Circuit Breakers

Circuit Breakers

Circuit Breakers

Our selection of circuit breakers spans a wide range of applications, from heavy-duty air circuit breakers (ACBs) to compact miniature circuit breakers (MCBs). We offer leading brands like Eaton, Siemens, and Square D, known for their reliability and performance. Whatever your power management needs, you can find the perfect solution here at ARCA Supply.

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    Eaton KLHMVD12BX Circuit Breaker Accessories S2 Handle Mechanism LG Frame NEMA 4/4X Black Eaton KLHMVD12BX Circuit Breaker Accessories S2 Handle Mechanism LG Frame NEMA 4/4X Black
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    Eaton KLHMVD12BX Circuit Breaker Accessories S2 Handle Mechanism LG Frame NEMA 4/4X Black

    MSRP $368.04
    Surplus $144.62
    Eaton KLHMVD12BX Circuit Breaker Accessories S2 Handle Mechanism LG Frame NEMA 4/4X Black​ ARCA SKU:  C15-2373 Brand:  Eaton MPN:  KLHMVD12BX UPC:  782116199693 Shipping Weight:  4.31 Shipping...
    SKU:
    C15-2373
    Frame:
    LG
    MSRP $368.04
    Surplus $144.62
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    Qty in Cart: 0
    Price:
    MSRP $368.04
    Surplus $144.62
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    Eaton KLHMVDB Circuit Breaker Accessories Rotary Handle Kit LG Frame Black Eaton KLHMVDB Circuit Breaker Accessories Rotary Handle Kit LG Frame Black
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    Eaton KLHMVDB Circuit Breaker Accessories Rotary Handle Kit LG Frame Black

    MSRP $141.00
    Surplus $87.26
    Eaton KLHMVDB Circuit Breaker Accessories Rotary Handle Kit LG Frame Black​ ARCA SKU:  C15-2380 Brand:  Eaton MPN:  KLHMVDB UPC:  786685361727 Shipping Weight:  2.10 Shipping Height:  8.00 In...
    SKU:
    C15-2380
    Frame:
    LG
    Short Description:
    VARI-DEPTH ROTARY MECH 8 MM (LG)
    MSRP $141.00
    Surplus $87.26
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    Qty in Cart: 0
    Price:
    MSRP $141.00
    Surplus $87.26
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  • Eaton KPEK1 Circuit Breaker Accessories Eaton KPEK1 Circuit Breaker Accessories
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    Eaton KPEK1 Circuit Breaker Accessories

    MSRP $17.32
    Surplus $5.58
    Eaton KPEK1 Circuit Breaker Accessories​ ARCA SKU:  C15-2044 Brand:  Eaton MPN:  KPEK1 UPC:  782114291839 Shipping Weight:  0.10 lbs. Shipping Height:  1.00 In. Shipping...
    SKU:
    C15-2044
    Series:
    C
    Poles:
    3
    Short Description:
    END CAP KIT_ 3P FOR F FRAME BREAKER
    TS PIK:
    115463768
    Country of Origin:
    Dominican Republic
    MSRP $17.32
    Surplus $5.58
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    Qty in Cart: 0
    Price:
    MSRP $17.32
    Surplus $5.58
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    Eaton KPEK12 Circuit Breaker Accessories End Cap Kit 2P 225A F Frame Eaton KPEK12 Circuit Breaker Accessories End Cap Kit 2P 225A F Frame
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    Eaton KPEK12 Circuit Breaker Accessories End Cap Kit 2P 225A F Frame

    MSRP $15.10
    Surplus $7.52
    Eaton KPEK12 Circuit Breaker Accessories End Cap Kit 2P 225A F Frame​ ARCA SKU:  C15-2448 Brand:  Eaton MPN:  KPEK12 UPC:  782114291818 Shipping Weight:  0.15 Shipping Height:  4.00 In. Shipping...
    SKU:
    C15-2448
    Type:
    End Cap Kit
    Type:
    Imperial
    Used On:
    Molded Case Circuit Breaker
    Accessory Type:
    General Accessories
    Short Description:
    #10-32 TPI, 2-Pole F-Frame, Imperial
    Catalog:
    Eaton_14666_V4T2_448_CAT.pdf
    MSRP $15.10
    Surplus $7.52
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    Qty in Cart: 0
    Price:
    MSRP $15.10
    Surplus $7.52
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  • Eaton KPEK14 Circuit Breaker Accessories Eaton KPEK14 Circuit Breaker Accessories
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    Eaton KPEK14 Circuit Breaker Accessories

    MSRP $33.17
    Surplus $11.18
    Eaton KPEK14 Circuit Breaker Accessories​ ARCA SKU:  C15-9082 Brand:  Eaton MPN:  KPEK14 UPC:  00782114291856 Shipping Weight:  0.20 lbs. Shipping Height:  3.00 In. Shipping...
    SKU:
    C15-9082
    Country of Origin:
    Dominican Republic
    Short Description:
    EATON MOLDED CASE CIRCUIT BREAKER ACCESSORY END CAP KIT, ACCESSORIES AND TERMINA
    MSRP $33.17
    Surplus $11.18
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    Qty in Cart: 0
    Price:
    MSRP $33.17
    Surplus $11.18
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    Eaton KPEK2 Circuit Breaker Accessories End Cap Kit 3P J Frame Eaton KPEK2 Circuit Breaker Accessories End Cap Kit 3P J Frame
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    Eaton KPEK2 Circuit Breaker Accessories End Cap Kit 3P J Frame

    MSRP $38.00
    Surplus $13.89
    Eaton KPEK2 Circuit Breaker Accessories End Cap Kit 3P J Frame​ ARCA SKU:  C15-2451 Brand:  Eaton MPN:  KPEK2 UPC:  782114291870 Shipping Weight:  0.20 Shipping Height:  3.00 In. Shipping...
    SKU:
    C15-2451
    Poles:
    3
    Frame:
    J
    Short Description:
    END CAP KIT_ 3P FOR J FRAME BREAKER.
    MSRP $38.00
    Surplus $13.89
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    Qty in Cart: 0
    Price:
    MSRP $38.00
    Surplus $13.89
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    Eaton KPEK3 Circuit Breaker Accessories 3P EA Eaton KPEK3 Circuit Breaker Accessories 3P EA
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    Eaton KPEK3 Circuit Breaker Accessories 3P EA

    MSRP $32.51
    Surplus $19.38
    Eaton KPEK3 Circuit Breaker Accessories 3P EA​ ARCA SKU:  C15-2444 Brand:  Eaton MPN:  KPEK3 UPC:  786679045312 Shipping Weight:  0.35 lbs. Shipping Height:  5.00 In. Shipping...
    SKU:
    C15-2444
    Type:
    End Cap Kit
    Type:
    Imperial
    Used On:
    Molded Case Circuit Breaker
    Accessory Type:
    General Accessories
    Short Description:
    0.312"-18 TPI, 3-Pole K-Frame, Imperial
    Catalog:
    Eaton_14666_V4T2_448_CAT.pdf
    MSRP $32.51
    Surplus $19.38
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    Qty in Cart: 0
    Price:
    MSRP $32.51
    Surplus $19.38
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  • Eaton KPEK34 Circuit Breaker Accessories
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    Eaton KPEK34 Circuit Breaker Accessories

    MSRP $70.00
    Surplus $22.56
    Eaton KPEK34 Circuit Breaker Accessories​ ARCA SKU:  C15-11328 Brand:  Eaton MPN:  KPEK34 UPC:   Shipping Weight:  0.30 lbs. Shipping Height:  2.00 In. Shipping Length:  6.00 In...
    SKU:
    C15-11328
    TS PIK:
    120215713
    Short Description:
    KD 4 POLE ENDCAP KIT IMPERIAL HARDWARE LINE OR LOAD
    MSRP $70.00
    Surplus $22.56
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    Qty in Cart: 0
    Price:
    MSRP $70.00
    Surplus $22.56
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  • Eaton KPEKM1 Circuit Breaker Accessories EA
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    Eaton KPEKM1 Circuit Breaker Accessories EA

    MSRP $24.82
    Surplus $8.19
    Eaton KPEKM1 Circuit Breaker Accessories EA​ ARCA SKU:  C15-5344 Brand:  Eaton MPN:  KPEKM1 UPC:  78211429184 Shipping Weight:  0.10 lbs. Shipping Height:  2.00 In. Shipping...
    SKU:
    C15-5344
    Country of Origin:
    Dominican Republic
    Short Description:
    EATON MOLDED CASE CIRCUIT BREAKER ACCESSORY END CAP KIT, ACCESSORIES AND TERMINA
    MSRP $24.82
    Surplus $8.19
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    Qty in Cart: 0
    Price:
    MSRP $24.82
    Surplus $8.19
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  • Eaton KPR1A Circuit Breaker Accessories 12PK
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    Eaton KPR1A Circuit Breaker Accessories 12PK

    MSRP $95.28
    Surplus $34.44
    SKU:  C15-5209 Brand:  Eaton MPN:  KPR1A UPC:  786679110201 Shipping Weight:  0.15 lbs. Shipping Height:  1.00 In. Shipping Length:  6.00 In. Shipping Width:  8.00 In...
    SKU:
    C15-5209
    Quantity:
    12
    Thread Size:
    #10-32 TPI
    Thread Type:
    Imperial
    Used On:
    F Frame Series C Molded Case Circuit Breaker
    Short Description:
    #10-32 TPI, Imperial Thread, Keeper Nut for Circuit Breaker
    TS PIK:
    21504934
    Country of Origin:
    United States​
    MSRP $95.28
    Surplus $34.44
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    Qty in Cart: 0
    Price:
    MSRP $95.28
    Surplus $34.44
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    Eaton KPR1AM Circuit Breaker Accessories Keeper Nut Assembly F Frame Eaton KPR1AM Circuit Breaker Accessories Keeper Nut Assembly F Frame
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    Eaton KPR1AM Circuit Breaker Accessories Keeper Nut Assembly F Frame

    MSRP $9.00
    Surplus $3.10
    Eaton KPR1AM Circuit Breaker Accessories Keeper Nut Assembly F Frame​ ARCA SKU:  C15-2049 Brand:  Eaton MPN:  KPR1AM UPC:  786679266113 Shipping Weight:  0.01 Shipping Height:  0.50 In. Shipping...
    SKU:
    C15-2049
    Frame:
    F
    Short Description:
    EATON MOLDED CASE CIRCUIT BREAKER ACCESSORY TERMINATION HARDWARE, METRIC KEEPER
    MSRP $9.00
    Surplus $3.10
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    Qty in Cart: 0
    Price:
    MSRP $9.00
    Surplus $3.10
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    Eaton KPR3A Circuit Breaker Accessories Imperial Keeper Nut K Eaton KPR3A Circuit Breaker Accessories Imperial Keeper Nut K
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    Eaton KPR3A Circuit Breaker Accessories Imperial Keeper Nut K

    MSRP $31.00
    Surplus $14.77
    Eaton KPR3A Circuit Breaker Accessories Imperial Keeper Nut K​ ARCA SKU:  C15-2833 Brand:  Eaton MPN:  KPR3A UPC:  786679265703 Shipping Weight:  0.30 Shipping Height:  1.00 In. Shipping...
    SKU:
    C15-2833
    Type:
    Line End
    Used On:
    Molded Case Circuit Breaker
    Accessory Type:
    General Accessories
    Thread Size:
    0.375 Inch-16 TPI
    Thread Type:
    Imperial
    Short Description:
    0.375"-16 TPI, K-Frame, Imperial Thread, Line End
    Catalog:
    EatonCorp-CutlerHammer_00004_167_CAT.pdf
    MSRP $31.00
    Surplus $14.77
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    Qty in Cart: 0
    Price:
    MSRP $31.00
    Surplus $14.77
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    Eaton KPR3B Circuit Breaker Accessories Imperial Keeper Nut K Frame Eaton KPR3B Circuit Breaker Accessories Imperial Keeper Nut K Frame
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    Eaton KPR3B Circuit Breaker Accessories Imperial Keeper Nut K Frame

    MSRP $31.00
    Surplus $8.89
    Eaton KPR3B Circuit Breaker Accessories Imperial Keeper Nut K Frame​ ARCA SKU:  C15-3085 Brand:  Eaton MPN:  KPR3B UPC:  786679265727 Shipping Weight:  0.35 Shipping Height:  1.00 In. Shipping...
    SKU:
    C15-3085
    Quantity:
    3
    Thread Size:
    0.375 Inch-16 TPI
    Thread Type:
    Imperial
    Type:
    Load Side
    Used On:
    C Series K Frame Molded Case Circuit Breaker
    Specification/Technical:
    Eaton_08689_1_2_SPEC.pdf
    Catalog:
    Eaton_03771_V4T2_414_CAT.pdf
    Short Description:
    EATON MOLDED CASE CIRCUIT BREAKER ACCESSORY TERMINATION HARDWARE, IMPERIAL KEEPE
    MSRP $31.00
    Surplus $8.89
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    Qty in Cart: 0
    Price:
    MSRP $31.00
    Surplus $8.89
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  • Eaton KT3175T Trip Units KT 3P 175A 600V 50/60Hz Eaton KT3175T Trip Units KT 3P 175A 600V 50/60Hz
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    Eaton KT3175T Trip Units KT 3P 175A 600V 50/60Hz

    MSRP $1,550.00
    Surplus $579.88
    SKU:  A13-1235 Brand:  Eaton MPN:  KT3175T UPC:  786679266038 Shipping Weight:  1.50 lbs. Shipping Height:  6.00 In. Shipping Length:  7.00 In. Shipping Width:  5.00 In...
    SKU:
    A13-1235
    Adjustment:
    Magnetic Trip
    Approval:
    UL 489
    Approval:
    CSA C22.2
    Amps:
    175 A
    Frame:
    K
    Poles:
    3
    Type:
    Thermal Magnetic
    Specification/Technical:
    Eaton_08714_1_2_SPEC.pdf
    Frame Type:
    K
    Catalog:
    EatonCorp-CutlerHammer_00123_V4T2_254_V4T2_255_V4T2_299_V4T2_300_V4T2_302_CAT.pdf
    Current Rating:
    175 A
    Number of Poles:
    3
    Country of Origin:
    Dominican Republic
    Short Description:
    EATON MOLDED CASE CIRCUIT BREAKER ACCESSORY TRIP UNIT, TRIP UNIT, 175 A, THREE-P
    MSRP $1,550.00
    Surplus $579.88
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    Qty in Cart: 0
    Price:
    MSRP $1,550.00
    Surplus $579.88
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  • Eaton KT3200T Molded Case Breakers (MCCBs) EA
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    Eaton KT3200T Molded Case Breakers (MCCBs) EA

    MSRP $1,645.00
    Surplus $689.81
    SKU:  C15-9785 Brand:  Eaton MPN:  KT3200T UPC:  78667926604 Shipping Weight:  0.00 lbs. Shipping Height:  0.00 In. Shipping Length:  0.00 In. Shipping Width:  0.00 In...
    SKU:
    C15-9785
    TS PIK:
    21507990
    Current Rating:
    200 A
    Type:
    Thermal Magnetic
    Frame Type:
    K
    Number of Poles:
    3
    Series:
    C
    Catalog:
    Eaton_27487_V4T2_299_V4T2_300_V4T2_302_CAT.pdf
    Short Description:
    200 A, 3-Pole, K Frame, Thermal Magnetic, Molded Case Circuit Breaker Trip Unit
    Country of Origin:
    Dominican Republic
    MSRP $1,645.00
    Surplus $689.81
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    Qty in Cart: 0
    Price:
    MSRP $1,645.00
    Surplus $689.81
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  • Eaton KT3250T Trip Units Eaton KT3250T Trip Units
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    Eaton KT3250T Trip Units

    MSRP $1,216.84
    Surplus $398.25
    SKU:  A13-1048 Brand:  Eaton MPN:  KT3250T UPC:  786679266069 Shipping Weight:  1.60 lbs. Shipping Height:  4.00 In. Shipping Length:  6.00 In. Shipping Width:  4.00 In...
    SKU:
    A13-1048
    Series:
    C, KT
    Type:
    Thermal Magnetic
    Approval:
    UL
    Amps:
    250 A
    Poles:
    3
    Frame Type:
    K
    Accessory Type:
    Trip Unit
    Adjustment:
    Magnetic Trip
    Short Description:
    250 A, 3-Pole, K Frame, Thermal Magnetic
    Catalog:
    Eaton_27487_V4T2_299_V4T2_300_V4T2_302_CAT.pdf
    TS PIK:
    21507992
    Number of Poles:
    3
    Current Rating:
    250 A
    Country of Origin:
    Dominican Republic
    MSRP $1,216.84
    Surplus $398.25
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    Qty in Cart: 0
    Price:
    MSRP $1,216.84
    Surplus $398.25
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    Eaton KT3350TV Trip Units KT 3P 350A 600V 50/60Hz Eaton KT3350TV Trip Units KT 3P 350A 600V 50/60Hz
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    Eaton KT3350TV Trip Units KT 3P 350A 600V 50/60Hz

    MSRP $1,250.00
    Surplus $283.03
    Eaton KT3350TV Trip Units KT 3P 350A 600V 50/60Hz​ ARCA SKU:  A13-1129 Brand:  Eaton MPN:  KT3350TV UPC:   Shipping Weight:  1.85 lbs. Shipping Height:  6.00 In. Shipping...
    SKU:
    A13-1129
    Short Description:
    EATON MOLDED CASE CIRCUIT BREAKER ACCESSORY TRIP UNIT, TRIP UNIT, 350 A, THREE-P
    Poles:
    3
    Volts:
    600 V
    Amps:
    350 A
    Operating Frequency:
    50/60 Hz
    Type:
    KT
    Series:
    C Series
    MSRP $1,250.00
    Surplus $283.03
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    Qty in Cart: 0
    Price:
    MSRP $1,250.00
    Surplus $283.03
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    Eaton KT3400TV Trip Units EA Eaton KT3400TV Trip Units EA
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    Eaton KT3400TV Trip Units EA

    MSRP $1,216.84
    Surplus $412.02
    SKU:  A13-1509 Brand:  Eaton MPN:  KT3400TV UPC:   Shipping Weight:  1.60 lbs. Shipping Height:  4.00 In. Shipping Length:  6.00 In. Shipping Width:  4.00 In. Product...
    SKU:
    A13-1509
    Country of Origin:
    Dominican Republic
    MSRP $1,216.84
    Surplus $412.02
    Contact Us For Quote Quick view
    Qty in Cart: 0
    Price:
    MSRP $1,216.84
    Surplus $412.02
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  • Eaton KT4400T Circuit Breaker Accessories
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    Eaton KT4400T Circuit Breaker Accessories

    MSRP $2,733.49
    Surplus $657.87
    SKU:  C15-11239 Brand:  Eaton MPN:  KT4400T UPC:  78667922337 Shipping Weight:  2.65 lbs. Shipping Height:  6.00 In. Shipping Length:  9.00 In. Shipping Width:  6.00 In...
    SKU:
    C15-11239
    TS PIK:
    106999701
    Country of Origin:
    Dominican Republic
    Short Description:
    EATON MOLDED CASE CIRCUIT BREAKER ACCESSORY TRIP UNIT, EATON MOLDED CASE CIRCUIT
    MSRP $2,733.49
    Surplus $657.87
    See Availability Quick view
    Qty in Cart: 0
    Price:
    MSRP $2,733.49
    Surplus $657.87
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Disclaimer: ARCA Supply is not an authorized distributor, reseller or representative of any manufacturer, brand or product listed. All product names, trademarks, brands and logos are the property of their respective owners. The depiction, description or sale of products featuring these names, trademarks, brands and logos is for identification purposes only and is not intended to indicate any affiliation with or authorization by any rights holder. All items sold by ARCA Supply are covered under ARCA Supply's warranty and not the manufacturer warranty.