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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Din Rail Mounted Circuit Breakers
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Main Breakers
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Miniature Circuit Breakers (MCBs)
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Molded Case Breakers (MCCBs)
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Motor Circuit Protector (MCPs)
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Lug Terminal Kits
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Auxiliary, Shunt, Trip Units and UVRs
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Circuit Breaker Accessories
- Product
- Qty in Cart
- Price
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Square D QO220 Miniature Circuit Breakers (MCBs) 2P 20A 120V EA
MSRP $91.21Surplus $29.73Square D QO220 Miniature Circuit Breakers (MCBs) 2P 20A 120V EA​ ARCA SKU: C15-6675 Brand: Square D MPN: QO220 UPC: 78590140036 Shipping Weight: 0.55 lbs. Shipping Height: 3.25 In...- SKU:
- C15-6675
- TS PIK:
- 21356241
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 20 A, 5/10 kA Interrupt, 2-Pole, 14 to 8 AWG Copper/Aluminum, Plug-In Mount, Pressure Plate Terminal, Standard, Miniature Circuit Breaker
- Series:
- QO
- Type:
- Common Trip, Miniature, Standard
- Mounting:
- Plug-On
- Number of Poles:
- 2
- Interrupting Rating:
- 5/10 kA
- Wire Size:
- 14 to 8 AWG (Copper/Aluminum)
- Catalog:
- SchneiderElectric-SquareD_32357_1_2_1_3_CAT.pdf
- Data Sheet:
- SchneiderElectric-SquareD_53493_1_2_DATA.pdf
- Size:
- 1.5 Inch Width x 2.91 Inch Depth x 2.99 Inch Height
- Current Rating:
- 20 A
- Terminal Type:
- Pressure Plate
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Installation/Operator:
- SchneiderElectric-SquareD_01265_INST.pdf
- Used On:
- QO Load Center, NQ/NQOD Panelboard/OEM Interior/Speed-D Switchboard Distribution Panel
- Country of Origin:
- United States
- Approval:
- UL, CSA
MSRP $91.21Surplus $29.73 -
Square D QOB120VH Miniature Circuit Breakers (MCBs) EA
MSRP $105.85Surplus $41.93Square D QOB120VH Miniature Circuit Breakers (MCBs) EA​ ARCA SKU: C15-4925 Brand: Square D MPN: QOB120VH UPC: 78590137173 Shipping Weight: 0.30 lbs. Shipping Height: 3.00 In...- SKU:
- C15-4925
- Series:
- QOB-VH
- Type:
- Miniature
- Type:
- Standard
- Approval:
- UL
- Approval:
- CSA
- Volts:
- 120/240 VAC 50/60 Hertz
- Volts:
- 48 VDC
- Amps:
- 32 A
- Used On:
- NQ Panelboard
- Poles:
- 1
- Interrupting Rating:
- 22 kA at 120/240 VAC
- Installation:
- Bolt-On
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 20 A, 22 kA, 1-Pole, Q-Frame, Bolt-On Mount, Pressure Plate Terminal, Miniature, Standard
- Catalog:
- SchneiderElectric-SquareD_32357_9_16_CAT.pdf
- Data Sheet:
- SchneiderElectric_21252_1_2_DATA.pdf
- Installation/Operator:
- SchneiderElectric-SquareD_02166_INST.pdf
- Manufacturer Warranty:
- SchneiderElectric-SquareD_00002_WARR.pdf
- TS PIK:
- 123857592
- Number of Poles:
- 1
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Current Rating:
- 20 A
- Country of Origin:
- United States
MSRP $105.85Surplus $41.93 -
Square D QOB320 Miniature Circuit Breakers (MCBs)
MSRP $430.77Surplus $115.71Square D QOB320 Miniature Circuit Breakers (MCBs)​ ARCA SKU: C15-6396 Brand: Square D MPN: QOB320 UPC: 78590141709 Shipping Weight: 2.50 lbs. Shipping Height: 3.00 In. Shipping...- SKU:
- C15-6396
- TS PIK:
- 124024414
- Current Rating:
- 20 A
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Used On:
- NQ Panelboard
- Installation/Operator:
- SchneiderElectric-SquareD_02166_INST.pdf
- Data Sheet:
- SchneiderElectric_21373_1_2_DATA.pdf
- Interrupting Rating:
- 10 kA at 120/240 VAC, 5 kA at 48 VDC
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 20 A, 10 kA, 3-Pole, Q-Frame, Bolt-On Mount, Pressure Plate Terminal, Miniature, Standard, Panelboard Circuit Breaker
- Catalog:
- SchneiderElectric-SquareD_32357_9_16_CAT.pdf
- Type:
- Miniature, Standard
- Series:
- QOB
- Number of Poles:
- 3
- Mounting:
- Bolt-On
- Country of Origin:
- Ireland
- Approval:
- UL, CSA
- Installation:
- Bolt-On
MSRP $430.77Surplus $115.71 -
Square D QOB2201021 Miniature Circuit Breakers (MCBs)
MSRP $378.44Surplus $434.53SKU: C15-6695 Brand: Square D MPN: QOB2201021 UPC: Shipping Weight: 0.90 lbs. Shipping Height: 4.00 In. Shipping Length: 5.00 In. Shipping Width: 4.00 In. Product...- SKU:
- C15-6695
- TS PIK:
- 111089509
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 20 A, 10 kA, 2-Pole, Q-Frame, Bolt-On Mount, Pressure Plate, Miniature, Standard, Panelboard Circuit Breaker with 120/208/240 VAC Shunt Trip Package
- Number of Poles:
- 2
- Catalog:
- SchneiderElectric-Telemecanique_00033_1_15_9_20_CAT.pdf
- Current Rating:
- 20 A
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Type:
- Miniature, Standard
- Interrupting Rating:
- 10 kA at 120/240 VAC, 5 kA at 48 VDC
- Series:
- QOB
- Data Sheet:
- SchneiderElectric_11070_1_2_DATA.pdf
- Installation/Operator:
- SchneiderElectric_00595_INST.pdf
- Main Category:
- Miniature Circuit Breakers (MCBs)
- Installation:
- Bolt-On
- Used On:
- NQ Panelboard
- Approval:
- UL, CSA
- Country of Origin:
- Mexico
MSRP $378.44Surplus $434.53 -
Contact Us For Quote
Square D QOB3201021 Molded Case Breakers (MCCBs)
MSRP $658.09Surplus $177.69SKU: C15-18876 Brand: Square D MPN: QOB3201021 UPC: 78590187592 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-18876
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Installation/Operator:
- SchneiderElectric_00595_INST.pdf
- Interrupting Rating:
- 10 kA at 120/240 VAC, 5 kA at 48 VDC
- Type:
- Miniature, Standard
- Data Sheet:
- SchneiderElectric_11128_1_2_DATA.pdf
- Catalog:
- SchneiderElectric-Telemecanique_00033_1_15_9_20_CAT.pdf
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 20 A, 10 kA, 3-Pole, Q-Frame, Bolt-On Mount, Pressure Plate, Miniature, Standard, Panelboard Circuit Breaker with 120/208/240 VAC Shunt Trip Package
- Number of Poles:
- 3
- Installation:
- Bolt-On
- Used On:
- NQ Panelboard
- Approval:
- UL, CSA
- Current Rating:
- 20 A
- Series:
- QOB
MSRP $658.09Surplus $177.69 -
Square D QOU120 Miniature Circuit Breakers (MCBs)
MSRP $54.72Surplus $32.96Square D QOU120 Miniature Circuit Breakers (MCBs)​ ARCA SKU: C15-6482 Brand: Square D MPN: QOU120 UPC: 78590141853 Shipping Weight: 0.35 lbs. Shipping Height: 1.00 In. Shipping...- SKU:
- C15-6482
- TS PIK:
- 21032857
- Installation/Operator:
- SchneiderElectric-SquareD_02170_INST.pdf
- Type:
- Miniature, Standard
- Mounting:
- DIN Rail/Unit/Surface/Flush
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Data Sheet:
- SchneiderElectric_21465_1_2_DATA.pdf
- Size:
- 0.75 Inch Width x 2.95 Inch Depth x 4.05 Inch Height
- Interrupting Rating:
- 10 kA
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 20 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
- Catalog:
- SchneiderElectric-SquareD_32357_7_19_7_21_CAT.pdf
- Current Rating:
- 20 A
- Used On:
- OEM
- Terminal Type:
- Slotted Box Lug Line/Load
- CAD Drawings:
- SchneiderElectric_30265_1_CAD.pdf
- Series:
- QOU
- Wire Size:
- 14 to 2 AWG (Copper/Aluminum)
- Country of Origin:
- United States
- Approval:
- UL, CSA
MSRP $54.72Surplus $32.96 -
Contact Us For Quote
Square D QOU1201021 Molded Case Breakers (MCCBs)
MSRP $539.07Surplus $145.55SKU: C15-17943 Brand: Square D MPN: QOU1201021 UPC: 78590151010 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-17943
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 20 A, 10 kA Interrupt, 1-Pole, 14 to 2 AWG Copper/Aluminum, Slotted Box Lug Line/Load Terminal, Standard, Shunt Trip, Miniature Circuit Breaker
- Current Rating:
- 20 A
- Number of Poles:
- 1
- Series:
- QOU
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Interrupting Rating:
- 10 kA
- Type:
- Miniature, Standard, Shunt Trip
- Terminal Type:
- Slotted Box Lug Line/Load
- Size:
- 1.5 Inch Width x 2.95 Inch Depth x 4.05 Inch Height
- Wire Size:
- 14 to 2 AWG (Copper/Aluminum)
- Approval:
- UL, CSA
- Catalog:
- SchneiderElectric-SquareD_32357_7_19_7_21_CAT.pdf
- Data Sheet:
- SchneiderElectric_21466_1_2_DATA.pdf
- Used On:
- OEM
- Mounting:
- DIN Rail/Unit/Surface/Flush
- Installation/Operator:
- SchneiderElectric-SquareD_02171_INST.pdf
MSRP $539.07Surplus $145.55 -
Square D QOU220 Miniature Circuit Breakers (MCBs)
MSRP $101.95Surplus $54.66SKU: C15-6401 Brand: Square D MPN: QOU220 UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In. Product...- SKU:
- C15-6401
- TS PIK:
- 125439274
- Number of Poles:
- 2
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Terminal Type:
- Slotted Box Lug Line/Load
- Mounting:
- DIN Rail/Unit/Surface/Flush
- Size:
- 1.5 Inch Width x 2.95 Inch Depth x 4.05 Inch Height
- CAD Drawings:
- SchneiderElectric_30265_1_CAD.pdf
- Data Sheet:
- SchneiderElectric_21549_1_2_DATA.pdf
- Used On:
- OEM
- Current Rating:
- 20 A
- Catalog:
- SchneiderElectric-SquareD_32357_7_19_7_21_CAT.pdf
- Installation/Operator:
- SchneiderElectric-SquareD_02171_INST.pdf
- Series:
- QOU
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 20 A, 10 kA Interrupt, 2-Pole, 14 to 2 AWG Copper/Aluminum, Unit Mount, Slotted Box Lug Line/Load Terminal, Standard, Miniature Circuit Breaker
- Wire Size:
- 14 to 2 AWG (Copper/Aluminum)
- Type:
- Miniature, Standard
- Interrupting Rating:
- 10 kA
- Approval:
- UL, CSA
- Country of Origin:
- Mexico
MSRP $101.95Surplus $54.66 -
Contact Us For Quote
Square D QOU2201021 Molded Case Breakers (MCCBs)
MSRP $379.80Surplus $102.55SKU: C15-17954 Brand: Square D MPN: QOU2201021 UPC: 78590151791 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-17954
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 20 A, 10 kA Interrupt, 2-Pole, 14 to 2 AWG Copper/Aluminum, Slotted Box Lug Line/Load Terminal, Shunt Trip, Standard, Miniature Circuit Breaker
- Size:
- 2.25 Inch Width x 2.95 Inch Depth x 4.05 Inch Height
- Series:
- QOU
- Terminal Type:
- Slotted Box Lug Line/Load
- Type:
- Miniature, Standard, Shunt Trip
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Data Sheet:
- SchneiderElectric_21550_1_2_DATA.pdf
- Number of Poles:
- 2
- Interrupting Rating:
- 10 kA
- Mounting:
- DIN Rail/Unit/Surface/Flush
- Installation/Operator:
- SchneiderElectric-SquareD_02171_INST.pdf
- Used On:
- OEM
- Current Rating:
- 20 A
- Wire Size:
- 14 to 2 AWG (Copper/Aluminum)
- Approval:
- UL, CSA
- Catalog:
- SchneiderElectric-SquareD_32357_7_19_7_21_CAT.pdf
MSRP $379.80Surplus $102.55 -
Square D QOU320 Miniature Circuit Breakers (MCBs)
MSRP $419.28Surplus $195.70SKU: C15-10933 Brand: Square D MPN: QOU320 UPC: 78590141889 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10933
- TS PIK:
- 111088453
- Wire Size:
- 14 to 2 AWG (Copper/Aluminum)
- Series:
- QOU
- Interrupting Rating:
- 10 kA
- Current Rating:
- 20 A
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Terminal Type:
- Slotted Box Lug Line/Load
- Size:
- 2.25 Inch Width x 2.95 Inch Depth x 4.05 Inch Height
- Used On:
- OEM
- CAD Drawings:
- SchneiderElectric_30265_1_CAD.pdf
- Number of Poles:
- 3
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 20 A, 10 kA Interrupt, 3-Pole, 14 to 2 AWG Copper/Aluminum, Unit Mount, Slotted Box Lug Line/Load Terminal, Standard, Miniature Circuit Breaker
- Catalog:
- SchneiderElectric-SquareD_32357_7_19_7_21_CAT.pdf
- Data Sheet:
- SchneiderElectric_21650_1_2_DATA.pdf
- Mounting:
- DIN Rail/Unit/Surface/Flush
- Type:
- Miniature, Standard
- Installation/Operator:
- SchneiderElectric-SquareD_02171_INST.pdf
- Approval:
- UL, CSA
- Country of Origin:
- Mexico
MSRP $419.28Surplus $195.70 -
Contact Us For Quote
Square D QOU3201021 Molded Case Breakers (MCCBs)
MSRP $496.87Surplus $134.16SKU: C15-17969 Brand: Square D MPN: QOU3201021 UPC: 78590151856 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-17969
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 20 A, 10 kA Interrupt, 3-Pole, 14 to 2 AWG Copper/Aluminum, Slotted Box Lug Line/Load Terminal, Shunt Trip, Standard, Miniature Circuit Breaker
- Data Sheet:
- SchneiderElectric_21651_1_2_DATA.pdf
- Catalog:
- SchneiderElectric-SquareD_32357_7_19_7_21_CAT.pdf
- Number of Poles:
- 3
- Type:
- Miniature, Standard, Shunt Trip
- Installation/Operator:
- SchneiderElectric-SquareD_02171_INST.pdf
- Series:
- QOU
- Terminal Type:
- Slotted Box Lug Line/Load
- Current Rating:
- 20 A
- Interrupting Rating:
- 10 kA
- Approval:
- UL, CSA
- Mounting:
- DIN Rail/Unit/Surface/Flush
- Wire Size:
- 14 to 2 AWG (Copper/Aluminum)
- Used On:
- OEM
- Size:
- 3 Inch Width x 2.95 Inch Depth x 4.05 Inch Height
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
MSRP $496.87Surplus $134.16
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