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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  • Siemens B340 Miniature Circuit Breakers (MCBs) B 3P 40A 240V EA Siemens B340 Miniature Circuit Breakers (MCBs) B 3P 40A 240V EA
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    Siemens B340 Miniature Circuit Breakers (MCBs) B 3P 40A 240V EA

    MSRP $651.00
    Surplus $97.34
    Siemens B340 Miniature Circuit Breakers (MCBs) B 3P 40A 240V EA​ ARCA SKU:  C15-2265 Brand:  Siemens MPN:  B340 UPC:  783643263734 Shipping Weight:  0.95 lbs. Shipping Height:  3.00 In...
    SKU:
    C15-2265
    Type:
    Molded Case
    Type:
    Branch
    Type:
    BL
    Approval:
    UL 489
    Volts:
    240 VAC
    Amps:
    32 A
    Poles:
    3
    Interrupting Rating:
    10 kA
    Application:
    Electrical Distribution
    Installation:
    Bolt-On
    Short Description:
    240 VAC, 40 A, 10 kA, 3-Pole, Bolt-On Mount, Molded Case, Branch, Common Trip
    Catalog:
    SiemensAG_00876_5_18_5_19_CAT.pdf
    TS PIK:
    21368401
    Voltage Rating:
    240 VAC
    Number of Poles:
    3
    Current Rating:
    40 A
    Mounting:
    Bolt-On
    Series:
    B
    Country of Origin:
    Mexico
    MSRP $651.00
    Surplus $97.34
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    Qty in Cart: 0
    Price:
    MSRP $651.00
    Surplus $97.34
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    Siemens BF240 Miniature Circuit Breakers (MCBs)
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    Siemens BF240 Miniature Circuit Breakers (MCBs)

    MSRP $486.00
    Surplus $131.22
    SKU:  C15-15496 Brand:  Siemens MPN:  BF240 UPC:  78364327401 Shipping Weight:  0.00 lbs. Shipping Height:  0.00 In. Shipping Length:  0.00 In. Shipping Width:  0.00 In...
    SKU:
    C15-15496
    Type:
    Circuit Interrupter
    Interrupting Rating:
    10 kA
    Number of Poles:
    2
    Short Description:
    120/240 VAC, 40 A, 10 kA, 5 mA, 2-Pole, Bolt-On Mount, BLF Frame, Common Trip, GFCI, Thermal Magnetic Trip Unit, Molded Case Circuit Breaker for Panelboard
    Size:
    2 Inch W
    Data Sheet:
    SiemensAG_05319_1_DATA.pdf
    Voltage Rating:
    120/240 VAC
    Trip Sensitivity:
    5 MilliA
    Approval:
    UL 489/943, CSA C22.2
    Terminal Type:
    Load Lug
    Wire Size:
    8 to 6 AWG (Copper), 8 to 4 AWG (Aluminum)
    Country of Origin:
    PHL
    Used On:
    Loadcenter, P1/P2/P3/P4/P5 Panelboard
    Mounting:
    Bolt-On
    Current Rating:
    40 A
    MSRP $486.00
    Surplus $131.22
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    Qty in Cart: 0
    Price:
    MSRP $486.00
    Surplus $131.22
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  • Siemens BF240A Miniature Circuit Breakers (MCBs) EA
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    Siemens BF240A Miniature Circuit Breakers (MCBs) EA

    MSRP $600.00
    Surplus $285.90
    SKU:  C15-10354 Brand:  Siemens MPN:  BF240A UPC:  88762121543 Shipping Weight:  0.00 lbs. Shipping Height:  0.00 In. Shipping Length:  0.00 In. Shipping Width:  0.00 In...
    SKU:
    C15-10354
    TS PIK:
    127112409
    Short Description:
    120/240 VAC, 40 A, 10 kA Interrupt, 5 mA Trip Level, 2-Pole, Circuit Protector, Low Vage, Type BLFB, Molded Case Ground Fault Circuit Breaker
    Voltage Rating:
    120/240 VAC
    Terminal Type:
    Load Lug
    Mounting:
    Bolt-On
    Number of Poles:
    2
    Size:
    2 Inch Width
    Catalog:
    SiemensAG_23946_10_17_CAT.pdf
    Interrupting Rating:
    10 kA
    Current Rating:
    40 A
    Installation/Operator:
    SiemensAG_00697_INST.pdf
    Used On:
    Load Center, Panelboard
    Data Sheet:
    SiemensAG_10286_1_DATA.pdf
    Type:
    Molded Case, Low Vage, Thermal Magnetic
    Country of Origin:
    Philippines
    Trip Sensitivity:
    5 MilliA
    Approval:
    UL 943, CSA
    MSRP $600.00
    Surplus $285.90
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    Qty in Cart: 0
    Price:
    MSRP $600.00
    Surplus $285.90
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  • Siemens BQ2B040 Miniature Circuit Breakers (MCBs) 2P 40A 120V
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    Siemens BQ2B040 Miniature Circuit Breakers (MCBs) 2P 40A 120V

    MSRP $192.50
    Surplus $54.01
    Siemens BQ2B040 Miniature Circuit Breakers (MCBs) 2P 40A 120V​ ARCA SKU:  C15-2270 Brand:  Siemens MPN:  BQ2B040 UPC:  78364310243 Shipping Weight:  1.75 lbs. Shipping Height:  3.00 In...
    SKU:
    C15-2270
    TS PIK:
    21366179
    Voltage Rating:
    120/240 VAC at 50/60 Hz (UL)
    Type:
    Molded Case, Thermal and Fixed Magnetic Trip, Common Trip
    Mounting:
    Bolt-On
    Series:
    BQ
    Terminal Type:
    Load Lug
    Short Description:
    120/240 VAC, 40 A, 10 kA Interrupt, 2-Pole, BQ-Frame, Load Lug Terminal, Bolt-On Mount, Thermal Magnetic, Common Trip, Molded Case Circuit Breaker
    Current Rating:
    40 A
    Interrupting Rating:
    10 kA at 120/240 VAC Symmetrical (UL)
    Catalog:
    SiemensAG_00876_1_5_5_18_5_24_CAT.pdf
    Used On:
    P1/P2/P3/P4/P5 Panelboard
    Wire Size:
    8 to 6 AWG (Copper), 8 to 4 AWG (Aluminum)
    Size:
    2 Inch W x 3 Inch D x 3-3/4 Inch H
    Number of Poles:
    2
    Country of Origin:
    Mexico
    Approval:
    UL 489, CSA C22.2
    MSRP $192.50
    Surplus $54.01
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    Qty in Cart: 0
    Price:
    MSRP $192.50
    Surplus $54.01
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  • Siemens BQ3B040 Miniature Circuit Breakers (MCBs) BQ 3P 40A 240V EA Siemens BQ3B040 Miniature Circuit Breakers (MCBs) BQ 3P 40A 240V EA
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    Siemens BQ3B040 Miniature Circuit Breakers (MCBs) BQ 3P 40A 240V EA

    MSRP $295.00
    Surplus $24.46
    Siemens BQ3B040 Miniature Circuit Breakers (MCBs) BQ 3P 40A 240V EA​ ARCA SKU:  C15-2268 Brand:  Siemens MPN:  BQ3B040 UPC:  783643102613 Shipping Weight:  1.05 lbs. Shipping Height:  3.00...
    SKU:
    C15-2268
    Series:
    BQ
    Type:
    Molded Case
    Type:
    Thermal Magnetic
    Type:
    Common Trip
    Approval:
    UL 489
    Size:
    4.7 Inch Width x 12.7 Inch Depth x 3.7 Inch Height
    Volts:
    240 VAC
    Amps:
    32 A
    Poles:
    3
    Mounting:
    Bolt-On
    Interrupting Rating:
    10 kA
    Terminal Type:
    Lug-In/Lug-Out with Insta-Wire
    Short Description:
    240 VAC, 50 A, 10 kA Interrupt, 3-Pole, BQ-Frame, Load Lug Terminal, Bolt-On Mount, Thermal Magnetic, Common Trip
    Catalog:
    SiemensAG_00876_1_5_5_18_5_24_CAT.pdf
    Data Sheet:
    SiemensAG_01611_1_DATA.pdf
    TS PIK:
    21366197
    Current Rating:
    40 A
    Voltage Rating:
    240 VAC
    Number of Poles:
    3
    Country of Origin:
    Mexico
    MSRP $295.00
    Surplus $24.46
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    Qty in Cart: 0
    Price:
    MSRP $295.00
    Surplus $24.46
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    Square D QOB140HID Molded Case Breakers (MCCBs)
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    Square D QOB140HID Molded Case Breakers (MCCBs)

    MSRP $42.00
    Surplus $11.34
    SKU:  C15-17842 Brand:  Square D MPN:  QOB140HID UPC:   Shipping Weight:  0.00 lbs. Shipping Height:  0.00 In. Shipping Length:  0.00 In. Shipping Width:  0.00 In. Product...
    SKU:
    C15-17842
    Wire Size:
    8 to 2 AWG (Aluminum/Copper)
    Short Description:
    120/240 VAC 50/60 Hz, 40 A, 10 kA Interrupt, 1-Pole, Bolt-On Mount, 1-Panel Space, Box Lug Terminal, High Intensity Discharge, Miniature Circuit Breaker
    Current Rating:
    40 A
    Series:
    QOB-HID
    Interrupting Rating:
    10 kA
    Type:
    Thermal Magnetic
    Size:
    0.75 Inch W x 2.91 Inch D x 3 Inch H
    Installation/Operator:
    SchneiderElectric-SquareD_00832_INST.pdf
    Terminal Type:
    Box Lug
    Poles:
    1
    Mounting:
    Bolt-On
    Data Sheet:
    SchneiderElectric-SquareD_15131_1_2_DATA.pdf
    Voltage Rating:
    120/240 VAC at 50/60 Hz (UL/CSA)
    Used On:
    NQ and NQOD Panelboard/Interior
    Application:
    Fluorescent/HID Lighting
    Catalog:
    SchneiderElectric_00260_9_15_CAT.pdf
    Approval:
    UL, CSA
    MSRP $42.00
    Surplus $11.34
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    Qty in Cart: 0
    Price:
    MSRP $42.00
    Surplus $11.34
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  • Square D QOB240 Miniature Circuit Breakers (MCBs) 2P 40A 120V
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    Square D QOB240 Miniature Circuit Breakers (MCBs) 2P 40A 120V

    MSRP $91.54
    Surplus $31.04
    Square D QOB240 Miniature Circuit Breakers (MCBs) 2P 40A 120V​ ARCA SKU:  C15-6628 Brand:  Square D MPN:  QOB240 UPC:  78590141694 Shipping Weight:  1.25 lbs. Shipping Height:  4.00 In...
    SKU:
    C15-6628
    TS PIK:
    123180737
    Installation/Operator:
    SchneiderElectric-SquareD_02166_INST.pdf
    Data Sheet:
    SchneiderElectric_21328_1_2_DATA.pdf
    Used On:
    NQ Merchandised Panelboard
    Catalog:
    SchneiderElectric-SquareD_32357_9_10_CAT.pdf
    Current Rating:
    40 A
    Number of Poles:
    2
    Type:
    Miniature, Standard
    Short Description:
    120/240 VAC 50/60 Hz, 48 VDC, 40 A, 10 kA, 2-Pole, Q-Frame, Bolt-On Mount, Box Lug Terminal, Miniature, Standard, Panelboard Circuit Breaker
    Interrupting Rating:
    10 kA at 120/240 VAC, 5 kA at 48 VDC
    Voltage Rating:
    120/240 VAC 50/60 Hertz, 48 VDC
    Series:
    QOB
    Mounting:
    Bolt-On
    Country of Origin:
    Mexico
    Approval:
    UL, CSA
    Installation:
    Bolt-On
    MSRP $91.54
    Surplus $31.04
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    Qty in Cart: 0
    Price:
    MSRP $91.54
    Surplus $31.04
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  • Square D QOB240EPD Miniature Circuit Breakers (MCBs)
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    Square D QOB240EPD Miniature Circuit Breakers (MCBs)

    MSRP $717.88
    Surplus $243.07
    Square D QOB240EPD Miniature Circuit Breakers (MCBs)​ ARCA SKU:  C15-6552 Brand:  Square D MPN:  QOB240EPD UPC:  78590111649 Shipping Weight:  1.05 lbs. Shipping Height:  2.00 In...
    SKU:
    C15-6552
    TS PIK:
    109594863
    Short Description:
    120/240 VAC 50/60 Hz, 40 A, 10 kA Interrupt, 2-Pole, Bolt-On Mount, 2-Panel Space, Box Lug Terminal, 30 mA Class B Ground Fault, Miniature Circuit Breaker
    Current Rating:
    40 A
    Type:
    Thermal Magnetic, Miniature
    Terminal Type:
    Box Lug
    Voltage Rating:
    120/240 VAC
    Size:
    1.5 Inch Width x 2.91 Inch Depth x 4.12 Inch Height
    Mounting:
    Bolt-On
    Interrupting Rating:
    10 kA
    Number of Poles:
    2
    Catalog:
    SchneiderElectric-SquareD_03283_9_14_CAT.pdf
    Used On:
    NQ/NQOD Panelboard
    Wire Size:
    12 to 4 AWG (Aluminum), 14 to 6 AWG (Copper)
    Data Sheet:
    SchneiderElectric-SquareD_15170_1_2_DATA.pdf
    Installation/Operator:
    SchneiderElectric-SquareD_00133_INST.pdf
    Prop 65 Warning:
    Yes
    Country of Origin:
    Mexico
    Trip Sensitivity:
    30 MilliA
    Approval:
    UL, CSA
    MSRP $717.88
    Surplus $243.07
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    Qty in Cart: 0
    Price:
    MSRP $717.88
    Surplus $243.07
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    Square D QOB240GFI Molded Case Breakers (MCCBs)
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    Square D QOB240GFI Molded Case Breakers (MCCBs)

    MSRP $653.00
    Surplus $176.31
    SKU:  C15-18870 Brand:  Square D MPN:  QOB240GFI UPC:  78590136295 Shipping Weight:  0.00 lbs. Shipping Height:  0.00 In. Shipping Length:  0.00 In. Shipping Width:  0.00 In...
    SKU:
    C15-18870
    Wire Size:
    12 to 4 AWG (Aluminum), 14 to 6 AWG (Copper)
    Prop 65 Warning:
    Yes
    Used On:
    NQOD Panelboard/Interior
    Series:
    QOB-GFI
    Current Rating:
    40 A
    Number of Poles:
    2
    Type:
    Thermal Magnetic, Common Trip, Equipment Protector
    Terminal Type:
    Box Lug
    Data Sheet:
    SchneiderElectric-SquareD_15171_1_2_DATA.pdf
    Catalog:
    SchneiderElectric-SquareD_03283_9_14_CAT.pdf
    Size:
    1.5 Inch W x 2.91 Inch D x 4.12 Inch H
    Mounting:
    Bolt-On
    Short Description:
    120/240 VAC 50/60 Hz, 40 A, 10 kA Interrupt, 2-Pole, Bolt-On Mount, 2-Panel Space, Box Lug Terminal, Pigtail, 6 mA Class A Ground Fault, Miniature Circuit Breaker
    Interrupting Rating:
    10 kA
    Voltage Rating:
    120/240 VAC at 50/60 Hz (UL/CSA)
    Approval:
    UL, CSA
    Installation/Operator:
    SchneiderElectric-SquareD_00198_INST.pdf
    MSRP $653.00
    Surplus $176.31
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    Qty in Cart: 0
    Price:
    MSRP $653.00
    Surplus $176.31
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  • THQB32040 Miniature Circuit Breakers (MCBs) THQB 3P 40A 240V THQB32040 Miniature Circuit Breakers (MCBs) THQB 3P 40A 240V
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    THQB32040 Miniature Circuit Breakers (MCBs) THQB 3P 40A 240V

    MSRP $393.25
    Surplus $75.60
    THQB32040 Miniature Circuit Breakers (MCBs) THQB 3P 40A 240V​ ARCA SKU:  C15-2470 Brand:   MPN:  THQB32040 UPC:  783164012422 Shipping Weight:  1.15 Shipping Height:  3.00 In. Shipping...
    SKU:
    C15-2470
    Amps:
    40 A
    Terminal Type:
    Bolt-On
    Type:
    Thermal Magnetic
    Type:
    Compact
    Short Description:
    240 VAC, 40 A, 10 kA, 3-Pole, 8 to 3 AWG Copper/Aluminum, 1" Bolt-On Mount, Q-Line Frame, Molded Case, Non-Interchangeable/Common Trip, Compact, Fixed Thermal Magnetic, Circuit Breaker
    Current Rating:
    40 A
    Catalog:
    ABBElectrificationProducts-ABBGEIndustrialSolutions_00015_6_8_6_35_CAT.pdf
    Installation/Operator:
    ABBElectrificationProducts-ABBGEIndustrialSolutions_00005_INST.pdf
    Mounting:
    Bolt-On
    Number of Poles:
    3
    Series:
    THQB
    Country of Origin:
    United States
    MSRP $393.25
    Surplus $75.60
    See Availability Quick view
    Qty in Cart: 0
    Price:
    MSRP $393.25
    Surplus $75.60
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