Miniature Circuit Breakers (MCBs)

Miniature Circuit Breakers (MCBs)

Miniature Circuit Breakers (MCBs)

A miniature circuit breaker (MCB) is a type of electrical breaker that is designed to protect electrical circuits from damage due to overloading, short-circuiting, or other electrical faults. MCBs are commonly used in residential and light commercial electrical systems, and are typically smaller in size than traditional circuit breakers.

  • Product
  • Qty in Cart
  • Price
  • Contact Us For Quote
    Siemens Q340 Miniature Circuit Breakers (MCBs) 3P 40A Siemens Q340 Miniature Circuit Breakers (MCBs) 3P 40A

    Siemens Q340 Miniature Circuit Breakers (MCBs) 3P 40A

    MSRP $329.00
    Surplus $58.80
    Siemens Q340 Miniature Circuit Breakers (MCBs) 3P 40A​ ARCA SKU:  C15-6220 Brand:  Siemens MPN:  Q340 UPC:  66286200434 Shipping Weight:  0.90 lbs. Shipping Height:  3.00 In. Shipping...
    SKU:
    C15-6220
    TS PIK:
    21367351
    Voltage Rating:
    240 V
    Current Rating:
    40 A
    Used On:
    Load Centre Main, Feeder
    Installation/Operator:
    SiemensAG_00215_INST.pdf
    Size:
    3.7 Inch Width x 12.8 Inch Depth x 3.4 Inch Height
    Number of Poles:
    3
    Mounting:
    Plug-On
    Short Description:
    240 VAC, 40 A, 10 kA, 3-Pole, 8 to 6 AWG Copper/8 to 4 AWG Aluminum, Load Lug Terminal, Plug-In Mount, QP Frame, Common Trip, Thermal Magnetic Trip Unit, Miniature Circuit Breaker for Load Center
    Interrupting Rating:
    10 kA
    Type:
    Thermal Magnetic, Common Trip
    Catalog:
    SiemensAG_00562_1_41_1_46_1_47_CAT.pdf
    Data Sheet:
    SiemensAG_07063_1_DATA.pdf
    Country of Origin:
    Mexico
    Approval:
    UL 489
    MSRP $329.00
    Surplus $58.80
    Qty in Cart: 0
    Price:
    MSRP $329.00
    Surplus $58.80
  • Eaton BR340 Miniature Circuit Breakers (MCBs) 3P 40A 240V EA Eaton BR340 Miniature Circuit Breakers (MCBs) 3P 40A 240V EA

    Eaton BR340 Miniature Circuit Breakers (MCBs) 3P 40A 240V EA

    MSRP $337.57
    Surplus $63.00
    Eaton BR340 Miniature Circuit Breakers (MCBs) 3P 40A 240V EA​ ARCA SKU:  C15-1259 Brand:  Eaton MPN:  BR340 UPC:  786676367851 Shipping Weight:  0.95 lbs. Shipping Height:  4.00 In...
    SKU:
    C15-1259
    Series:
    BR
    Type:
    Common Trip
    Type:
    Quadplex
    Volts:
    240 VAC
    Amps:
    32 A
    Used On:
    BR Series Load Center
    Poles:
    3
    Mounting:
    Plug-On
    Interrupting Rating:
    10 kA
    Wire Size:
    14 to 4 AWG (Copper/Aluminum)
    Short Description:
    240 VAC, 40 A, 10 kA, 3-Pole, Plug-On Mount, Common Trip
    Catalog:
    Eaton_36620_V1T1_85_CAT.pdf
    TS PIK:
    21493897
    Number of Poles:
    3
    Current Rating:
    40 A
    Voltage Rating:
    240 VAC
    Country of Origin:
    Dominican Republic
    MSRP $337.57
    Surplus $63.00
    Qty in Cart: 0
    Price:
    MSRP $337.57
    Surplus $63.00
  • Eaton CH340 Miniature Circuit Breakers (MCBs) CH 3P 40A 240V 50/60Hz 3Ph EA Eaton CH340 Miniature Circuit Breakers (MCBs) CH 3P 40A 240V 50/60Hz 3Ph EA

    Eaton CH340 Miniature Circuit Breakers (MCBs) CH 3P 40A 240V 50/60Hz 3Ph EA

    MSRP $420.00
    Surplus $125.86
    Eaton CH340 Miniature Circuit Breakers (MCBs) CH 3P 40A 240V 50/60Hz 3Ph EA​ ARCA SKU:  C15-2808 Brand:  Eaton MPN:  CH340 UPC:  782113102078 Shipping Weight:  0.90 lbs. Shipping...
    SKU:
    C15-2808
    Approval:
    UL 489
    Approval:
    CSA
    Amps:
    40 A
    Interrupting Rating:
    10 kA
    Mounting:
    Plug-On
    Poles:
    3
    Terminal Type:
    Thermal Magnetic
    Type:
    Common Trip
    Used On:
    CH Series Load Center
    Volts:
    240 VAC
    Gauge:
    10 to 1/0 AWG (Copper/Aluminum)
    Short Description:
    240 VAC, 40 A, 10 kA, 3-Pole, Plug-On Mount, Common Trip, Thermal Magnetic, Circuit Breaker
    Series:
    CH
    TS PIK:
    531277
    Current Rating:
    40 A
    Voltage Rating:
    240 VAC
    Number of Poles:
    3
    Catalog:
    Eaton_36620_V1T1_36_V1T1_37_CAT.pdf
    Wire Size:
    10 to 1/0 AWG (Copper/Aluminum)
    Country of Origin:
    Dominican Republic
    MSRP $420.00
    Surplus $125.86
    Qty in Cart: 0
    Price:
    MSRP $420.00
    Surplus $125.86
  • Contact Us For Quote
    Murray MP340 Miniature Circuit Breakers (MCBs)

    Murray MP340 Miniature Circuit Breakers (MCBs)

    MSRP $512.10
    Surplus $43.35
    Murray MP340 Miniature Circuit Breakers (MCBs)​ ARCA SKU:  C15-6302 Brand:  Murray MPN:  MP340 UPC:   Shipping Weight:  1.10 lbs. Shipping Height:  5.00 In. Shipping Length:  4...
    SKU:
    C15-6302
    Short Description:
    240 VAC, 40 A, 10 kA, 3-Pole, Plug-In Mount, MP-T Frame, Thermal Magnetic Trip Unit, Miniature Circuit Breaker
    Number of Poles:
    3
    Interrupting Rating:
    10 kA
    Type:
    Common Trip
    Used On:
    Loadcenter
    Installation/Operator:
    SiemensAG_00215_INST.pdf
    Size:
    3 Inch W x 3 Inch D x 3 1/8 Inch H
    Current Rating:
    40 A
    Terminal Type:
    Load Lug
    Data Sheet:
    SiemensAG_06651_1_DATA.pdf
    Mounting:
    Plug-On
    Voltage Rating:
    240 VAC
    Series:
    MP-T
    Wire Size:
    8 to 6 AWG (Copper), 8 to 4 AWG (Aluminum)
    Country of Origin:
    Mexico
    MSRP $512.10
    Surplus $43.35
    Qty in Cart: 0
    Price:
    MSRP $512.10
    Surplus $43.35
  • Siemens Q34000S01 Miniature Circuit Breakers (MCBs) 120V Siemens Q34000S01 Miniature Circuit Breakers (MCBs) 120V

    Siemens Q34000S01 Miniature Circuit Breakers (MCBs) 120V

    MSRP $598.00
    Surplus $192.94
    SKU:  C15-6195 Brand:  Siemens MPN:  Q34000S01 UPC:  78364323763 Shipping Weight:  1.45 lbs. Shipping Height:  4.00 In. Shipping Length:  6.00 In. Shipping Width:  5.00 In...
    SKU:
    C15-6195
    TS PIK:
    120844146
    Current Rating:
    40 A
    Voltage Rating:
    240 VAC at 50/60 Hz
    Catalog:
    SiemensAG_00562_1_41_1_46_1_47_CAT.pdf
    Used On:
    Loadcenter
    Size:
    3 Inch W x 3 Inch D x 3-1/8 Inch H
    Terminal Type:
    Load Lug
    Number of Poles:
    3
    Installation/Operator:
    SiemensAG_00215_INST.pdf
    Wire Size:
    8 to 6 AWG (Copper), 8 to 4 AWG (Aluminum)
    Mounting:
    Plug-On
    Interrupting Rating:
    10 kA
    Data Sheet:
    SiemensAG_07064_1_DATA.pdf
    Type:
    Thermal and Fixed Magnetic, Common Trip
    Short Description:
    240 VAC, 40 A, 10 kA, 3-Pole, 8 to 6 AWG Copper/8 to 4 AWG Aluminum, Load Lug Terminal, Plug-In Mount, QP Frame, 120 VAC Shunt Trip, Thermal Magnetic Trip Unit, Miniature Circuit Breaker for Load Center
    Approval:
    UL 489, CSA C22.2
    Country of Origin:
    MEX
    MSRP $598.00
    Surplus $192.94
    Qty in Cart: 0
    Price:
    MSRP $598.00
    Surplus $192.94
  • Contact Us For Quote
    Crouse-Hinds BR340 Miniature Circuit Breakers (MCBs)

    Crouse-Hinds BR340 Miniature Circuit Breakers (MCBs)

    MSRP $337.57
    Surplus $118.02
    Crouse-Hinds BR340 Miniature Circuit Breakers (MCBs)​ ARCA SKU:  C15-5667 Brand:  Crouse-Hinds MPN:  BR340 UPC:   Shipping Weight:  0.00 lbs. Shipping Height:  0.00 In. Shipping...
    SKU:
    C15-5667
    TS PIK:
    21493897
    Type:
    Common Trip
    Short Description:
    240 VAC, 40 A, 10 kA, 3-Pole, Plug-On Mount, Common Trip, Circuit Breaker
    Series:
    BR
    Mounting:
    Plug-On
    Current Rating:
    40 A
    Voltage Rating:
    240 VAC
    Interrupting Rating:
    10 kA
    Number of Poles:
    3
    Used On:
    BR Series Load Center
    Wire Size:
    14 to 4 AWG (Copper/Aluminum)
    Catalog:
    Eaton_36620_V1T1_85_CAT.pdf
    MSRP $337.57
    Surplus $118.02
    Qty in Cart: 0
    Price:
    MSRP $337.57
    Surplus $118.02
  • Contact Us For Quote
    Eaton CHP340 Miniature Circuit Breakers (MCBs)

    Eaton CHP340 Miniature Circuit Breakers (MCBs)

    MSRP $989.00
    Surplus $267.03
    SKU:  C15-19384 Brand:  Eaton MPN:  CHP340 UPC:  78211392387 Shipping Weight:  0.00 lbs. Shipping Height:  0.00 In. Shipping Length:  0.00 In. Shipping Width:  0.00 In...
    SKU:
    C15-19384
    Type:
    Thermal Magnetic
    Current Rating:
    40 A
    Short Description:
    240 VAC, 40 A, 3-Pole, 10 kA, Thermal Magnetic, Circuit Breaker
    Voltage Rating:
    240 VAC
    Series:
    CHP
    Number of Poles:
    3
    Wire Size:
    10 to 1/0 AWG (Copper/Aluminum)
    Interrupting Rating:
    10 kA at 240 VAC
    Used On:
    CH Series Loadcenter
    Terminal Type:
    Line Lug
    Catalog:
    Eaton_00001_V1T1_41_CAT.pdf
    Mounting:
    Plug-On
    Approval:
    UL 489
    MSRP $989.00
    Surplus $267.03
    Qty in Cart: 0
    Price:
    MSRP $989.00
    Surplus $267.03
  • GE THHQL32040 Miniature Circuit Breakers (MCBs)

    GE THHQL32040 Miniature Circuit Breakers (MCBs)

    MSRP $445.79
    Surplus $117.16
    GE THHQL32040 Miniature Circuit Breakers (MCBs)​ ARCA SKU:  C15-5908 Brand:  GE MPN:  THHQL32040 UPC:   Shipping Weight:  0.00 lbs. Shipping Height:  0.00 In. Shipping...
    SKU:
    C15-5908
    Type:
    Thermal Magnetic, Compact
    Terminal Type:
    Plug-On
    Current Rating:
    40 A
    Interrupting Rating:
    22 kA at 120/240 VAC
    Number of Poles:
    3
    Short Description:
    120/240 VAC, 40 A, 22 kA, 3-Pole, 8 to 3 AWG, Q-Line Frame, Plug-In Terminal, Thermal Magnetic, Compact, Non-Interchangeable Circuit Breaker
    Voltage Rating:
    120/240 VAC
    Mounting:
    Plug-On
    Frame Type:
    Q-Line
    Approval:
    UL
    Maximum AC Voltage Rating:
    240 V
    Country of Origin:
    United States
    MSRP $445.79
    Surplus $117.16
    Qty in Cart: 0
    Price:
    MSRP $445.79
    Surplus $117.16
  • GENERAL ELECTRIC THQL32040 Miniature Circuit Breakers (MCBs) 3P 40A 240V

    GENERAL ELECTRIC THQL32040 Miniature Circuit Breakers (MCBs) 3P 40A 240V

    MSRP $294.93
    Surplus $60.65
    GENERAL ELECTRIC THQL32040 Miniature Circuit Breakers (MCBs) 3P 40A 240V​ ARCA SKU:  C15-5935 Brand:  GENERAL ELECTRIC MPN:  THQL32040 UPC:  78316401303 Shipping Weight:  1.10 lbs. Shipping...
    SKU:
    C15-5935
    Catalog:
    ABBElectrificationProducts-ABBGEIndustrialSolutions_00015_6_8_6_31_CAT.pdf
    Short Description:
    240 VAC, 40 A, 10 kA, 3-Pole, 8 to 3 AWG Copper/Aluminum, 1" Plug-In Mount, Box Terminal, Q-Line Frame, Molded Case, Non-Interchangeable/Internal Common Trip, Compact, Fixed Thermal Magnetic, Circuit Breaker
    Current Rating:
    40 A
    Number of Poles:
    3
    Interrupting Rating:
    10 kA at 120/240 VAC
    Terminal Type:
    Plug-On
    Voltage Rating:
    120/240 VAC
    Type:
    Thermal Magnetic, Compact
    CAD Drawings:
    ABBElectrificationProducts-ABBGEIndustrialSolutions_00499_1_CAD.pdf
    Installation/Operator:
    ABBElectrificationProducts-ABBGEIndustrialSolutions_00006_INST.pdf
    Mounting:
    Plug-On
    Frame Type:
    Q-Line
    Approval:
    UL
    Maximum AC Voltage Rating:
    240 V
    Country of Origin:
    United States
    MSRP $294.93
    Surplus $60.65
    Qty in Cart: 0
    Price:
    MSRP $294.93
    Surplus $60.65
  • Contact Us For Quote
    Siemens ED23B040 Miniature Circuit Breakers (MCBs)

    Siemens ED23B040 Miniature Circuit Breakers (MCBs)

    MSRP $1,842.00
    Surplus $497.34
    SKU:  C15-15838 Brand:  Siemens MPN:  ED23B040 UPC:  78364320901 Shipping Weight:  0.00 lbs. Shipping Height:  0.00 In. Shipping Length:  0.00 In. Shipping Width:  0.00 In...
    SKU:
    C15-15838
    Short Description:
    240 VAC 50/60 Hz, 40 A, 10 kA, 3-Pole, 10 to 1/0 AWG Copper/Aluminum, Load Lug Terminal, ED Frame, Thermal Magnetic Trip Unit, Molded Case Circuit Breaker
    Current Rating:
    40 A
    Used On:
    P1/P2/P3/P4/P5 Panelboard
    Interrupting Rating:
    10 kA at 240 VAC (UL)
    Type:
    Molded Case, Thermal and Fixed Magnetic
    Catalog:
    SiemensAG_01698_17_78-17_80_CAT.pdf
    Installation/Operator:
    SiemensAG_00313_INST.pdf
    Mounting:
    Plug-On
    Country of Origin:
    MEX
    Approval:
    UL 489, CSA C22.2
    Wire Size:
    10 to 1/0 AWG (Copper/Aluminum)
    Series:
    ED2
    Size:
    3 Inch W x 4.56 Inch D x 6.35 Inch H
    Terminal Type:
    Load Lug
    Number of Poles:
    3
    Voltage Rating:
    240 VAC at 50/60 Hz (UL)
    MSRP $1,842.00
    Surplus $497.34
    Qty in Cart: 0
    Price:
    MSRP $1,842.00
    Surplus $497.34
  • Contact Us For Quote
    Siemens Q340H Miniature Circuit Breakers (MCBs)

    Siemens Q340H Miniature Circuit Breakers (MCBs)

    MSRP $538.00
    Surplus $165.86
    SKU:  C15-10566 Brand:  Siemens MPN:  Q340H UPC:  78364315644 Shipping Weight:  0.00 lbs. Shipping Height:  0.00 In. Shipping Length:  0.00 In. Shipping Width:  0.00 In...
    SKU:
    C15-10566
    TS PIK:
    115559550
    Number of Poles:
    3
    Type:
    Low Vage, Circuit Protector, Thermal and Fixed Magnetic, Common Trip
    Current Rating:
    40 A
    Size:
    3 Inch Width x 3 Inch Depth x 3 Inch Height
    Terminal Type:
    Load Lug
    Data Sheet:
    SiemensAG_10324_1_2_DATA.pdf
    Wire Size:
    8 to 6 AWG (Copper), 8 to 4 AWG (Aluminum)
    Installation/Operator:
    SiemensAG_00053_INST.pdf
    Used On:
    Load Center
    Voltage Rating:
    240 VAC 50/60 Hertz
    Mounting:
    Plug-On
    Catalog:
    SiemensAG_01796_7_6_7_20_7_26_7_27_CAT.pdf
    Interrupting Rating:
    22 kA
    Country of Origin:
    Mexico
    Short Description:
    BREAKER 40A 3P 240V 22K QPH
    Approval:
    UL 489, CSA C22.2
    MSRP $538.00
    Surplus $165.86
    Qty in Cart: 0
    Price:
    MSRP $538.00
    Surplus $165.86
  • Square D QO340 Miniature Circuit Breakers (MCBs) 3P 40A 240V

    Square D QO340 Miniature Circuit Breakers (MCBs) 3P 40A 240V

    MSRP $273.00
    Surplus $67.20
    Square D QO340 Miniature Circuit Breakers (MCBs) 3P 40A 240V​ ARCA SKU:  C15-4924 Brand:  Square D MPN:  QO340 UPC:  78590140076 Shipping Weight:  0.85 lbs. Shipping Height:  3.00 In...
    SKU:
    C15-4924
    Series:
    QO
    Type:
    Common Trip
    Type:
    Miniature
    Type:
    Standard
    Approval:
    UL
    Approval:
    CSA
    Size:
    2.24 Inch Width x 2.91 Inch Depth x 2.99 Inch Height
    Volts:
    120/240 VAC 50/60 Hertz
    Volts:
    48 VDC
    Amps:
    32 A
    Used On:
    QO Load Center
    Used On:
    NQ/NQOD Panelboard/OEM Interior/Speed-D Switchboard Distribution Panel
    Poles:
    3
    Mounting:
    Plug-On
    Interrupting Rating:
    5/10 kA
    Terminal Type:
    Box Lug
    Wire Size:
    8 to 2 AWG (Copper/Aluminum)
    Short Description:
    120/240 VAC 50/60 Hz, 48 VDC, 40 A, 5/10 kA Interrupt, 3-Pole, 8 to 2 AWG Copper/Aluminum, Plug-In Mount, Box Lug Terminal, Standard
    Catalog:
    SchneiderElectric-SquareD_32357_1_2_1_3_CAT.pdf
    Data Sheet:
    SchneiderElectric-SquareD_53592_1_2_DATA.pdf
    Installation/Operator:
    SchneiderElectric-SquareD_01265_INST.pdf
    Manufacturer Warranty:
    SchneiderElectric-SquareD_00002_WARR.pdf
    TS PIK:
    21371537
    Current Rating:
    40 A
    Voltage Rating:
    120/240 VAC 50/60 Hertz, 48 VDC
    Number of Poles:
    3
    Country of Origin:
    Mexico
    MSRP $273.00
    Surplus $67.20
    Qty in Cart: 0
    Price:
    MSRP $273.00
    Surplus $67.20
  • Square D QO3401021 Miniature Circuit Breakers (MCBs) QO 3P 40A 240V 50/60Hz 3Ph

    Square D QO3401021 Miniature Circuit Breakers (MCBs) QO 3P 40A 240V 50/60Hz 3Ph

    MSRP $498.00
    Surplus $505.40
    Square D QO3401021 Miniature Circuit Breakers (MCBs) QO 3P 40A 240V 50/60Hz 3Ph​ ARCA SKU:  C15-4849 Brand:  Square D MPN:  QO3401021 UPC:  785901494126 Shipping Weight:  1.20 Shipping...
    SKU:
    C15-4849
    Type:
    Common Trip
    Type:
    Thermal Magnetic
    Approval:
    UL
    Approval:
    CSA
    Size:
    2.25 Inch W x 2.91 Inch D x 3 Inch H
    Volts:
    240 VAC at 50/60 Hz
    Amps:
    32 A
    Used On:
    QO Load Center
    Used On:
    NQOD Panelboard
    Used On:
    OEM Interior/Speed-D Switchboard Distribution Panel
    Poles:
    3
    Mounting:
    Plug-On
    Interrupting Rating:
    10 kA
    Terminal Type:
    Box Lug
    Wire Size:
    8 to 2 AWG (Aluminum/Copper)
    Short Description:
    120/240 VAC 50/60 Hz, 40 A, 10 kA Interrupt, 3-Pole, 8 to 2 AWG Aluminum/Copper, Plug-In Mount, Box Lug Terminal, Standard, AC Shunt Trip
    Catalog:
    SchneiderElectric-SquareD_03264_1_3_1_9_CAT.pdf
    Data Sheet:
    SchneiderElectric-SquareD_15051_1_2_DATA.pdf
    Country of Origin:
    United States
    Voltage Rating:
    240 VAC at 50/60 Hz
    Current Rating:
    40 A
    Number of Poles:
    3
    MSRP $498.00
    Surplus $505.40
    Qty in Cart: 0
    Price:
    MSRP $498.00
    Surplus $505.40
  • Square D QO340VH Miniature Circuit Breakers (MCBs)

    Square D QO340VH Miniature Circuit Breakers (MCBs)

    MSRP $371.00
    Surplus $222.75
    SKU:  C15-10905 Brand:  Square D MPN:  QO340VH UPC:  78590106020 Shipping Weight:  0.00 lbs. Shipping Height:  0.00 In. Shipping Length:  0.00 In. Shipping Width:  0.00 In...
    SKU:
    C15-10905
    TS PIK:
    111081736
    Wire Size:
    8 to 2 AWG (Copper/Aluminum)
    Data Sheet:
    SchneiderElectric-SquareD_53594_1_2_DATA.pdf
    Used On:
    QO Load Center, NQ/NQOD Panelboard/OEM Interior/Speed-D Switchboard Distribution Panel
    Catalog:
    SchneiderElectric-SquareD_32357_1_2_1_3_CAT.pdf
    Interrupting Rating:
    22 kA
    Current Rating:
    40 A
    Mounting:
    Plug-On
    Terminal Type:
    Box Lug
    Voltage Rating:
    120/240 VAC 50/60 Hertz
    Series:
    QO
    Type:
    Common Trip, Miniature, Standard
    Short Description:
    120/240 VAC 50/60 Hz, 40 A, 22 kA Interrupt, 3-Pole, 8 to 2 AWG Copper/Aluminum, Plug-On Mount, Box Lug Terminal, Standard, Miniature Circuit Breaker
    Size:
    2.24 Inch Width x 2.91 Inch Depth x 3.11 Inch Height
    Installation/Operator:
    SchneiderElectric-SquareD_01265_INST.pdf
    Number of Poles:
    3
    Approval:
    UL, CSA
    Country of Origin:
    Mexico
    MSRP $371.00
    Surplus $222.75
    Qty in Cart: 0
    Price:
    MSRP $371.00
    Surplus $222.75

Adding your products to cart

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.