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 HOM245 Miniature Circuit Breakers (MCBs) 2P 45A 120V
MSRP $60.00Surplus $20.67Square D HOM245 Miniature Circuit Breakers (MCBs) 2P 45A 120V​ ARCA SKU: C15-6373 Brand: Square D MPN: HOM245 UPC: 78590106550 Shipping Weight: 0.70 lbs. Shipping Height: 2.00 In...- SKU:
- C15-6373
- TS PIK:
- 111860172
- Data Sheet:
- SchneiderElectric-SquareD_13455_1_2_DATA.pdf
- Used On:
- Homeline Load Center
- Wire Size:
- 8 to 2 AWG (Copper/Aluminum)
- Installation/Operator:
- SchneiderElectric-SquareD_00099_INST.pdf
- Voltage Rating:
- 120/240 VAC
- Catalog:
- SchneiderElectric_00257_1_19_1_39_7_22_7_23_CAT.pdf
- Interrupting Rating:
- 10 kA
- Current Rating:
- 45 A
- Number of Poles:
- 2
- Type:
- Common Trip, Main
- Mounting:
- Plug-On
- Short Description:
- 120/240 VAC, 45 A, 10 kA Interrupt, 2-Pole, 8 to 2 AWG Aluminum/Copper, Plug-In Mount, Box Lug Terminal, Standard, Miniature Circuit Breaker
- Series:
- HOM
- Terminal Type:
- Box Lug
- Country of Origin:
- United States
- Approval:
- UL
MSRP $60.00Surplus $20.67 -
Square D QO345 Miniature Circuit Breakers (MCBs)
MSRP $248.00Surplus $87.75Square 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 $248.00Surplus $87.75 -
Contact Us For Quote
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 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 -
Contact Us For Quote
Square D QO245GFI Molded Case Breakers (MCCBs)
MSRP $167.20Surplus $45.14SKU: C15-17782 Brand: Square D MPN: QO245GFI UPC: 78590150906 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-17782
- Used On:
- Load Center
- Size:
- 1.5 Inch Width x 2.91 Inch Depth x 4.13 Inch Height
- Installation/Operator:
- SchneiderElectric-SquareD_01265_INST.pdf
- Current Rating:
- 45 A
- Series:
- QO
- CAD Drawings:
- SchneiderElectric_30262_1_CAD.pdf
- Catalog:
- SchneiderElectric-SquareD_32357_1_2_1_5_CAT.pdf
- Interrupting Rating:
- 10 kA
- Number of Poles:
- 2
- Voltage Rating:
- 120/240 VAC 50/60 Hertz
- Data Sheet:
- SchneiderElectric-SquareD_53524_1_2_DATA.pdf
- Short Description:
- 120/240 VAC 50/60 Hz, 45 A, 10 kA Interrupt, 2-Pole, 8 to 2 AWG Copper/Aluminum, Plug-On Mount, Box Lug Terminal, Pigtail, Miniature Circuit Breaker
- Approval:
- UL, CSA
- Type:
- Miniature, Pigtail, Ground Fault Protecting
- Mounting:
- Plug-On
MSRP $167.20Surplus $45.14 -
Contact Us For Quote
Square D QO3451021 Molded Case Breakers (MCCBs)
MSRP $532.00Surplus $143.64SKU: C15-17805 Brand: Square D MPN: QO3451021 UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In. Product...- SKU:
- C15-17805
- Short Description:
- 120/240 VAC 50/60 Hz, 45 A, 10 kA Interrupt, 3-Pole, 8 to 2 AWG Aluminum/Copper, Plug-On Mount, Box Lug Terminal, Standard, AC Shunt Trip, Miniature Circuit Breaker
- Wire Size:
- 8 to 2 AWG (Aluminum/Copper)
- CAD Drawings:
- SchneiderElectric-SquareD_03059_1_CAD.pdf
- Used On:
- QO Load Center, NQOD Panelboard, OEM Interior/Speed-D Switchboard Distribution Panel
- Data Sheet:
- SchneiderElectric-SquareD_15062_1_2_DATA.pdf
- Terminal Type:
- Box Lug
- Type:
- Common Trip, Thermal Magnetic
- Interrupting Rating:
- 10 kA
- Approval:
- UL, CSA
- Size:
- 2.25 Inch W x 2.91 Inch D x 3 Inch H
- Catalog:
- SchneiderElectric-SquareD_03264_1_3_1_9_CAT.pdf
- Current Rating:
- 45 A
- Mounting:
- Plug-On
- Voltage Rating:
- 240 VAC at 50/60 Hz
- Number of Poles:
- 3
MSRP $532.00Surplus $143.64
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