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 QOB250 Miniature Circuit Breakers (MCBs) 2P 50A 120V EA
MSRP $124.61Surplus $33.35Square D QOB250 Miniature Circuit Breakers (MCBs) 2P 50A 120V EA​ ARCA SKU: C15-6658 Brand: Square D MPN: QOB250 UPC: 78590141698 Shipping Weight: 0.60 lbs. Shipping Height: 3.11 In...- SKU:
- C15-6658
- TS PIK:
- 111088427
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Series:
- QOB
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 50 A, 10 kA, 2-Pole, Q-Frame, Bolt-On Mount, Box Lug Terminal, Miniature, Standard, Panelboard Circuit Breaker
- Current Rating:
- 50 A
- Number of Poles:
- 2
- Type:
- Miniature, Standard
- Interrupting Rating:
- 10 kA at 120/240 VAC, 5 kA at 48 VDC
- Catalog:
- SchneiderElectric-SquareD_32357_9_16_CAT.pdf
- Data Sheet:
- SchneiderElectric_21336_1_2_DATA.pdf
- Installation/Operator:
- SchneiderElectric-SquareD_02166_INST.pdf
- Used On:
- NQ Panelboard
- Mounting:
- Bolt-On
- Country of Origin:
- United States
- Approval:
- UL, CSA
- Installation:
- Bolt-On
MSRP $124.61Surplus $33.35 -
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Square D QOB150 Everything Else
MSRP $43.89Surplus $35.31Square D QOB150 Everything Else​ ARCA SKU: C15-6389 Brand: Square D MPN: QOB150 UPC: 78590141680 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0...- SKU:
- C15-6389
- TS PIK:
- 111088422
- Series:
- QOB
- Current Rating:
- 50 A
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Data Sheet:
- SchneiderElectric_21277_1_2_DATA.pdf
- Catalog:
- SchneiderElectric-SquareD_32357_9_16_CAT.pdf
- Interrupting Rating:
- 10 kA at 120/240 VAC, 5 kA at 48 VDC
- Installation/Operator:
- SchneiderElectric-SquareD_02166_INST.pdf
- Used On:
- NQ Panelboard
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 50 A, 10 kA, 1-Pole, Q-Frame, Bolt-On Mount, Box Lug Terminal, Miniature, Standard, Panelboard Circuit Breaker
- Type:
- Miniature, Standard
- Number of Poles:
- 1
- Mounting:
- Bolt-On
- Country of Origin:
- United States
- Approval:
- UL, CSA
- Installation:
- Bolt-On
MSRP $43.89Surplus $35.31 -
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Square D QOB150VH Molded Case Breakers (MCCBs)
MSRP $111.63Surplus $30.14SKU: C15-17844 Brand: Square D MPN: QOB150VH UPC: 78590173190 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-17844
- Number of Poles:
- 1
- Current Rating:
- 50 A
- Catalog:
- SchneiderElectric-SquareD_32357_9_16_CAT.pdf
- Interrupting Rating:
- 22 kA at 120/240 VAC
- Data Sheet:
- SchneiderElectric_21279_1_2_DATA.pdf
- Installation/Operator:
- SchneiderElectric-SquareD_02166_INST.pdf
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Series:
- QOB-VH
- Type:
- Miniature, Standard
- Approval:
- UL, CSA
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 50 A, 22 kA, 1-Pole, Q-Frame, Bolt-On Mount, Box Lug Terminal, Miniature, Standard, Panelboard Circuit Breaker
- Used On:
- NQ Panelboard
- Installation:
- Bolt-On
MSRP $111.63Surplus $30.14 -
Contact Us For Quote
Square D QOB2501021 Molded Case Breakers (MCCBs)
MSRP $449.23Surplus $121.29SKU: C15-18871 Brand: Square D MPN: QOB2501021 UPC: 78590149434 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-18871
- Approval:
- UL, CSA
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Current Rating:
- 50 A
- Used On:
- NQ Panelboard
- Number of Poles:
- 2
- Type:
- Miniature, Standard
- Data Sheet:
- SchneiderElectric_11107_1_2_DATA.pdf
- Catalog:
- SchneiderElectric-Telemecanique_00033_1_15_9_20_CAT.pdf
- Installation/Operator:
- SchneiderElectric_00595_INST.pdf
- Interrupting Rating:
- 10 kA at 120/240 VAC, 5 kA at 48 VDC
- Series:
- QOB
- Installation:
- Bolt-On
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 50 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
MSRP $449.23Surplus $121.29 -
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Square D QOB350 Molded Case Breakers (MCCBs)
MSRP $430.77Surplus $156.62SKU: C15-8956 Brand: Square D MPN: QOB350 UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In. Product...- SKU:
- C15-8956
- TS PIK:
- 111088434
- Interrupting Rating:
- 10 kA at 120/240 VAC, 5 kA at 48 VDC
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 50 A, 10 kA, 3-Pole, Q-Frame, Bolt-On Mount, Box Lug Terminal, Miniature, Standard, Panelboard Circuit Breaker
- Installation/Operator:
- SchneiderElectric-SquareD_02166_INST.pdf
- Series:
- QOB
- Installation:
- Bolt-On
- Number of Poles:
- 3
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Type:
- Miniature, Standard
- Data Sheet:
- SchneiderElectric_21397_1_2_DATA.pdf
- Approval:
- UL, CSA
- Catalog:
- SchneiderElectric-SquareD_32357_9_16_CAT.pdf
- Used On:
- NQ Panelboard
- Current Rating:
- 50 A
MSRP $430.77Surplus $156.62 -
Square D QOB350VH Miniature Circuit Breakers (MCBs)
MSRP $646.89Surplus $322.27SKU: C15-8614 Brand: Square D MPN: QOB350VH UPC: 78590105482 Shipping Weight: 0.55 lbs. Shipping Height: 3.00 In. Shipping Length: 3.25 In. Shipping Width: 1.40 In...- SKU:
- C15-8614
- TS PIK:
- 21331646
- Type:
- Miniature, Standard
- Current Rating:
- 50 A
- Number of Poles:
- 3
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Installation/Operator:
- SchneiderElectric-SquareD_02166_INST.pdf
- Series:
- QOB-VH
- Catalog:
- SchneiderElectric-SquareD_32357_9_16_CAT.pdf
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 50 A, 22 kA, 3-Pole, Q-Frame, Bolt-On Mount, Box Lug Terminal, Miniature, Standard, Panelboard Circuit Breaker
- Data Sheet:
- SchneiderElectric_21401_1_2_DATA.pdf
- Interrupting Rating:
- 22 kA at 120/240 VAC
- Used On:
- NQ Panelboard
- Approval:
- UL, CSA
- Installation:
- Bolt-On
MSRP $646.89Surplus $322.27 -
Square D QOU250 Miniature Circuit Breakers (MCBs) EA
MSRP $126.60Surplus $69.71SKU: C15-10929 Brand: Square D MPN: QOU250 UPC: 78590141877 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10929
- TS PIK:
- 111088449
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 50 A, 10 kA Interrupt, 2-Pole, 14 to 2 AWG Copper/Aluminum, Unit Mount, Slotted Box Lug Line/Load Terminal, Standard, Miniature Circuit Breaker
- Type:
- Miniature, Standard
- Series:
- QOU
- Size:
- 1.5 Inch Width x 2.95 Inch Depth x 4.05 Inch Height
- Current Rating:
- 50 A
- 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
- Interrupting Rating:
- 10 kA
- CAD Drawings:
- SchneiderElectric_30265_1_CAD.pdf
- Used On:
- OEM
- Wire Size:
- 14 to 2 AWG (Copper/Aluminum)
- Installation/Operator:
- SchneiderElectric-SquareD_02171_INST.pdf
- Data Sheet:
- SchneiderElectric_21593_1_2_DATA.pdf
- Catalog:
- SchneiderElectric-SquareD_32357_7_19_7_21_CAT.pdf
- Approval:
- UL, CSA
MSRP $126.60Surplus $69.71 -
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Square D QOU2501021 Molded Case Breakers (MCCBs)
MSRP $362.11Surplus $97.77SKU: C15-17958 Brand: Square D MPN: QOU2501021 UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In. Product...- SKU:
- C15-17958
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 50 A, 10 kA Interrupt, 2-Pole, 14 to 2 AWG Copper/Aluminum, Slotted Box Lug Line/Load Terminal, Shunt Trip, Standard, Miniature Circuit Breaker
- Series:
- QOU
- Size:
- 2.25 Inch Width x 2.95 Inch Depth x 4.05 Inch Height
- Terminal Type:
- Slotted Box Lug Line/Load
- Number of Poles:
- 2
- Type:
- Miniature, Standard, Shunt Trip
- Installation/Operator:
- SchneiderElectric-SquareD_02171_INST.pdf
- Mounting:
- DIN Rail/Unit/Surface/Flush
- Wire Size:
- 14 to 2 AWG (Copper/Aluminum)
- Approval:
- UL, CSA
- Interrupting Rating:
- 10 kA
- Used On:
- OEM
- Current Rating:
- 50 A
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Data Sheet:
- SchneiderElectric_21594_1_2_DATA.pdf
- Catalog:
- SchneiderElectric-SquareD_32357_7_19_7_21_CAT.pdf
MSRP $362.11Surplus $97.77 -
Square D QOU350 Miniature Circuit Breakers (MCBs)
MSRP $419.28Surplus $195.70SKU: C15-10936 Brand: Square D MPN: QOU350 UPC: 78590141898 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10936
- TS PIK:
- 111088456
- Number of Poles:
- 3
- Series:
- QOU
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 50 A, 10 kA Interrupt, 3-Pole, 14 to 2 AWG Copper/Aluminum, Unit Mount, Slotted Box Lug Line/Load Terminal, Standard, Miniature Circuit Breaker
- Current Rating:
- 50 A
- Terminal Type:
- Slotted Box Lug Line/Load
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Interrupting Rating:
- 10 kA
- Used On:
- OEM
- Wire Size:
- 14 to 2 AWG (Copper/Aluminum)
- Installation/Operator:
- SchneiderElectric-SquareD_02171_INST.pdf
- CAD Drawings:
- SchneiderElectric_30265_1_CAD.pdf
- Size:
- 2.25 Inch Width x 2.95 Inch Depth x 4.05 Inch Height
- Type:
- Miniature, Standard
- Catalog:
- SchneiderElectric-SquareD_32357_7_19_7_21_CAT.pdf
- Data Sheet:
- SchneiderElectric_21687_1_2_DATA.pdf
- Mounting:
- DIN Rail/Unit/Surface/Flush
- Approval:
- UL, CSA
MSRP $419.28Surplus $195.70 -
Contact Us For Quote
Square D QOU3501021 Molded Case Breakers (MCCBs)
MSRP $646.62Surplus $174.59SKU: C15-17978 Brand: Square D MPN: QOU3501021 UPC: 78590151865 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-17978
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 50 A, 10 kA Interrupt, 3-Pole, 14 to 2 AWG Copper/Aluminum, Slotted Box Lug Line/Load Terminal, Shunt Trip, Standard, Miniature Circuit Breaker
- Approval:
- UL, CSA
- Interrupting Rating:
- 10 kA
- Wire Size:
- 14 to 2 AWG (Copper/Aluminum)
- Catalog:
- SchneiderElectric-SquareD_32357_7_19_7_21_CAT.pdf
- Terminal Type:
- Slotted Box Lug Line/Load
- Type:
- Miniature, Standard, Shunt Trip
- Data Sheet:
- SchneiderElectric_21688_1_2_DATA.pdf
- Current Rating:
- 50 A
- Number of Poles:
- 3
- Series:
- QOU
- Size:
- 3 Inch Width x 2.95 Inch Depth x 4.05 Inch Height
- Installation/Operator:
- SchneiderElectric-SquareD_02171_INST.pdf
- Mounting:
- DIN Rail/Unit/Surface/Flush
- Used On:
- OEM
MSRP $646.62Surplus $174.59
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