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.

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  • Eaton QBHW3045H Molded Case Breakers (MCCBs) 3P 45A 240V EA Eaton QBHW3045H Molded Case Breakers (MCCBs) 3P 45A 240V EA

    Eaton QBHW3045H Molded Case Breakers (MCCBs) 3P 45A 240V EA

    MSRP $999.09
    Surplus $187.74
    SKU:  C15-4091 Brand:  Eaton MPN:  QBHW3045H UPC:  78667939342 Shipping Weight:  1.10 lbs. Shipping Height:  3.00 In. Shipping Length:  4.00 In. Shipping Width:  4.00 In...
    SKU:
    C15-4091
    Series:
    QBHW
    Type:
    Thermal Magnetic
    Approval:
    UL 489
    Approval:
    CSA
    Volts:
    240 VAC
    Amps:
    32 A
    Poles:
    3
    Mounting:
    Bolt-On
    Interrupting Rating:
    22000 A at 240 VAC
    Terminal Type:
    Extended Tang Line Terminal
    Terminal Type:
    Box Lug Load Terminal
    Wire Size:
    14 to 4 AWG Aluminum/Copper (Load)
    Short Description:
    240 VAC, 45 A, 22 kA, 3-Pole, Extended Tang Line/Steel Box Lug Load Terminal, Bolt-On Mount, Thermal Magnetic, Miniature
    Catalog:
    Eaton_03771_V4T1_12_CAT.pdf
    TS PIK:
    107002728
    Voltage Rating:
    240 VAC
    Current Rating:
    45 A
    Number of Poles:
    3
    Country of Origin:
    United States
    MSRP $999.09
    Surplus $187.74
    Qty in Cart: 0
    Price:
    MSRP $999.09
    Surplus $187.74
  • Square D QO345 Miniature Circuit Breakers (MCBs)

    Square D QO345 Miniature Circuit Breakers (MCBs)

    MSRP $337.60
    Surplus $119.45
    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 $337.60
    Surplus $119.45
    Qty in Cart: 0
    Price:
    MSRP $337.60
    Surplus $119.45
  • Siemens BQD345 Miniature Circuit Breakers (MCBs) 3P 45A 277V Siemens BQD345 Miniature Circuit Breakers (MCBs) 3P 45A 277V

    Siemens BQD345 Miniature Circuit Breakers (MCBs) 3P 45A 277V

    MSRP $1,636.28
    Surplus $459.87
    Siemens BQD345 Miniature Circuit Breakers (MCBs) 3P 45A 277V​ ARCA SKU:  C15-3566 Brand:  Siemens MPN:  BQD345 UPC:  78364327740 Shipping Weight:  1.70 lbs. Shipping Height:  3.00 In...
    SKU:
    C15-3566
    Series:
    BQD
    Type:
    Branch
    Type:
    Molded Case
    Type:
    Thermal and Fixed Magnetic
    Approval:
    UL
    Volts:
    480 Star/277 VAC at 50/60 Hz (UL)
    Amps:
    32 A
    Used On:
    P1/P2/P3/P4/P5 Panelboard
    Poles:
    3
    Interrupting Rating:
    14 kA at 480 Star/277 VAC (UL)
    Application:
    Lighting
    Application:
    Distribution
    Installation:
    Bolt-On
    Short Description:
    480 VAC Star/277 VAC, 45 A, 14 kA, 3-Pole, Low-Tab Mount, Molded Case, Thermal Magnetic Trip Unit, Branch
    Catalog:
    SiemensAG_00565_11_16_CAT.pdf
    Data Sheet:
    SiemensAG_05440_1_DATA.pdf
    Installation/Operator:
    SiemensAG_00221_INST.pdf
    TS PIK:
    21368658
    Number of Poles:
    3
    Current Rating:
    45 A
    Voltage Rating:
    480 Star/277 VAC at 50/60 Hz (UL)
    Country of Origin:
    Mexico
    MSRP $1,636.28
    Surplus $459.87
    Qty in Cart: 0
    Price:
    MSRP $1,636.28
    Surplus $459.87
  • Eaton BAB3045H Miniature Circuit Breakers (MCBs) BA 3P 45A 120/240V 50/60Hz 3Ph EA Eaton BAB3045H Miniature Circuit Breakers (MCBs) BA 3P 45A 120/240V 50/60Hz 3Ph EA

    Eaton BAB3045H Miniature Circuit Breakers (MCBs) BA 3P 45A 120/240V 50/60Hz 3Ph EA

    MSRP $551.33
    Surplus $117.33
    SKU:  C15-1097 Brand:  Eaton MPN:  BAB3045H UPC:  786679303450 Shipping Weight:  0.95 lbs. Shipping Height:  3.00 In. Shipping Length:  4.00 In. Shipping Width:  4.00 In...
    SKU:
    C15-1097
    TS PIK:
    21508711
    Series:
    BAB
    Short Description:
    240 VAC, 45 A, 10 kA, 3-Pole, Extended Tang Line/Box Lug Load Terminal, Bolt-On Mount, Thermal Magnetic, Miniature, Circuit Breaker
    Type:
    Thermal Magnetic
    Voltage Rating:
    240 VAC
    Mounting:
    Bolt-On
    Catalog:
    Eaton_03771_V4T1_3_V4T1_11_V4T1_12_CAT.pdf
    Terminal Type:
    Extended Tang Line Terminal, Box Lug Load Terminal
    Wire Size:
    14 to 4 AWG Aluminum/Copper (Load)
    Interrupting Rating:
    10000 A at 240 VAC
    Number of Poles:
    3
    Current Rating:
    45 A
    Country of Origin:
    Dominican Republic
    Approval:
    UL 489, CSA
    MSRP $551.33
    Surplus $117.33
    Qty in Cart: 0
    Price:
    MSRP $551.33
    Surplus $117.33
  • Eaton BR345 Miniature Circuit Breakers (MCBs) 3P 45A 120V EA Eaton BR345 Miniature Circuit Breakers (MCBs) 3P 45A 120V EA

    Eaton BR345 Miniature Circuit Breakers (MCBs) 3P 45A 120V EA

    MSRP $517.29
    Surplus $111.49
    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 $517.29
    Surplus $111.49
    Qty in Cart: 0
    Price:
    MSRP $517.29
    Surplus $111.49
  • Siemens B345 Miniature Circuit Breakers (MCBs) B 3P 45A 240V 50/60Hz 3Ph Siemens B345 Miniature Circuit Breakers (MCBs) B 3P 45A 240V 50/60Hz 3Ph

    Siemens B345 Miniature Circuit Breakers (MCBs) B 3P 45A 240V 50/60Hz 3Ph

    MSRP $707.88
    Surplus $86.42
    Siemens B345 Miniature Circuit Breakers (MCBs) B 3P 45A 240V 50/60Hz 3Ph​ ARCA SKU:  C15-2568 Brand:  Siemens MPN:  B345 UPC:  783643263741 Shipping Weight:  0.95 lbs. Shipping Height:  3...
    SKU:
    C15-2568
    Type:
    Electronic
    Type:
    Thermal
    Approval:
    UL 489
    Approval:
    CSA C22.2
    Volts:
    240 VAC at 50/60 Hertz (UL)
    Amps:
    32 A
    Used On:
    P1/P2/P3/P4/P5 Panelboard
    Poles:
    3
    Interrupting Rating:
    10 kA at 240 VAC (UL)
    Enclosure:
    IP20
    Application:
    Lighting
    Application:
    Distribution
    Installation:
    Bolt-On
    Short Description:
    240 VAC, 45 A, 10 kA, 3-Pole, Bolt-On Mount, Molded Case, Common Trip, Thermal Magnetic Trip Unit, Branch
    Catalog:
    SiemensAG_00564_7_29_CAT.pdf
    Data Sheet:
    Eaton_41036_1-6_DATA.pdf
    Number of Poles:
    3
    Installation/Operator:
    SiemensAG_00215_INST.pdf
    Voltage Rating:
    240 VAC
    Current Rating:
    45 A
    Mounting:
    Bolt-On
    Series:
    B
    Country of Origin:
    Mexico
    MSRP $707.88
    Surplus $86.42
    Qty in Cart: 0
    Price:
    MSRP $707.88
    Surplus $86.42
  • Siemens B345HH Miniature Circuit Breakers (MCBs) Siemens B345HH Miniature Circuit Breakers (MCBs)

    Siemens B345HH Miniature Circuit Breakers (MCBs)

    MSRP $1,964.36
    Surplus $265.45
    SKU:  C15-7398 Brand:  Siemens MPN:  B345HH UPC:  78364330636 Shipping Weight:  0.95 lbs. Shipping Height:  3.00 In. Shipping Length:  4.00 In. Shipping Width:  3.00 In...
    SKU:
    C15-7398
    TS PIK:
    106248797
    Short Description:
    240 VAC, 45 A, 65 kA, 3-Pole, Bolt-On Mount, Molded Case, Common Trip, Thermal Magnetic Trip Unit, Panelboard Circuit Breaker
    Number of Poles:
    3
    Catalog:
    SiemensAG_00564_7_29_CAT.pdf
    Type:
    Branch
    Installation/Operator:
    SiemensAG_00215_INST.pdf
    Data Sheet:
    SiemensAG_05263_1_DATA.pdf
    Voltage Rating:
    240 VAC at 50/60 Hz
    Interrupting Rating:
    65 kA
    Used On:
    P1/P2/P3/P4/P5 Series Panelboard
    Current Rating:
    45 A
    Mounting:
    Bolt-On
    Country of Origin:
    Mexico
    Approval:
    UL 489, CSA C22.2
    Application:
    Lighting/Distribution
    Installation:
    Bolt-On
    MSRP $1,964.36
    Surplus $265.45
    Qty in Cart: 0
    Price:
    MSRP $1,964.36
    Surplus $265.45
  • Siemens BQ3B045 Miniature Circuit Breakers (MCBs) 3P 45A 240V EA

    Siemens BQ3B045 Miniature Circuit Breakers (MCBs) 3P 45A 240V EA

    MSRP $835.84
    Surplus $84.97
    Siemens BQ3B045 Miniature Circuit Breakers (MCBs) 3P 45A 240V EA​ ARCA SKU:  C15-6256 Brand:  Siemens MPN:  BQ3B045 UPC:   Shipping Weight:  1.00 lbs. Shipping Height:  3.00 In. Shipping...
    SKU:
    C15-6256
    TS PIK:
    124364579
    Short Description:
    240 VAC, 45 A, 10 kA, 3-Pole, Load Lug Terminal, BQ Frame, Bolt-On, Common Trip, Molded Case Circuit Breaker
    Series:
    BQ
    Terminal Type:
    Load Lug
    Number of Poles:
    3
    Current Rating:
    45 A
    Interrupting Rating:
    10 kA at 240 VAC Symmetrical (UL)
    Size:
    3 Inch W x 3 Inch D x 3-3/4 Inch H
    Data Sheet:
    SiemensAG_05396_1_DATA.pdf
    Catalog:
    SiemensAG_01698_17_1_17_7_CAT.pdf
    Wire Size:
    8 to 6 AWG (Copper), 8 to 4 AWG (Aluminum)
    Voltage Rating:
    240 VAC at 50/60 Hz (UL)
    Type:
    Molded Case, Thermal and Fixed Magnetic, Common Trip
    Used On:
    P1/P2/P3/P4/P5 Panelboard
    Mounting:
    Bolt-On
    Country of Origin:
    Mexico
    Approval:
    UL
    MSRP $835.84
    Surplus $84.97
    Qty in Cart: 0
    Price:
    MSRP $835.84
    Surplus $84.97
  • Square D EDB34045 Miniature Circuit Breakers (MCBs)

    Square D EDB34045 Miniature Circuit Breakers (MCBs)

    MSRP $910.71
    Surplus $410.51
    SKU:  C15-10686 Brand:  Square D MPN:  EDB34045 UPC:  78590130723 Shipping Weight:  0.00 lbs. Shipping Height:  0.00 In. Shipping Length:  0.00 In. Shipping Width:  0.00 In...
    SKU:
    C15-10686
    TS PIK:
    115542998
    Short Description:
    480 Star/277 VAC, 45 A, 18 kA, 3-Pole, E-Frame, Bolt-On Mount, Aluminum Lug Terminal, Thermal Magnetic, Branch, Miniature, Panelboard Circuit Breaker
    Data Sheet:
    SchneiderElectric-SquareD_45616_1_2_DATA.pdf
    Interrupting Rating:
    18 kA at 480 Star/277 VAC
    Catalog:
    SchneiderElectric-SquareD_32357_9_31-9_33_CAT.pdf
    Current Rating:
    45 A
    Number of Poles:
    3
    Type:
    Thermal Magnetic, Branch, Miniature
    Voltage Rating:
    480 Star/277 VAC
    Series:
    EDB
    Installation/Operator:
    SchneiderElectric-SquareD_01117_INST.pdf
    Used On:
    NF Merchandised Panelboard
    Approval:
    UL (Canada and US)
    Trip Setting:
    630 A (Hold), 1800 A (Trip)
    Application:
    Lighting
    Installation:
    Bolt-On
    Country of Origin:
    Mexico
    MSRP $910.71
    Surplus $410.51
    Qty in Cart: 0
    Price:
    MSRP $910.71
    Surplus $410.51
  • Square D EGB34045 Miniature Circuit Breakers (MCBs)

    Square D EGB34045 Miniature Circuit Breakers (MCBs)

    MSRP $829.03
    Surplus $373.50
    SKU:  C15-7758 Brand:  Square D MPN:  EGB34045 UPC:   Shipping Weight:  0.00 lbs. Shipping Height:  0.00 In. Shipping Length:  0.00 In. Shipping Width:  0.00 In. Product...
    SKU:
    C15-7758
    TS PIK:
    21333992
    Voltage Rating:
    480 Star/277 VAC
    Interrupting Rating:
    35 kA at 480 Star/277 VAC
    Short Description:
    480 Star/277 VAC, 45 A, 35 kA, 3-Pole, E-Frame, Bolt-On Mount, Aluminum Lug Terminal, Thermal Magnetic, Branch, Miniature, Panelboard Circuit Breaker
    Used On:
    NF Merchandised Panelboard
    Type:
    Thermal Magnetic, Branch, Miniature
    Series:
    EGB
    Number of Poles:
    3
    Current Rating:
    45 A
    Data Sheet:
    SchneiderElectric-SquareD_45681_1_2_DATA.pdf
    Catalog:
    SchneiderElectric-SquareD_32357_9_31-9_33_CAT.pdf
    Installation/Operator:
    SchneiderElectric-SquareD_01117_INST.pdf
    Approval:
    UL (Canada and US)
    Trip Setting:
    630 A (Hold), 1800 A (Trip)
    Installation:
    Bolt-On
    Application:
    Lighting
    Country of Origin:
    Mexico
    MSRP $829.03
    Surplus $373.50
    Qty in Cart: 0
    Price:
    MSRP $829.03
    Surplus $373.50
  • Square D EJB34045 Miniature Circuit Breakers (MCBs)

    Square D EJB34045 Miniature Circuit Breakers (MCBs)

    MSRP $1,848.65
    Surplus $841.23
    SKU:  C15-10704 Brand:  Square D MPN:  EJB34045 UPC:  78590113062 Shipping Weight:  0.00 lbs. Shipping Height:  0.00 In. Shipping Length:  0.00 In. Shipping Width:  0.00 In...
    SKU:
    C15-10704
    TS PIK:
    116558698
    Type:
    Thermal Magnetic, Branch, Miniature
    Voltage Rating:
    480 Star/277 VAC
    Short Description:
    480 Star/277 VAC, 45 A, 65 kA, 3-Pole, E-Frame, Bolt-On Mount, Aluminum Lug Terminal, Thermal Magnetic, Branch, Miniature, Panelboard Circuit Breaker
    Used On:
    NF Merchandised Panelboard
    Installation/Operator:
    SchneiderElectric-SquareD_01117_INST.pdf
    Series:
    EJB
    Interrupting Rating:
    65 kA at 480 Star/277 VAC
    Data Sheet:
    SchneiderElectric-SquareD_45734_1_2_DATA.pdf
    Catalog:
    SchneiderElectric-SquareD_32357_9_31-9_33_CAT.pdf
    Current Rating:
    45 A
    Number of Poles:
    3
    Trip Setting:
    630 A (Hold), 1800 A (Trip)
    Installation:
    Bolt-On
    Application:
    Lighting
    Approval:
    UL (Canada and US)
    Country of Origin:
    Mexico
    MSRP $1,848.65
    Surplus $841.23
    Qty in Cart: 0
    Price:
    MSRP $1,848.65
    Surplus $841.23

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