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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Square D QO340 Miniature Circuit Breakers (MCBs) 3P 40A 240V
MSRP $371.63Surplus $81.47Square 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 $371.63Surplus $81.47 -
Square D QO340VH Miniature Circuit Breakers (MCBs)
MSRP $505.04Surplus $303.23SKU: 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
MSRP $505.04Surplus $303.23 -
Square D QOB240 Miniature Circuit Breakers (MCBs) 2P 40A 120V
MSRP $124.61Surplus $42.25Square 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
MSRP $124.61Surplus $42.25 -
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Square D QOB2401021 Miniature Circuit Breakers (MCBs)
MSRP $378.44Surplus $343.93SKU: C15-6657 Brand: Square D MPN: QOB2401021 UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In. Product...- SKU:
- C15-6657
- Series:
- QOB
- Installation/Operator:
- SchneiderElectric_00595_INST.pdf
- Interrupting Rating:
- 10 kA at 120/240 VAC, 5 kA at 48 VDC
- Used On:
- NQ Panelboard
- Current Rating:
- 40 A
- Type:
- Miniature, Standard
- Number of Poles:
- 2
- Data Sheet:
- SchneiderElectric_11100_1_2_DATA.pdf
- 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 with 120/208/240 VAC Shunt Trip Package
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Catalog:
- SchneiderElectric-Telemecanique_00033_1_15_9_20_CAT.pdf
- TS PIK:
- 21355195
MSRP $378.44Surplus $343.93 -
Square D QOB240EPD Miniature Circuit Breakers (MCBs)
MSRP $977.25Surplus $330.89Square 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
MSRP $977.25Surplus $330.89 -
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Square D QOB240VH Miniature Circuit Breakers (MCBs) QOB 2P 40A 120V 50/60Hz 1Ph
MSRP $232.78Surplus $166.57Square D QOB240VH Miniature Circuit Breakers (MCBs) QOB 2P 40A 120V 50/60Hz 1Ph​ ARCA SKU: C15-2179 Brand: Square D MPN: QOB240VH UPC: 785901054764 Shipping Weight: 38.00 Shipping...- SKU:
- C15-2179
- Series:
- QOB-VH
- Type:
- Miniature
- Type:
- Standard
- Approval:
- UL
- Approval:
- CSA
- Volts:
- 240 VAC 50/60 Hertz
- Amps:
- 32 A
- Used On:
- NQ Panelboard
- Poles:
- 2
- Interrupting Rating:
- 22 kA at 240 VAC
- Installation:
- Bolt-On
- Short Description:
- 240 VAC 50/60 Hz, 40 A, 22 kA, 2-Pole, Q-Frame, Bolt-On Mount, Box Lug Terminal, Miniature, Standard
- Catalog:
- SchneiderElectric-SquareD_32357_9_16_CAT.pdf
- Data Sheet:
- SchneiderElectric_21314_1_2_DATA.pdf
- Installation/Operator:
- SchneiderElectric-SquareD_02166_INST.pdf
- Manufacturer Warranty:
- SchneiderElectric-SquareD_00002_WARR.pdf
- Current Rating:
- 40 A
- Voltage Rating:
- 240 VAC 50/60 Hertz
- Number of Poles:
- 2
MSRP $232.78Surplus $166.57 -
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Square D QOU140 Miniature Circuit Breakers (MCBs) QOU 1P 40A 240V 50/60Hz 1Ph
MSRP $68.07Surplus $32.96Square D QOU140 Miniature Circuit Breakers (MCBs) QOU 1P 40A 240V 50/60Hz 1Ph​ ARCA SKU: C15-3658 Brand: Square D MPN: QOU140 UPC: 785901418597 Shipping Weight: 0.40 Shipping Height: 1.00...- SKU:
- C15-3658
- Series:
- QOU
- Type:
- Miniature
- Type:
- Standard
- Approval:
- UL
- Approval:
- CSA
- Size:
- 0.75 Inch Width x 2.95 Inch Depth x 4.05 Inch Height
- Volts:
- 120/240 VAC 50/60 Hertz
- Volts:
- 48 VDC
- Amps:
- 32 A
- Used On:
- OEM
- Poles:
- 1
- Mounting:
- DIN Rail
- Interrupting Rating:
- 10 kA
- Terminal Type:
- Slotted Box Lug Line/Load
- Wire Size:
- 14 to 2 AWG (Copper/Aluminum)
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 40 A, 10 kA Interrupt, 1-Pole, 14 to 2 AWG Copper/Aluminum, Unit Mount, Slotted Box Lug Line/Load Terminal, Standard
- Catalog:
- SchneiderElectric-SquareD_32357_7_19_7_21_CAT.pdf
- Data Sheet:
- SchneiderElectric_21490_1_2_DATA.pdf
- Installation/Operator:
- SchneiderElectric-SquareD_02171_INST.pdf
- CAD Drawing:
- SchneiderElectric_30265_1_CAD.pdf
- Manufacturer Warranty:
- SchneiderElectric-SquareD_00002_WARR.pdf
- CAD Drawings:
- SchneiderElectric_30265_1_CAD.pdf
- Number of Poles:
- 1
- Current Rating:
- 40 A
- Voltage Rating:
- 120/240 VAC
- Country of Origin:
- Mexico
MSRP $68.07Surplus $32.96 -
Square D QOU240 Miniature Circuit Breakers (MCBs)
MSRP $126.60Surplus $58.03SKU: C15-10927 Brand: Square D MPN: QOU240 UPC: 78590141874 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10927
- TS PIK:
- 111088448
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 40 A, 10 kA Interrupt, 2-Pole, 14 to 2 AWG Copper/Aluminum, Unit Mount, Slotted Box Lug Line/Load Terminal, Standard, Miniature Circuit Breaker
- Terminal Type:
- Slotted Box Lug Line/Load
- Interrupting Rating:
- 10 kA
- Series:
- QOU
- Type:
- Miniature, Standard
- Mounting:
- DIN Rail/Unit/Surface/Flush
- Catalog:
- SchneiderElectric-SquareD_32357_7_19_7_21_CAT.pdf
- Number of Poles:
- 2
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Data Sheet:
- SchneiderElectric_21584_1_2_DATA.pdf
- CAD Drawings:
- SchneiderElectric_30265_1_CAD.pdf
- Wire Size:
- 14 to 2 AWG (Copper/Aluminum)
- Installation/Operator:
- SchneiderElectric-SquareD_02171_INST.pdf
- Current Rating:
- 40 A
- Used On:
- OEM
- Size:
- 1.5 Inch Width x 2.95 Inch Depth x 4.05 Inch Height
MSRP $126.60Surplus $58.03 -
Square D QOU340 Miniature Circuit Breakers (MCBs)
MSRP $419.28Surplus $195.70SKU: C15-10934 Brand: Square D MPN: QOU340 UPC: 78590141895 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10934
- TS PIK:
- 111088455
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 40 A, 10 kA Interrupt, 3-Pole, 14 to 2 AWG Copper/Aluminum, Unit Mount, Slotted Box Lug Line/Load Terminal, Standard, Miniature Circuit Breaker
- Series:
- QOU
- Current Rating:
- 40 A
- Interrupting Rating:
- 10 kA
- Mounting:
- DIN Rail/Unit/Surface/Flush
- Terminal Type:
- Slotted Box Lug Line/Load
- Type:
- Miniature, Standard
- Size:
- 2.25 Inch Width x 2.95 Inch Depth x 4.05 Inch Height
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- CAD Drawings:
- SchneiderElectric_30265_1_CAD.pdf
- Used On:
- OEM
- Wire Size:
- 14 to 2 AWG (Copper/Aluminum)
- Catalog:
- SchneiderElectric-SquareD_32357_7_19_7_21_CAT.pdf
- Data Sheet:
- SchneiderElectric_21678_1_2_DATA.pdf
- Installation/Operator:
- SchneiderElectric-SquareD_02171_INST.pdf
- Number of Poles:
- 3
MSRP $419.28Surplus $195.70 -
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TEY140 Miniature Circuit Breakers (MCBs) 1P 40A 277VAC
MSRP $200.15Surplus $152.08TEY140 Miniature Circuit Breakers (MCBs) 1P 40A 277VAC​ ARCA SKU: C15-4761 Brand: MPN: TEY140 UPC: 783164182132 Shipping Weight: 0.80 lbs. Shipping Height: 2.00 In. Shipping...- SKU:
- C15-4761
- 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 V AC
- Interrupting Rating:
- 65 kA at 120 Volt AC
- Terminal Type:
- Bolt-On
- Frame Type:
- TEY
- Maximum AC Voltage Rating:
- 277 Volt
- Short Description:
- 480 VAC Star/277 VAC, 40 A, 65 kA Interrupt, 1-Pole, 10 to 4 AWG Aluminum/Copper Integral Load Lug Terminal, 1" Bolt-On Mount, Non-Interchangeable Trip, Compact, Thermal Magnetic
- Catalog:
- ABBElectrificationProducts-ABBGEIndustrialSolutions_00542_6_9_6_64_CAT.pdf
- Installation/Operator:
- ABBElectrificationProducts-ABBGEIndustrialSolutions_00022_INST.pdf
- CAD Drawing:
- ABBElectrificationProducts-ABBGEIndustrialSolutions_01762_1_CAD.pdf
- Voltage Rating:
- 120/240/277 V AC
- Current Rating:
- 40 A
- CAD Drawings:
- ABBElectrificationProducts-ABBGEIndustrialSolutions_01762_1_CAD.pdf
- Number of Poles:
- 1
MSRP $200.15Surplus $152.08 -
THQB2140 Miniature Circuit Breakers (MCBs) THQB 2P 40A 120/240V
MSRP $172.54Surplus $61.11THQB2140 Miniature Circuit Breakers (MCBs) THQB 2P 40A 120/240V​ ARCA SKU: C15-4046 Brand: MPN: THQB2140 UPC: 783164012262 Shipping Weight: 0.65 Shipping Height: 2.00 In. Shipping...- SKU:
- C15-4046
- Amps:
- 40 A
- Terminal Type:
- Bolt-On
- Type:
- Thermal Magnetic
- Type:
- Compact
- Short Description:
- 120/240 VAC, 40 A, 10 kA, 2-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
- Country of Origin:
- United States
MSRP $172.54Surplus $61.11 -
Contact Us For Quote
THQB22040 Miniature Circuit Breakers (MCBs) THQB 2P 40A 240V
MSRP $270.90Surplus $184.67THQB22040 Miniature Circuit Breakers (MCBs) THQB 2P 40A 240V​ ARCA SKU: C15-3782 Brand: MPN: THQB22040 UPC: 783164012330 Shipping Weight: 0.65 lbs. Shipping Height: 2.00 In...- SKU:
- C15-3782
- Amps:
- 40 A
- Terminal Type:
- Bolt-On
- Type:
- Thermal Magnetic
- Type:
- Compact
- Short Description:
- 240 VAC, 40 A, 10 kA Interrupt, 2-Pole, 8 to 3 AWG Aluminum/Copper Load Lug Terminal, 1" Bolt-On Mount, Q-Line Frame, Non-Interchangeable/Internal Common Trip, Compact, Fixed Thermal Magnetic, Miniature Molded Case Circuit Breaker
- Current Rating:
- 40 A
- Catalog:
- ABBElectrificationProducts-ABBGEIndustrialSolutions_00542_6_4_6_5_6_8_6_35_CAT.pdf
- CAD Drawings:
- ABBElectrificationProducts-ABBGEIndustrialSolutions_01786_1_CAD.pdf
- Installation/Operator:
- ABBElectrificationProducts-ABBGEIndustrialSolutions_00024_INST.pdf
MSRP $270.90Surplus $184.67 -
THQB32040 Miniature Circuit Breakers (MCBs) THQB 3P 40A 240V
MSRP $535.33Surplus $188.17THQB32040 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 $535.33Surplus $188.17 -
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THQL1140 Miniature Circuit Breakers (MCBs) THQL 1P 40A 240V
MSRP $73.27Surplus $14.85THQL1140 Miniature Circuit Breakers (MCBs) THQL 1P 40A 240V​ ARCA SKU: C15-3820 Brand: MPN: THQL1140 UPC: 783164012880 Shipping Weight: 0.30 Shipping Height: 1.00 In. Shipping...- SKU:
- C15-3820
- Type:
- Thermal Magnetic
- Type:
- Compact
- Approval:
- UL
- Volts:
- 120/240 VAC
- Amps:
- 32 A
- Poles:
- 1
- Interrupting Rating:
- 10 kA at 120/240 VAC
- Terminal Type:
- Plug-On
- Frame Type:
- Q-Line
- Maximum AC Voltage Rating:
- 240 V
- Short Description:
- 120/240 VAC, 40 A, 10 kA Interrupt, 1-Pole, (1) 8 to 3 AWG Aluminum/Copper Load Lug Terminal, 1" Plug-In Mount, Q-Line Frame, Non-Interchangeable Trip, Compact, Fixed Thermal Magnetic
- Catalog:
- ABBElectrificationProducts-ABBGEIndustrialSolutions_00542_1_7_CAT.pdf
- CAD Drawing:
- ABBElectrificationProducts-ABBGEIndustrialSolutions_01789_1_CAD.pdf
- Voltage Rating:
- 120/240 VAC
- Current Rating:
- 40 A
- Number of Poles:
- 1
- CAD Drawings:
- ABBElectrificationProducts-ABBGEIndustrialSolutions_01789_1_CAD.pdf
MSRP $73.27Surplus $14.85 -
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THQL2140ST1 Miniature Circuit Breakers (MCBs) THQL 2P 40A 120V
MSRP $564.94Surplus $260.72SKU: C15-2981 Brand: MPN: THQL2140ST1 UPC: 783164419085 Shipping Weight: 1.05 lbs. Shipping Height: 3.00 In. Shipping Length: 3.50 In. Shipping Width: 3.00 In...- SKU:
- C15-2981
- Volts:
- 120/240 V
- Amps:
- 32 A
- Poles:
- 2
- Interrupting Rating:
- 10 kA
- Short Description:
- 120/240 VAC, 40 A, 10 kA Interrupt, 2-Pole, 8 to 3 AWG Aluminum/Copper Load Lug Terminal, 1" Plug-In Mount, Q-Line Frame, Internal Common Trip, Compact, Fixed Thermal Magnetic
- Catalog:
- ABBElectrificationProducts-ABBGEIndustrialSolutions_00542_1_10_CAT.pdf
- Current Rating:
- 40 A
- Number of Poles:
- 2
- Voltage Rating:
- 120/240 V
MSRP $564.94Surplus $260.72
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