Due to our relocation, shipments may experience delays. Contact your sales rep for details and updates.

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
  • Eaton CHF150 Miniature Circuit Breakers (MCBs) CHF 1P 50A 240V 50/60Hz 1Ph EA Eaton CHF150 Miniature Circuit Breakers (MCBs) CHF 1P 50A 240V 50/60Hz 1Ph EA

    Eaton CHF150 Miniature Circuit Breakers (MCBs) CHF 1P 50A 240V 50/60Hz 1Ph EA

    MSRP $53.00
    Surplus $13.10
    Eaton CHF150 Miniature Circuit Breakers (MCBs) CHF 1P 50A 240V 50/60Hz 1Ph EA​ ARCA SKU:  C15-3912 Brand:  Eaton MPN:  CHF150 UPC:  786685532141 Shipping Weight:  0.30 Shipping Height:  1.00 In...
    SKU:
    C15-3912
    Type:
    Thermal Magnetic
    Type:
    Standard
    Approval:
    UL
    Size:
    3 Inch Length x 0.75 Inch Width x 3 Inch Height
    Volts:
    120/240 VAC
    Amps:
    32 A
    Used On:
    CH Load Center
    Poles:
    1
    Interrupting Rating:
    10 kA
    Wire Size:
    14 to 2 AWG (Aluminum/Copper)
    Short Description:
    120/240 VAC, 50 A, 1-Pole, 10 kA, Plug-On Mount, Thermal Magnetic
    Catalog:
    Eaton_00001_V1T1_37_CAT.pdf
    Voltage Rating:
    120/240 VAC
    Number of Poles:
    1
    Current Rating:
    50 A
    Mounting:
    Plug-On
    Series:
    CH
    Country of Origin:
    Dominican Republic
    MSRP $53.00
    Surplus $13.10
    Qty in Cart: 0
    Price:
    MSRP $53.00
    Surplus $13.10
  • GENERAL ELECTRIC THQB1150 Miniature Circuit Breakers (MCBs) 1P 50A 120V EA

    GENERAL ELECTRIC THQB1150 Miniature Circuit Breakers (MCBs) 1P 50A 120V EA

    MSRP $56.88
    Surplus $11.68
    GENERAL ELECTRIC THQB1150 Miniature Circuit Breakers (MCBs) 1P 50A 120V EA​ ARCA SKU:  C15-5820 Brand:  GENERAL ELECTRIC MPN:  THQB1150 UPC:  78316401221 Shipping Weight:  0.30 lbs. Shipping...
    SKU:
    C15-5820
    CAD Drawings:
    ABBElectrificationProducts-ABBGEIndustrialSolutions_04202_1_CAD.pdf
    Current Rating:
    50 A
    Short Description:
    120/240 VAC, 50 A, 1-Pole, 10 kA, 14 to 8 KCMIL/12 to 8 KCMIL Copper/Aluminum, Bolt-On Mount, Thermal Magnetic, Non-Interchangeable, Miniature Circuit Breaker
    Terminal Type:
    Bolt-On
    Catalog:
    ABBElectrificationProducts-ABBGEIndustrialSolutions_01912_6_35_CAT.pdf
    Type:
    Thermal Magnetic, Compact
    Number of Poles:
    1
    Country of Origin:
    United States
    MSRP $56.88
    Surplus $11.68
    Qty in Cart: 0
    Price:
    MSRP $56.88
    Surplus $11.68
  • Eaton CH150 Miniature Circuit Breakers (MCBs) 50A 120V EA Eaton CH150 Miniature Circuit Breakers (MCBs) 50A 120V EA

    Eaton CH150 Miniature Circuit Breakers (MCBs) 50A 120V EA

    MSRP $22.35
    Surplus $10.47
    Eaton CH150 Miniature Circuit Breakers (MCBs) 50A 120V EA​ ARCA SKU:  C15-1390 Brand:  Eaton MPN:  CH150 UPC:  78211310168 Shipping Weight:  0.30 lbs. Shipping Height:  1.00 In. Shipping...
    SKU:
    C15-1390
    Series:
    CH
    Type:
    Thermal Magnetic
    Approval:
    UL 489
    Approval:
    CSA
    Volts:
    120/240 VAC
    Amps:
    32 A
    Used On:
    CH Series Loadcenter
    Poles:
    1
    Mounting:
    Plug-On
    Interrupting Rating:
    10 kA
    Wire Size:
    14 to 2 AWG (Aluminum/Copper)
    Short Description:
    120/240 VAC, 50 A, 10 kA, 1-Pole, Plug-On Mount, Thermal Magnetic
    Catalog:
    Eaton_36620_V1T1_36_V1T1_37_CAT.pdf
    TS PIK:
    531261
    Voltage Rating:
    120/240 VAC
    Number of Poles:
    1
    Current Rating:
    50 A
    Country of Origin:
    United States
    MSRP $22.35
    Surplus $10.47
    Qty in Cart: 0
    Price:
    MSRP $22.35
    Surplus $10.47
  • Eaton BR150 Miniature Circuit Breakers (MCBs) 50A 120V EA Eaton BR150 Miniature Circuit Breakers (MCBs) 50A 120V EA

    Eaton BR150 Miniature Circuit Breakers (MCBs) 50A 120V EA

    MSRP $45.38
    Surplus $10.16
    Eaton BR150 Miniature Circuit Breakers (MCBs) 50A 120V EA​ ARCA SKU:  C15-1205 Brand:  Eaton MPN:  BR150 UPC:  78667636230 Shipping Weight:  0.30 lbs. Shipping Height:  1.00 In. Shipping...
    SKU:
    C15-1205
    Series:
    BR
    Type:
    Common Trip
    Volts:
    120/240 VAC
    Amps:
    32 A
    Used On:
    BR Series Load Center
    Poles:
    1
    Mounting:
    Plug-On
    Interrupting Rating:
    10 kA
    Wire Size:
    14 to 4 AWG (Copper/Aluminum)
    Short Description:
    120/240 VAC, 50 A, 10 kA, 1-Pole, Plug-On Mount, Common Trip
    Catalog:
    Eaton_36620_V1T1_84_CAT.pdf
    TS PIK:
    21493851
    Current Rating:
    50 A
    Voltage Rating:
    120/240 VAC
    Number of Poles:
    1
    Country of Origin:
    Dominican Republic
    MSRP $45.38
    Surplus $10.16
    Qty in Cart: 0
    Price:
    MSRP $45.38
    Surplus $10.16
  • GENERAL ELECTRIC TEY150 Miniature Circuit Breakers (MCBs) GENERAL ELECTRIC TEY150 Miniature Circuit Breakers (MCBs)

    GENERAL ELECTRIC TEY150 Miniature Circuit Breakers (MCBs)

    MSRP $165.00
    Surplus $81.00
    GENERAL ELECTRIC TEY150 Miniature Circuit Breakers (MCBs)​ ARCA SKU:  C15-3597 Brand:  GENERAL ELECTRIC MPN:  TEY150 UPC:  78316418214 Shipping Weight:  0.75 lbs. Shipping Height:  4.00 In...
    SKU:
    C15-3597
    Type:
    Thermal Magnetic
    Type:
    Compact
    Approval:
    UL
    Volts:
    120/240/277 VAC
    Amps:
    32 A
    Poles:
    1
    Interrupting Rating:
    14 kA at 120/240/277 VAC
    Interrupting Rating:
    65 kA at 120 Volt AC
    Terminal Type:
    Bolt-On
    Frame Type:
    TEY
    Maximum AC Voltage Rating:
    277 V
    Short Description:
    277 VAC, 50 A, 14 kA, 1-Pole, 14 to 2/0 AWG Copper/Aluminum, Load Lug Terminal, Bolt-On Mount, Thermal Magnetic, Non-Interchangeable
    Catalog:
    ABBElectrificationProducts-ABBGEIndustrialSolutions_01912_6_64_CAT.pdf
    Installation/Operator:
    ABBElectrificationProducts-ABBGEIndustrialSolutions_00118_INST.pdf
    CAD Drawing:
    ABBElectrificationProducts-ABBGEIndustrialSolutions_04184_1_CAD.pdf
    TS PIK:
    112129577
    Voltage Rating:
    120/240/277 VAC
    Current Rating:
    50 A
    Number of Poles:
    1
    CAD Drawings:
    ABBElectrificationProducts-ABBGEIndustrialSolutions_04184_1_CAD.pdf
    Mounting:
    Bolt-On
    Series:
    TEY
    Country of Origin:
    United States
    MSRP $165.00
    Surplus $81.00
    Qty in Cart: 0
    Price:
    MSRP $165.00
    Surplus $81.00
  • Eaton BAB1050 Miniature Circuit Breakers (MCBs) 1P 50A 120V EA Eaton BAB1050 Miniature Circuit Breakers (MCBs) 1P 50A 120V EA

    Eaton BAB1050 Miniature Circuit Breakers (MCBs) 1P 50A 120V EA

    MSRP $68.42
    Surplus $13.85
    Eaton BAB1050 Miniature Circuit Breakers (MCBs) 1P 50A 120V EA​ ARCA SKU:  C15-1029 Brand:  Eaton MPN:  BAB1050 UPC:  78667930150 Shipping Weight:  0.30 lbs. Shipping Height:  1.00 In...
    SKU:
    C15-1029
    Series:
    BAB
    Type:
    Thermal Magnetic
    Approval:
    UL 489
    Approval:
    CSA
    Volts:
    120/240 VAC
    Amps:
    32 A
    Poles:
    1
    Mounting:
    Bolt-On
    Interrupting Rating:
    10000 A at 120/240 VAC
    Interrupting Rating:
    5000 A at 24 to 48 VDC
    Interrupting Rating:
    3800 A at 62.5 VDC
    Terminal Type:
    Extended Tang Line Terminal
    Terminal Type:
    Box Lug Load Terminal
    Wire Size:
    14 to 4 AWG Aluminum/Copper (Load)
    Short Description:
    120/240 VAC, 50 A, 10 kA, 1-Pole, Extended Tang Line/Box Lug Load Terminal, Bolt-On Mount, Thermal Magnetic, Miniature
    Catalog:
    Eaton_03771_V4T1_11_V4T1_12_V4T1_46_CAT.pdf
    Voltage Rating:
    120/240 VAC
    Number of Poles:
    1
    Current Rating:
    50 A
    Country of Origin:
    Dominican Republic
    MSRP $68.42
    Surplus $13.85
    Qty in Cart: 0
    Price:
    MSRP $68.42
    Surplus $13.85
  • Eaton CHQ150 Miniature Circuit Breakers (MCBs) CH 1P 50A 240V 50/60Hz 1Ph EA Eaton CHQ150 Miniature Circuit Breakers (MCBs) CH 1P 50A 240V 50/60Hz 1Ph EA

    Eaton CHQ150 Miniature Circuit Breakers (MCBs) CH 1P 50A 240V 50/60Hz 1Ph EA

    MSRP $51.00
    Surplus $19.98
    Eaton CHQ150 Miniature Circuit Breakers (MCBs) CH 1P 50A 240V 50/60Hz 1Ph EA​ ARCA SKU:  C15-3547 Brand:  Eaton MPN:  CHQ150 UPC:  782113010885 Shipping Weight:  0.30 lbs. Shipping...
    SKU:
    C15-3547
    Series:
    CHQ
    Approval:
    UL
    Volts:
    120/240 VAC
    Amps:
    32 A
    Used On:
    QO Loadcenter
    Poles:
    1
    Interrupting Rating:
    10000 A
    Wire Size:
    (1) 14 to 8 AWG (Aluminum/Copper)
    Wire Size:
    (2) 14 to 10 AWG (Aluminum/Copper)
    Short Description:
    120/240 VAC, 50 A, 10 kA, 1-Pole, 3/4" Space, Thermal Magnetic, Renewal
    Catalog:
    Eaton_36601_V1T1_101_V1T1_102_CAT.pdf
    Installation/Operator:
    Eaton_00008_INST.pdf
    Manufacturer Warranty:
    Eaton_00009_WARR.pdf
    TS PIK:
    111008135
    Number of Poles:
    1
    Current Rating:
    50 A
    Voltage Rating:
    120/240 VAC
    Country of Origin:
    Dominican Republic
    MSRP $51.00
    Surplus $19.98
    Qty in Cart: 0
    Price:
    MSRP $51.00
    Surplus $19.98
  • Eaton QBH50 Miniature Circuit Breakers (MCBs)

    Eaton QBH50 Miniature Circuit Breakers (MCBs)

    MSRP $43.00
    Surplus $5.39
    SKU:  C15-11578 Brand:  Eaton MPN:  QBH50 UPC:  62258800742 Shipping Weight:  0.25 lbs. Shipping Height:  1.00 In. Shipping Length:  4.00 In. Shipping Width:  4.00 In...
    SKU:
    C15-11578
    TS PIK:
    115729814
    Short Description:
    120 VAC, 50 A, 1-Pole, 10 kA, Bolt-On Mount, Circuit Breaker
    Number of Poles:
    1
    Voltage Rating:
    120 VAC
    Interrupting Rating:
    10 kA at 120 VAC
    Catalog:
    Eaton_29290_63_CAT.pdf
    Wire Size:
    10 to 2 AWG (Copper), 10 to 1 AWG (Aluminum)
    Current Rating:
    50 A
    Used On:
    Loadcenter, Lighting and Distribution Panel Board, Meter Centre
    Series:
    QBH
    Mounting:
    Bolt-On
    Country of Origin:
    Dominican Republic
    MSRP $43.00
    Surplus $5.39
    Qty in Cart: 0
    Price:
    MSRP $43.00
    Surplus $5.39
  • Eaton QBHW1050 Miniature Circuit Breakers (MCBs) 1P 50A 240V EA Eaton QBHW1050 Miniature Circuit Breakers (MCBs) 1P 50A 240V EA

    Eaton QBHW1050 Miniature Circuit Breakers (MCBs) 1P 50A 240V EA

    MSRP $122.00
    Surplus $40.21
    Eaton QBHW1050 Miniature Circuit Breakers (MCBs) 1P 50A 240V EA​ ARCA SKU:  C15-3443 Brand:  Eaton MPN:  QBHW1050 UPC:  786679392300 Shipping Weight:  0.35 lbs. Shipping Height:  1.00 In...
    SKU:
    C15-3443
    Approval:
    UL 489
    Approval:
    CSA
    Amps:
    50 A
    Interrupting Rating:
    22000 A at 120/240 VAC
    Interrupting Rating:
    5000 Amp at 24 to 48 Volt DC
    Mounting:
    Bolt-On
    Poles:
    1
    Size:
    1.2 Inch Width x 3.6 Inch Depth x 3.2 Inch Height
    Terminal Type:
    Steel Box Lug Standard Load
    Type:
    Thermal Magnetic
    Type:
    Non-Interchangeable Trip
    Type:
    Miniature
    Volts:
    120/240 VAC
    Volts:
    24/48/62.5 VDC
    Gauge:
    14 to 4 AWG Copper/Aluminum (Standard Load)
    Short Description:
    120/240 VAC, 50 A, 22 kA Interrupt, 1-Pole, Extended Tang Line/Steel Box Lug Load Terminal, Bolt-On Mount, Thermal Magnetic, Type QBHW, Non-Interchangeable Industrial Circuit Breaker
    TS PIK:
    21510587
    Current Rating:
    50 A
    Wire Size:
    14 to 4 AWG Copper/Aluminum (Standard Load)
    Catalog:
    EatonCorp_00004_V4T1_11_V4T1_12_V4T1_46_CAT.pdf
    Voltage Rating:
    120/240 VAC
    Number of Poles:
    1
    Country of Origin:
    Dominican Republic
    MSRP $122.00
    Surplus $40.21
    Qty in Cart: 0
    Price:
    MSRP $122.00
    Surplus $40.21
  • Siemens BQ1B050 Miniature Circuit Breakers (MCBs) 50A 120V

    Siemens BQ1B050 Miniature Circuit Breakers (MCBs) 50A 120V

    MSRP $85.50
    Surplus $27.94
    Siemens BQ1B050 Miniature Circuit Breakers (MCBs) 50A 120V​ ARCA SKU:  C15-6129 Brand:  Siemens MPN:  BQ1B050 UPC:  78364310238 Shipping Weight:  0.35 lbs. Shipping Height:  3.00 In...
    SKU:
    C15-6129
    TS PIK:
    115270499
    Terminal Type:
    Load Lug
    Short Description:
    120/240 VAC, 50 A, 10 kA, 1-Pole, Load Lug Terminal, BQ Frame, Bolt-On, Molded Case Circuit Breaker
    Series:
    BQ
    Voltage Rating:
    120 VAC
    Catalog:
    SiemensAG_01698_17_1_17_7_CAT.pdf
    Current Rating:
    50 A
    Interrupting Rating:
    10 kA at 120 VAC Symmetrical (UL)
    Number of Poles:
    1
    Size:
    1 Inch W x 3 Inch D x 3-3/4 Inch H
    Data Sheet:
    SiemensAG_05359_1_DATA.pdf
    Wire Size:
    8 to 6 AWG (Copper), 8 to 4 AWG (Aluminum)
    Used On:
    P1/P2/P3/P4/P5 Panelboard
    Type:
    Molded Case, Thermal and Fixed Magnetic
    Country of Origin:
    Mexico
    Approval:
    UL
    MSRP $85.50
    Surplus $27.94
    Qty in Cart: 0
    Price:
    MSRP $85.50
    Surplus $27.94
  • Siemens BQD150 Miniature Circuit Breakers (MCBs) 1P 50A 277V

    Siemens BQD150 Miniature Circuit Breakers (MCBs) 1P 50A 277V

    MSRP $306.00
    Surplus $58.34
    Siemens BQD150 Miniature Circuit Breakers (MCBs) 1P 50A 277V​ ARCA SKU:  C15-6154 Brand:  Siemens MPN:  BQD150 UPC:  78364327715 Shipping Weight:  0.60 lbs. Shipping Height:  4.00 In...
    SKU:
    C15-6154
    TS PIK:
    21368629
    Installation/Operator:
    SiemensAG_00221_INST.pdf
    Voltage Rating:
    277 VAC at 50/60 Hz, 125 VDC (UL)
    Catalog:
    SiemensAG_00565_11_16_CAT.pdf
    Current Rating:
    50 A
    Data Sheet:
    SiemensAG_05418_1_DATA.pdf
    Short Description:
    277 VAC, 50 A, 14 kA, 1-Pole, Low-Tab Mount, Molded Case, Thermal Magnetic Trip Unit, Branch, Panelboard Circuit Breaker
    Interrupting Rating:
    14 kA at 277 VAC/125 VDC (UL)
    Series:
    BQD
    Used On:
    P1/P2/P3/P4/P5 Panelboard
    Number of Poles:
    1
    Type:
    Branch, Molded Case, Thermal and Fixed Magnetic
    Country of Origin:
    Mexico
    Installation:
    Bolt-On
    Approval:
    UL
    Application:
    Lighting, Distribution
    MSRP $306.00
    Surplus $58.34
    Qty in Cart: 0
    Price:
    MSRP $306.00
    Surplus $58.34
  • Square D QO150 Miniature Circuit Breakers (MCBs) 50A 120V

    Square D QO150 Miniature Circuit Breakers (MCBs) 50A 120V

    MSRP $29.10
    Surplus $11.77
    Square D QO150 Miniature Circuit Breakers (MCBs) 50A 120V​ ARCA SKU:  C15-4923 Brand:  Square D MPN:  QO150 UPC:  78590140022 Shipping Weight:  0.30 lbs. Shipping Height:  3.00 In...
    SKU:
    C15-4923
    TS PIK:
    21371522
    Size:
    0.75 Inch Width x 2.91 Inch Depth x 3.11 Inch Height
    Wire Size:
    8 to 2 AWG (Copper/Aluminum)
    Number of Poles:
    1
    Mounting:
    Plug-On
    Current Rating:
    50 A
    Voltage Rating:
    120/240 VAC
    Interrupting Rating:
    5/10 kA
    Catalog:
    SchneiderElectric-SquareD_32357_1_2_1_3_CAT.pdf
    Installation/Operator:
    SchneiderElectric-SquareD_01259_INST.pdf
    Used On:
    QO Load Center, NQ/NQOD Panelboard/OEM Interior/Speed-D Switchboard Distribution Panel
    Type:
    Common Trip, Miniature, Standard
    Data Sheet:
    SchneiderElectric-SquareD_53432_1_2_DATA.pdf
    Terminal Type:
    Box Lug
    Short Description:
    120/240 VAC 50/60 Hz, 48 VDC, 50 A, 5/10 kA Interrupt, 1-Pole, 8 to 2 AWG Copper/Aluminum, Plug-In Mount, Box Lug Terminal, Standard, Miniature Circuit Breaker
    Series:
    QO
    Country of Origin:
    Ireland
    Approval:
    UL, CSA
    MSRP $29.10
    Surplus $11.77
    Qty in Cart: 0
    Price:
    MSRP $29.10
    Surplus $11.77
  • Square D QOU150 Miniature Circuit Breakers (MCBs)

    Square D QOU150 Miniature Circuit Breakers (MCBs)

    MSRP $40.20
    Surplus $24.21
    Square D QOU150 Miniature Circuit Breakers (MCBs)​ ARCA SKU:  C15-6564 Brand:  Square D MPN:  QOU150 UPC:  78590141862 Shipping Weight:  0.35 lbs. Shipping Height:  1.00 In. Shipping...
    SKU:
    C15-6564
    TS PIK:
    109594956
    Short Description:
    120/240 VAC 50/60 Hz, 48 VDC, 50 A, 10 kA Interrupt, 1-Pole, 14 to 2 AWG Copper/Aluminum, Unit Mount, Slotted Box Lug Line/Load Terminal, Standard, Miniature Circuit Breaker
    Number of Poles:
    1
    Voltage Rating:
    120/240 VAC
    Series:
    QOU
    Installation/Operator:
    SchneiderElectric-SquareD_02171_INST.pdf
    Catalog:
    SchneiderElectric-SquareD_32357_7_19_7_21_CAT.pdf
    Terminal Type:
    Slotted Box Lug Line/Load
    Current Rating:
    50 A
    Mounting:
    DIN Rail
    Wire Size:
    14 to 2 AWG (Copper/Aluminum)
    Type:
    Miniature, Standard
    Interrupting Rating:
    10 kA
    Size:
    0.75 Inch Width x 2.95 Inch Depth x 4.05 Inch Height
    CAD Drawings:
    SchneiderElectric_30265_1_CAD.pdf
    Used On:
    OEM
    Data Sheet:
    SchneiderElectric_21503_1_2_DATA.pdf
    Country of Origin:
    Mexico
    Approval:
    UL, CSA
    MSRP $40.20
    Surplus $24.21
    Qty in Cart: 0
    Price:
    MSRP $40.20
    Surplus $24.21

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.