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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  • Square D QO345 Miniature Circuit Breakers (MCBs)
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    Square D QO345 Miniature Circuit Breakers (MCBs)

    MSRP $248.00
    Surplus $47.64
    Square D QO345 Miniature Circuit Breakers (MCBs)​ ARCA SKU:  C15-6588 Brand:  Square D MPN:  QO345 UPC:  78590101248 Shipping Weight:  0.85 lbs. Shipping Height:  3.00 In. Shipping...
    SKU:
    C15-6588
    TS PIK:
    109595139
    Series:
    QO
    Short Description:
    120/240 VAC 50/60 Hz, 48 VDC, 45 A, 5/10 kA Interrupt, 3-Pole, 8 to 2 AWG Copper/Aluminum, Plug-In Mount, Box Lug Terminal, Standard, Miniature Circuit Breaker
    Type:
    Common Trip, Miniature, Standard
    Voltage Rating:
    120/240 VAC
    Terminal Type:
    Box Lug
    Mounting:
    Plug-On
    Current Rating:
    45 A
    Used On:
    QO Load Center, NQ/NQOD Panelboard/OEM Interior/Speed-D Switchboard Distribution Panel
    Wire Size:
    8 to 2 AWG (Copper/Aluminum)
    Number of Poles:
    3
    Data Sheet:
    SchneiderElectric-SquareD_53602_1_2_DATA.pdf
    Installation/Operator:
    SchneiderElectric-SquareD_01265_INST.pdf
    Interrupting Rating:
    5/10 kA
    Catalog:
    SchneiderElectric-SquareD_32357_1_2_1_3_CAT.pdf
    Size:
    2.24 Inch Width x 2.91 Inch Depth x 3.11 Inch Height
    Country of Origin:
    United States
    Approval:
    UL, CSA
    MSRP $248.00
    Surplus $47.64
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    Qty in Cart: 0
    Price:
    MSRP $248.00
    Surplus $47.64
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    Eaton CH345 Miniature Circuit Breakers (MCBs) EA Eaton CH345 Miniature Circuit Breakers (MCBs) EA
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    Eaton CH345 Miniature Circuit Breakers (MCBs) EA

    MSRP $376.54
    Surplus $170.24
    Eaton CH345 Miniature Circuit Breakers (MCBs) EA​ ARCA SKU:  C15-5228 Brand:  Eaton MPN:  CH345 UPC:  782113356266 Shipping Weight:  0.90 lbs. Shipping Height:  3.00 In. Shipping...
    SKU:
    C15-5228
    Series:
    CH
    Type:
    Thermal Magnetic
    Type:
    Common Trip
    Approval:
    UL 489
    Approval:
    CSA
    Volts:
    240 VAC
    Amps:
    32 A
    Used On:
    CH Series Loadcenter
    Poles:
    3
    Mounting:
    Plug-On
    Interrupting Rating:
    10 kA
    Wire Size:
    10 to 1/0 AWG (Aluminum/Copper)
    Short Description:
    240 VAC, 45 A, 10 kA, 3-Pole, Plug-On Mount, Common Trip, Thermal Magnetic
    Catalog:
    Eaton_36620_V1T1_36_V1T1_37_CAT.pdf
    TS PIK:
    111014893
    Current Rating:
    45 A
    Voltage Rating:
    240 VAC
    Number of Poles:
    3
    MSRP $376.54
    Surplus $170.24
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    Qty in Cart: 0
    Price:
    MSRP $376.54
    Surplus $170.24
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    Crouse-Hinds CH345 Miniature Circuit Breakers (MCBs)
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    Crouse-Hinds CH345 Miniature Circuit Breakers (MCBs)

    MSRP $376.54
    Surplus $134.54
    SKU:  C15-5685 Brand:  Crouse-Hinds MPN:  CH345 UPC:   Shipping Weight:  0.00 lbs. Shipping Height:  0.00 In. Shipping Length:  0.00 In. Shipping Width:  0.00 In. Product...
    SKU:
    C15-5685
    TS PIK:
    111014893
    Interrupting Rating:
    10 kA
    Type:
    Thermal Magnetic, Common Trip
    Mounting:
    Plug-On
    Current Rating:
    45 A
    Number of Poles:
    3
    Wire Size:
    10 to 1/0 AWG (Aluminum/Copper)
    Catalog:
    Eaton_36620_V1T1_36_V1T1_37_CAT.pdf
    Used On:
    CH Series Loadcenter
    Voltage Rating:
    240 VAC
    Series:
    CH
    Short Description:
    240 VAC, 45 A, 10 kA, 3-Pole, Plug-On Mount, Common Trip, Thermal Magnetic, Circuit Breaker
    Approval:
    UL 489, CSA
    MSRP $376.54
    Surplus $134.54
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    Qty in Cart: 0
    Price:
    MSRP $376.54
    Surplus $134.54
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  • Eaton BR345 Miniature Circuit Breakers (MCBs) 3P 45A 120V EA Eaton BR345 Miniature Circuit Breakers (MCBs) 3P 45A 120V EA
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    Eaton BR345 Miniature Circuit Breakers (MCBs) 3P 45A 120V EA

    MSRP $380.00
    Surplus $64.68
    Eaton BR345 Miniature Circuit Breakers (MCBs) 3P 45A 120V EA​ ARCA SKU:  C15-1261 Brand:  Eaton MPN:  BR345 UPC:  786676000116 Shipping Weight:  0.95 lbs. Shipping Height:  3.00 In...
    SKU:
    C15-1261
    Series:
    BR
    Type:
    Standard
    Approval:
    UL 489
    Volts:
    240 VAC
    Amps:
    32 A
    Used On:
    BR Series Loadcenter
    Poles:
    3
    Mounting:
    Plug-On
    Interrupting Rating:
    10 kA
    Wire Size:
    14 to 4 AWG (Aluminum/Copper)
    Short Description:
    240 VAC, 45 A, 10 kA, 3-Pole, Plug-On Mount, Common Trip, Duplex, Thermal Magnetic
    Catalog:
    Eaton_36620_V1T1_85_CAT.pdf
    Data Sheet:
    Mersen_00019_FB20_FB21_DATA.pdf
    Voltage Rating:
    240 VAC
    Current Rating:
    45 A
    Number of Poles:
    3
    Country of Origin:
    Dominican Republic
    MSRP $380.00
    Surplus $64.68
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    Qty in Cart: 0
    Price:
    MSRP $380.00
    Surplus $64.68
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    Siemens ED43B045 Everything Else
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    Siemens ED43B045 Everything Else

    MSRP $1,954.00
    Surplus $521.36
    SKU:  C15-7385 Brand:  Siemens MPN:  ED43B045 UPC:  783643209428 Shipping Weight:  3.65 lbs. Shipping Height:  6.00 In. Shipping Length:  8.00 In. Shipping Width:  5.00 In...
    SKU:
    C15-7385
    TS PIK:
    115142958
    Number of Poles:
    3
    Voltage Rating:
    480 VAC at 50/60 Hz (UL)
    Series:
    ED4
    Short Description:
    480 VAC 50/60 Hz, 45 A, 18 kA, 3-Pole, 10 to 1/0 AWG Copper/Aluminum, Load Lug Terminal, ED Frame, Thermal Magnetic Trip Unit, Molded Case Circuit Breaker
    Type:
    Molded Case, Thermal and Fixed Magnetic
    Current Rating:
    45 A
    Interrupting Rating:
    65 kA at 240 VAC, 18 kA at 480 VAC (UL)
    Size:
    3 Inch W x 4.56 Inch D x 6.35 Inch H
    Catalog:
    SiemensAG_01698_17_78-17_80_CAT.pdf
    Installation/Operator:
    SiemensAG_00313_INST.pdf
    Terminal Type:
    Load Lug
    Approval:
    UL 489, CSA C22.2
    Country of Origin:
    MEX
    Mounting:
    Plug-On
    Used On:
    P1/P2/P3/P4/P5 Panelboard
    Wire Size:
    10 to 1/0 AWG (Copper/Aluminum)
    MSRP $1,954.00
    Surplus $521.36
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    Qty in Cart: 0
    Price:
    MSRP $1,954.00
    Surplus $521.36
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    Siemens HED43B045 Molded Case Breakers (MCCBs)
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    Siemens HED43B045 Molded Case Breakers (MCCBs)

    MSRP $4,729.00
    Surplus $1,276.83
    SKU:  C15-16467 Brand:  Siemens MPN:  HED43B045 UPC:  78364321015 Shipping Weight:  0.00 lbs. Shipping Height:  0.00 In. Shipping Length:  0.00 In. Shipping Width:  0.00 In...
    SKU:
    C15-16467
    Interrupting Rating:
    100 kA at 240 VAC, 42 kA at 480 VAC (UL)
    Type:
    Molded Case, Thermal and Fixed Magnetic
    Series:
    HED4
    Approval:
    UL 489, CSA C22.2
    Country of Origin:
    MEX
    Mounting:
    Plug-On
    Terminal Type:
    Load Lug
    Wire Size:
    10 to 1/0 AWG (Copper/Aluminum)
    Short Description:
    480 VAC, 45 A, 42 kA, 3-Pole, 10 to 1/0 AWG Copper/Aluminum, Load Lug Terminal, ED Frame, Thermal Magnetic Trip Unit, Molded Case Circuit Breaker
    Installation/Operator:
    SiemensAG_00313_INST.pdf
    Catalog:
    SiemensAG_01698_17_78-17_80_CAT.pdf
    Number of Poles:
    3
    Used On:
    P1/P2/P3/P4/P5 Panelboard
    Size:
    3 Inch W x 4.56 Inch D x 6.35 Inch H
    Voltage Rating:
    480 VAC at 50/60 Hz (UL)
    Current Rating:
    45 A
    MSRP $4,729.00
    Surplus $1,276.83
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    Qty in Cart: 0
    Price:
    MSRP $4,729.00
    Surplus $1,276.83
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    Siemens Q345 Miniature Circuit Breakers (MCBs)
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    Siemens Q345 Miniature Circuit Breakers (MCBs)

    MSRP $322.50
    Surplus $76.03
    SKU:  C15-6277 Brand:  Siemens MPN:  Q345 UPC:   Shipping Weight:  0.00 lbs. Shipping Height:  0.00 In. Shipping Length:  0.00 In. Shipping Width:  0.00 In. Product...
    SKU:
    C15-6277
    Interrupting Rating:
    10 kA
    Size:
    3 Inch Width x 3 Inch Depth x 3 Inch Height
    Catalog:
    SiemensAG_00562_1_41_1_46_1_47_CAT.pdf
    Number of Poles:
    3
    Type:
    Thermal Magnetic
    Voltage Rating:
    240 V
    Short Description:
    240 VAC, 45 A, 10 kA, 3-Pole, 8 to 6 AWG Copper/8 to 4 AWG Aluminum, Load Lug Terminal, Plug-On Mount, QP Frame, Common Trip, Thermal Magnetic Trip Unit, Miniature Circuit Breaker for Load Center
    Mounting:
    Plug-On
    Current Rating:
    45 A
    Data Sheet:
    SiemensAG_07065_1_DATA.pdf
    Used On:
    Load Centre Main, Feeder
    Installation/Operator:
    SiemensAG_00215_INST.pdf
    TS PIK:
    21366646
    Approval:
    UL 489
    Country of Origin:
    MEX
    MSRP $322.50
    Surplus $76.03
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    Qty in Cart: 0
    Price:
    MSRP $322.50
    Surplus $76.03
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    Square D QO3451021 Molded Case Breakers (MCCBs)
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    Square D QO3451021 Molded Case Breakers (MCCBs)

    MSRP $532.00
    Surplus $143.64
    SKU:  C15-17805 Brand:  Square D MPN:  QO3451021 UPC:   Shipping Weight:  0.00 lbs. Shipping Height:  0.00 In. Shipping Length:  0.00 In. Shipping Width:  0.00 In. Product...
    SKU:
    C15-17805
    Short Description:
    120/240 VAC 50/60 Hz, 45 A, 10 kA Interrupt, 3-Pole, 8 to 2 AWG Aluminum/Copper, Plug-On Mount, Box Lug Terminal, Standard, AC Shunt Trip, Miniature Circuit Breaker
    Wire Size:
    8 to 2 AWG (Aluminum/Copper)
    CAD Drawings:
    SchneiderElectric-SquareD_03059_1_CAD.pdf
    Used On:
    QO Load Center, NQOD Panelboard, OEM Interior/Speed-D Switchboard Distribution Panel
    Data Sheet:
    SchneiderElectric-SquareD_15062_1_2_DATA.pdf
    Terminal Type:
    Box Lug
    Type:
    Common Trip, Thermal Magnetic
    Interrupting Rating:
    10 kA
    Approval:
    UL, CSA
    Size:
    2.25 Inch W x 2.91 Inch D x 3 Inch H
    Catalog:
    SchneiderElectric-SquareD_03264_1_3_1_9_CAT.pdf
    Current Rating:
    45 A
    Mounting:
    Plug-On
    Voltage Rating:
    240 VAC at 50/60 Hz
    Number of Poles:
    3
    MSRP $532.00
    Surplus $143.64
    Contact Us For Quote Quick view
    Qty in Cart: 0
    Price:
    MSRP $532.00
    Surplus $143.64
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