating: 24V
    • Terminals: (2) #10-32 Studs
    • Reset Method: Type III - Manual
    • Mounting Style: Right Angle Bracket
    • Plastic housing cover
    Item#:
    46373B
    Manufacturer Item:
    123B30-A2P
    Manufacturer:
    Eaton
    Min. Order Qty:
    3
    Avail #:
    1,031
     
    RoHS Compliant
    Price Break for UM: EA

    Qty Piece Price Ext. Price
    3
    2.5730
    7.72
    50
    2.2370
    111.85
    100
    1.9430
    194.30
    200
    1.7920
    358.40
    500
    1.7200
    860.00
    • EATON's Bussmann Series 123B50-A2P-KA Shortstop Circuit Breaker
    • Category: Circuit Breakers
    • Manufacturer: EATON
    • Series: 12X
    • Type: Shortstop
    • Current Rating: 50A
    • Voltage Rating: 24V
    • Terminals: (2) #10-32 Studs
    • Reset Method: Type III - Manual
    • Mounting Style: Right Angle Bracket
    • Plastic housing cover
    Item#:
    46374
    Manufacturer Item:
    123B50-A2P-KA
    Manufacturer:
    Eaton
    Min. Order Qty:
    2
    Avail #:
    453
    Price Break for UM: EA

    Qty Piece Price Ext. Price
    2
    2.5520
    5.10
    50
    2.2160
    110.80
    100
    2.0790
    207.90
    200
    1.9160
    383.20
    500
    1.8330
    916.50
    • EATON's Bussmann Series 123B10-A2P-KA Shortstop Circuit Breaker
    • Category: Circuit Breakers
    • Manufacturer: EATON
    • Series: 12X
    • Type: Shortstop
    • Current Rating: 10A
    • Voltage Rating: 24V
    • Terminals: (2) #10-32 Studs
    • Reset Method: Type III - Manual
    • Mounting Style: Right Angle Bracket
    • Plastic housing cover
    Item#:
    46375
    Manufacturer Item:
    123B10-A2P-KA
    Manufacturer:
    Eaton
    Min. Order Qty:
    2
    Avail #:
    340
    Price Break for UM: EA

    Qty Piece Price Ext. Price
    2
    2.5520
    5.10
    50
    2.2160
    110.80
    100
    2.0790
    207.90
    200
    1.9160
    383.20
    500
    1.8330
    916.50
    • EATON's Bussmann Series 123B40-A2P-KA Shortstop Circuit Breaker
    • Category: Circuit Breakers
    • Manufacturer: EATON
    • Series: 12X
    • Type: Shortstop
    • Current Rating: 40A
    • Voltage Rating: 24V
    • Terminals: (2) #10-32 Studs
    • Reset Method: Type III - Manual
    • Mounting Style: Right Angle Bracket
    • Plastic housing cover
    Item#:
    46376
    Manufacturer Item:
    123B40-A2P-KA
    Manufacturer:
    Eaton
    Min. Order Qty:
    2
    Avail #:
    4,320
    Price Break for UM: EA

    Qty Piece Price Ext. Price
    2
    2.5520
    5.10
    50
    2.2160
    110.80
    100
    2.0790
    207.90
    200
    1.9160
    383.20
    500
    1.8330
    916.50
    13 - 24 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.