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 $67.00Surplus $21.84Square 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 $67.00Surplus $21.84 -
Contact Us For Quote
Square D QO115 Miniature Circuit Breakers (MCBs) 15A 120V
MSRP $29.10Surplus $8.75Square D QO115 Miniature Circuit Breakers (MCBs) 15A 120V​ ARCA SKU: C15-1640 Brand: Square D MPN: QO115 UPC: 78590140006 Shipping Weight: 2.82 lbs. Shipping Height: 3.50 In...- SKU:
- C15-1640
- Series:
- QO
- Type:
- Thermal Magnetic
- Type:
- Duplex
- Approval:
- UL
- Approval:
- CSA
- Size:
- 0.75 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:
- 1
- Mounting:
- Plug-On
- Interrupting Rating:
- 5/10 kA
- Terminal Type:
- Pressure Plate
- Wire Size:
- 14 to 8 AWG (Copper/Aluminum)
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 15 A, 5/10 kA Interrupt, 1-Pole, 14 to 8 AWG Copper/Aluminum, Plug-In Mount, Pressure Plate Terminal, Standard
- Catalog:
- SchneiderElectric-SquareD_32357_1_2_1_3_CAT.pdf
- TS PIK:
- 597371
- Country of Origin:
- United States
- Current Rating:
- 15 A
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Number of Poles:
- 1
- Data Sheet:
- SchneiderElectric-SquareD_53323_1_2_DATA.pdf
- Installation/Operator:
- SchneiderElectric-SquareD_01207_INST.pdf
MSRP $29.10Surplus $8.75 -
Square D QO215 Miniature Circuit Breakers (MCBs) 2P 15A 120V
MSRP $67.00Surplus $25.20Square D QO215 Miniature Circuit Breakers (MCBs) 2P 15A 120V​ ARCA SKU: C15-6639 Brand: Square D MPN: QO215 UPC: 78590140030 Shipping Weight: 0.55 lbs. Shipping Height: 3.00 In...- SKU:
- C15-6639
- TS PIK:
- 21032732
- Wire Size:
- 14 to 8 AWG (Copper/Aluminum)
- Type:
- Common Trip, Miniature, Standard
- Catalog:
- SchneiderElectric-SquareD_32357_1_2_1_3_CAT.pdf
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Number of Poles:
- 2
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 15 A, 5/10 kA Interrupt, 2-Pole, 14 to 8 AWG Copper/Aluminum, Plug-In Mount, Pressure Plate Terminal, Standard, Miniature Circuit Breaker
- Used On:
- QO Load Center, NQ/NQOD Panelboard/OEM Interior/Speed-D Switchboard Distribution Panel
- Mounting:
- Plug-On
- Interrupting Rating:
- 5/10 kA
- Installation/Operator:
- SchneiderElectric-SquareD_01265_INST.pdf
- Current Rating:
- 15 A
- Data Sheet:
- SchneiderElectric-SquareD_53480_1_2_DATA.pdf
- Terminal Type:
- Pressure Plate
- Size:
- 1.5 Inch Width x 2.91 Inch Depth x 3.11 Inch Height
- Series:
- QO
- Country of Origin:
- Mexico
- Approval:
- UL, CSA
MSRP $67.00Surplus $25.20 -
Contact Us For Quote
Square D QO310 Miniature Circuit Breakers (MCBs)
MSRP $248.00Surplus $154.28Square D QO310 Miniature Circuit Breakers (MCBs)​ ARCA SKU: C15-6457 Brand: Square D MPN: QO310 UPC: 78590147748 Shipping Weight: 0.80 lbs. Shipping Height: 3.00 In. Shipping...- SKU:
- C15-6457
- TS PIK:
- 21032416
- Terminal Type:
- Pressure Plate
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 10 A, 5/10 kA Interrupt, 3-Pole, 14 to 8 AWG Copper/Aluminum, Plug-In Mount, Pressure Plate Terminal, Standard, Miniature Circuit Breaker
- Current Rating:
- 10 A
- Size:
- 2.24 Inch Width x 2.91 Inch Depth x 2.99 Inch Height
- Wire Size:
- 14 to 8 AWG (Copper/Aluminum)
- Type:
- Common Trip, Miniature, Standard
- Number of Poles:
- 3
- Installation/Operator:
- SchneiderElectric-SquareD_01265_INST.pdf
- Data Sheet:
- SchneiderElectric-SquareD_53555_1_2_DATA.pdf
- Interrupting Rating:
- 5/10 kA
- 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
- Series:
- QO
- Mounting:
- Plug-On
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Country of Origin:
- Mexico
- Approval:
- UL, CSA
MSRP $248.00Surplus $154.28 -
Square D QO240 Miniature Circuit Breakers (MCBs) 2P 40A 120V
MSRP $70.00Surplus $38.55Square D QO240 Miniature Circuit Breakers (MCBs) 2P 40A 120V​ ARCA SKU: C15-2712 Brand: Square D MPN: QO240 UPC: 78590140048 Shipping Weight: 0.60 lbs. Shipping Height: 2.00 In...- SKU:
- C15-2712
- Series:
- QO
- Type:
- Common Trip
- Type:
- Miniature
- Type:
- Standard
- Approval:
- UL
- Approval:
- CSA
- Size:
- 1.5 Inch Width x 2.91 Inch Depth x 3.11 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:
- 2
- 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, 2-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_53517_1_2_DATA.pdf
- Installation/Operator:
- SchneiderElectric-SquareD_01267_INST.pdf
- Manufacturer Warranty:
- SchneiderElectric-SquareD_00002_WARR.pdf
- TS PIK:
- 597387
- Current Rating:
- 40 A
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Number of Poles:
- 2
- Country of Origin:
- United States
MSRP $70.00Surplus $38.55 -
Contact Us For Quote
Square D QO125 Miniature Circuit Breakers (MCBs)
MSRP $29.10Surplus $11.04Square D QO125 Miniature Circuit Breakers (MCBs)​ ARCA SKU: C15-6580 Brand: Square D MPN: QO125 UPC: 78590101041 Shipping Weight: 0.25 lbs. Shipping Height: 3.00 In. Shipping...- SKU:
- C15-6580
- TS PIK:
- 109595034
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Number of Poles:
- 1
- Current Rating:
- 25 A
- Catalog:
- SchneiderElectric-SquareD_32357_1_2_1_3_CAT.pdf
- Type:
- Common Trip, Miniature, Standard
- Series:
- QO
- Installation/Operator:
- SchneiderElectric-SquareD_01207_INST.pdf
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 25 A, 5/10 kA Interrupt, 1-Pole, 14 to 8 AWG Copper/Aluminum, Plug-In Mount, Pressure Plate Terminal, Standard, Miniature Circuit Breaker
- Wire Size:
- 14 to 8 AWG (Copper/Aluminum)
- Mounting:
- Plug-On
- Used On:
- QO Load Center, NQ/NQOD Panelboard/OEM Interior/Speed-D Switchboard Distribution Panel
- Data Sheet:
- SchneiderElectric-SquareD_53378_1_2_DATA.pdf
- Terminal Type:
- Pressure Plate
- Size:
- 0.75 Inch Width x 2.91 Inch Depth x 2.99 Inch Height
- Interrupting Rating:
- 5/10 kA
- Country of Origin:
- Mexico
- Approval:
- UL, CSA
MSRP $29.10Surplus $11.04 -
Square D QO140 Miniature Circuit Breakers (MCBs) 40A 120V
MSRP $29.10Surplus $11.18Square D QO140 Miniature Circuit Breakers (MCBs) 40A 120V​ ARCA SKU: C15-6449 Brand: Square D MPN: QO140 UPC: 78590140018 Shipping Weight: 0.30 lbs. Shipping Height: 3.00 In...- SKU:
- C15-6449
- TS PIK:
- 123180738
- Mounting:
- Plug-On
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Data Sheet:
- SchneiderElectric-SquareD_53406_1_2_DATA.pdf
- Current Rating:
- 40 A
- Used On:
- QO Load Center, NQ/NQOD Panelboard/OEM Interior/Speed-D Switchboard Distribution Panel
- Series:
- QO
- Terminal Type:
- Box Lug
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 40 A, 5/10 kA Interrupt, 1-Pole, 8 to 2 AWG Copper/Aluminum, Plug-In Mount, Box Lug Terminal, Standard, Miniature Circuit Breaker
- Number of Poles:
- 1
- Wire Size:
- 8 to 2 AWG (Copper/Aluminum)
- Catalog:
- SchneiderElectric-SquareD_32357_1_2_1_3_CAT.pdf
- Type:
- Common Trip, Miniature, Standard
- Size:
- 0.75 Inch Width x 2.91 Inch Depth x 3.11 Inch Height
- Installation/Operator:
- SchneiderElectric-SquareD_01259_INST.pdf
- Interrupting Rating:
- 5/10 kA
- Country of Origin:
- Mexico
- Approval:
- UL, CSA
MSRP $29.10Surplus $11.18 -
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Square D QO145 Molded Case Breakers (MCCBs)
MSRP $24.00Surplus $6.48SKU: C15-17752 Brand: Square D MPN: QO145 UPC: 78590101200 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-17752
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 45 A, 5/10 kA Interrupt, 1-Pole, 8 to 2 AWG Copper/Aluminum, Plug-On Mount, Box Lug Terminal, Standard, Miniature Circuit Breaker
- Series:
- QO
- Current Rating:
- 45 A
- Used On:
- QO Load Center, NQ/NQOD Panelboard/OEM Interior/Speed-D Switchboard Distribution Panel
- Number of Poles:
- 1
- Mounting:
- Plug-On
- Data Sheet:
- SchneiderElectric-SquareD_53430_1_2_DATA.pdf
- Wire Size:
- 8 to 2 AWG (Copper/Aluminum)
- Size:
- 0.75 Inch Width x 2.91 Inch Depth x 3.11 Inch Height
- Approval:
- UL, CSA
- Catalog:
- SchneiderElectric-SquareD_32357_1_2_1_3_CAT.pdf
- Terminal Type:
- Box Lug
- Interrupting Rating:
- 5/10 kA
- Type:
- Common Trip, Miniature, Standard
- Installation/Operator:
- SchneiderElectric-SquareD_01259_INST.pdf
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
MSRP $24.00Surplus $6.48 -
Contact Us For Quote
Square D QO210 Miniature Circuit Breakers (MCBs)
MSRP $67.00Surplus $34.58Square D QO210 Miniature Circuit Breakers (MCBs)​ ARCA SKU: C15-6583 Brand: Square D MPN: QO210 UPC: 78590120560 Shipping Weight: 0.55 lbs. Shipping Height: 3.00 In. Shipping...- SKU:
- C15-6583
- TS PIK:
- 118952390
- Interrupting Rating:
- 5/10 kA
- Number of Poles:
- 2
- Size:
- 1.5 Inch Width x 2.91 Inch Depth x 2.99 Inch Height
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Catalog:
- SchneiderElectric-SquareD_32357_1_2_1_3_CAT.pdf
- Series:
- QO
- Used On:
- QO Load Center, NQ/NQOD Panelboard/OEM Interior/Speed-D Switchboard Distribution Panel
- Terminal Type:
- Pressure Plate
- Installation/Operator:
- SchneiderElectric-SquareD_01265_INST.pdf
- Data Sheet:
- SchneiderElectric-SquareD_53468_1_2_DATA.pdf
- Type:
- Common Trip, Miniature, Standard
- Mounting:
- Plug-On
- Wire Size:
- 14 to 8 AWG (Copper/Aluminum)
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 10 A, 5/10 kA Interrupt, 2-Pole, 14 to 8 AWG Copper/Aluminum, Plug-In Mount, Pressure Plate Terminal, Standard, Miniature Circuit Breaker
- Current Rating:
- 10 A
- Country of Origin:
- Mexico
- Approval:
- UL, CSA
MSRP $67.00Surplus $34.58 -
Square D QO225 Miniature Circuit Breakers (MCBs) QO 2P 25A 120V 50/60Hz 1Ph
MSRP $350.00Surplus $23.68Square D QO225 Miniature Circuit Breakers (MCBs) QO 2P 25A 120V 50/60Hz 1Ph​ ARCA SKU: C15-2572 Brand: Square D MPN: QO225 UPC: 785901012412 Shipping Weight: 0.55 Shipping Height: 4.00 In...- SKU:
- C15-2572
- Series:
- QO
- Type:
- Common Trip
- Type:
- Miniature
- Type:
- Standard
- Approval:
- UL
- Approval:
- CSA
- Size:
- 1.5 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:
- 2
- Mounting:
- Plug-On
- Interrupting Rating:
- 5/10 kA
- Terminal Type:
- Pressure Plate
- Wire Size:
- 14 to 8 AWG (Copper/Aluminum)
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 25 A, 5/10 kA Interrupt, 2-Pole, 14 to 8 AWG Copper/Aluminum, Plug-In Mount, Pressure Plate Terminal, Standard
- Catalog:
- SchneiderElectric-SquareD_32357_1_2_1_3_CAT.pdf
- Data Sheet:
- SchneiderElectric-SquareD_53530_1_2_DATA.pdf
- Installation/Operator:
- SchneiderElectric-SquareD_01265_INST.pdf
- Manufacturer Warranty:
- SchneiderElectric-SquareD_00002_WARR.pdf
- Number of Poles:
- 2
- Current Rating:
- 25 A
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Country of Origin:
- Ireland
MSRP $350.00Surplus $23.68 -
Contact Us For Quote
Square D QO245 Everything Else
MSRP $57.08Surplus $37.24Square D QO245 Everything Else​ ARCA SKU: C15-6455 Brand: Square D MPN: QO245 UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In...- SKU:
- C15-6455
- TS PIK:
- 21032365
- Type:
- Common Trip, Miniature, Standard
- Series:
- QO
- Number of Poles:
- 2
- Mounting:
- Plug-On
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- 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:
- 5/10 kA
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 45 A, 5/10 kA Interrupt, 2-Pole, 8 to 2 AWG Copper/Aluminum, Plug-On Mount, Box Lug Terminal, Standard, Miniature Circuit Breaker
- Data Sheet:
- SchneiderElectric-SquareD_53523_1_2_DATA.pdf
- Wire Size:
- 8 to 2 AWG (Copper/Aluminum)
- Installation/Operator:
- SchneiderElectric-SquareD_01265_INST.pdf
- Current Rating:
- 45 A
- Terminal Type:
- Box Lug
- Size:
- 1.5 Inch Width x 2.91 Inch Depth x 3.11 Inch Height
- Country of Origin:
- Mexico
- Approval:
- UL, CSA
MSRP $57.08Surplus $37.24 -
Square D QO325 Everything Else
MSRP $230.00Surplus $141.69SKU: C15-8652 Brand: Square D MPN: QO325 UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In. Product...- SKU:
- C15-8652
- TS PIK:
- 120851680
- Approval:
- UL, CSA
- Mounting:
- Plug-On
- Series:
- QO
- Installation/Operator:
- SchneiderElectric-SquareD_01265_INST.pdf
- Interrupting Rating:
- 5/10 kA
- Size:
- 2.24 Inch Width x 2.91 Inch Depth x 2.99 Inch Height
- Type:
- Common Trip, Miniature, Standard
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 25 A, 5/10 kA Interrupt, 3-Pole, 14 to 8 AWG Copper/Aluminum, Plug-On Mount, Pressure Plate Terminal, Standard, Miniature Circuit Breaker
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Wire Size:
- 14 to 8 AWG (Copper/Aluminum)
- Number of Poles:
- 3
- Terminal Type:
- Pressure Plate
- Catalog:
- SchneiderElectric-SquareD_32357_1_2_1_3_CAT.pdf
- Used On:
- QO Load Center, NQ/NQOD Panelboard/OEM Interior/Speed-D Switchboard Distribution Panel
- Current Rating:
- 25 A
- Data Sheet:
- SchneiderElectric-SquareD_53576_1_2_DATA.pdf
- Country of Origin:
- Mexico
MSRP $230.00Surplus $141.69 -
Square D QO340 Miniature Circuit Breakers (MCBs) 3P 40A 240V
MSRP $273.00Surplus $67.20Square 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 $273.00Surplus $67.20
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