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
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- Qty in Cart
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Square D QO250H Molded Case Breakers (MCCBs)
MSRP $312.00Surplus $84.24SKU: C15-17783 Brand: Square D MPN: QO250H UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In. Product...- SKU:
- C15-17783
- Catalog:
- SchneiderElectric-SquareD_03264_1_3_CAT.pdf
- Used On:
- QO Load Center, NQOD Panelboard, OEM Interior/Speed-D Switchboard Distribution Panel
- CAD Drawings:
- SchneiderElectric-SquareD_05484_1_CAD.pdf
- Short Description:
- 120/240 VAC 50/60 Hz, 50 A, 10 kA Interrupt, 2-Pole, Plug-On Mount, 2-Panel Space, Box Lug Terminal, Standard, Miniature Circuit Breaker
- Data Sheet:
- SchneiderElectric-SquareD_14986_1_2_DATA.pdf
- Mounting:
- Plug-On
- Type:
- Common Trip, Thermal Magnetic
- Voltage Rating:
- 240 VAC at 50/60 Hz
- Size:
- 1.5 Inch W x 2.91 Inch D x 3 Inch H
- Current Rating:
- 50 A
- Number of Poles:
- 2
- Approval:
- UL, CSA
- Installation/Operator:
- SchneiderElectric-SquareD_00194_INST.pdf
- Terminal Type:
- Box Lug
- Series:
- QO-H
- Wire Size:
- 8 to 2 AWG (Aluminum/Copper)
- Interrupting Rating:
- 10 kA at 240 VAC, 5 kA at 48 VDC
MSRP $312.00Surplus $84.24 -
Square D QO3030 Miniature Circuit Breakers (MCBs) QO 1P 30A 120V 50/60Hz 1Ph
MSRP $95.00Surplus $92.40Square D QO3030 Miniature Circuit Breakers (MCBs) QO 1P 30A 120V 50/60Hz 1Ph​ ARCA SKU: C15-2180 Brand: Square D MPN: QO3030 UPC: 785901400967 Shipping Weight: 0.35 Shipping Height: 1.00...- SKU:
- C15-2180
- Type:
- Bi-Metallic
- Type:
- Thermal
- Approval:
- UL
- Approval:
- CSA
- Size:
- 2.25 Inch W x 2.91 Inch D x 3 Inch H
- Volts:
- 240 VAC at 50/60 Hz
- Amps:
- 32 A
- Used On:
- QO Load Center
- Used On:
- NQOD Panelboard
- Used On:
- OEM Interior/Speed-D Switchboard Distribution Panel
- Poles:
- 3
- Mounting:
- Plug-On
- Interrupting Rating:
- 10 kA
- Enclosure:
- IP20
- Terminal Type:
- Pressure Plate
- Wire Size:
- 14 to 8 AWG (Aluminum/Copper)
- Wire Size:
- (2) 14 to 10 AWG (Copper)
- Short Description:
- 120/240 VAC 50/60 Hz, 30 A, 10 kA Interrupt, 1-Pole, 14 to 8 AWG Aluminum/Copper, Plug-In Mount, Box Lug Terminal, Tandem
- Catalog:
- SchneiderElectric-SquareD_03264_1_3_CAT.pdf
- Data Sheet:
- Eaton_41010_1-6_DATA.pdf
- Voltage Rating:
- 240 VAC at 50/60 Hz
- Current Rating:
- 30 A
- Number of Poles:
- 3
- Installation/Operator:
- SchneiderElectric-SquareD_00194_INST.pdf
- Country of Origin:
- Mexico
MSRP $95.00Surplus $92.40 -
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Square D QO31001021 Molded Case Breakers (MCCBs)
MSRP $1,038.00Surplus $756.00SKU: C15-10901 Brand: Square D MPN: QO31001021 UPC: 78590103056 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10901
- TS PIK:
- 111080602
- Type:
- Common Trip, Thermal Magnetic
- Interrupting Rating:
- 10 kA
- Number of Poles:
- 3
- Size:
- 2.25 Inch W x 2.91 Inch D x 3 Inch H
- Data Sheet:
- SchneiderElectric-SquareD_15014_1_2_DATA.pdf
- Short Description:
- 120/240 VAC 50/60 Hz, 100 A, 10 kA Interrupt, 3-Pole, 4 to 2/0 AWG Aluminum/Copper, Plug-On Mount, Box Lug Terminal, Standard, AC Shunt Trip, Miniature Circuit Breaker
- Wire Size:
- 4 to 2/0 AWG (Aluminum/Copper)
- Voltage Rating:
- 240 VAC at 50/60 Hz
- Catalog:
- SchneiderElectric-SquareD_03264_1_3_1_9_CAT.pdf
- Current Rating:
- 100 A
- Approval:
- UL, CSA
- Used On:
- QO Load Center, NQOD Panelboard, OEM Interior/Speed-D Switchboard Distribution Panel
- Terminal Type:
- Box Lug
- CAD Drawings:
- SchneiderElectric-SquareD_17845_1_CAD.pdf
- Mounting:
- Plug-On
MSRP $1,038.00Surplus $756.00 -
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Square D QO3151021 Molded Case Breakers (MCCBs)
MSRP $626.00Surplus $169.02SKU: C15-17793 Brand: Square D MPN: QO3151021 UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In. Product...- SKU:
- C15-17793
- Approval:
- UL, CSA
- Short Description:
- 120/240 VAC 50/60 Hz, 15 A, 10 kA Interrupt, 3-Pole, 14 to 8 AWG Aluminum/Copper, Plug-On Mount, Pressure Plate Terminal, Standard, AC Shunt Trip, Miniature Circuit Breaker
- Terminal Type:
- Pressure Plate
- Size:
- 2.25 Inch W x 2.91 Inch D x 3 Inch H
- Number of Poles:
- 3
- Current Rating:
- 15 A
- Catalog:
- SchneiderElectric-SquareD_03264_1_3_1_9_CAT.pdf
- Used On:
- QO Load Center, NQOD Panelboard, OEM Interior/Speed-D Switchboard Distribution Panel
- Wire Size:
- 14 to 8 AWG (Aluminum/Copper), (2) 14 to 10 AWG (Copper)
- Data Sheet:
- SchneiderElectric-SquareD_15024_1_2_DATA.pdf
- CAD Drawings:
- SchneiderElectric-SquareD_03058_1_CAD.pdf
- Voltage Rating:
- 240 VAC at 50/60 Hz
- Interrupting Rating:
- 10 kA
- Type:
- Common Trip, Thermal Magnetic
- Mounting:
- Plug-On
MSRP $626.00Surplus $169.02 -
Square D QO3201021 Miniature Circuit Breakers (MCBs)
MSRP $437.00Surplus $334.13SKU: C15-10902 Brand: Square D MPN: QO3201021 UPC: 78590149409 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10902
- TS PIK:
- 111089501
- Terminal Type:
- Pressure Plate
- Short Description:
- 120/240 VAC 50/60 Hz, 20 A, 10 kA Interrupt, 3-Pole, 14 to 8 AWG Aluminum/Copper, Plug-On Mount, Pressure Plate Terminal, Standard, AC Shunt Trip, Miniature Circuit Breaker
- Wire Size:
- 14 to 8 AWG (Aluminum/Copper), (2) 14 to 10 AWG (Copper)
- Catalog:
- SchneiderElectric-SquareD_03264_1_3_1_9_CAT.pdf
- Mounting:
- Plug-On
- Current Rating:
- 20 A
- Data Sheet:
- SchneiderElectric-SquareD_15027_1_2_DATA.pdf
- Number of Poles:
- 3
- Interrupting Rating:
- 10 kA
- CAD Drawings:
- SchneiderElectric-SquareD_03058_1_CAD.pdf
- Size:
- 2.25 Inch W x 2.91 Inch D x 3 Inch H
- Used On:
- QO Load Center, NQOD Panelboard, OEM Interior/Speed-D Switchboard Distribution Panel
- Voltage Rating:
- 240 VAC at 50/60 Hz
- Type:
- Common Trip, Thermal Magnetic
- Approval:
- UL, CSA
- Country of Origin:
- Mexico
MSRP $437.00Surplus $334.13 -
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Square D QO3301021 Miniature Circuit Breakers (MCBs) EA
MSRP $437.00Surplus $430.92Square D QO3301021 Miniature Circuit Breakers (MCBs) EA​ ARCA SKU: C15-10903 Brand: Square D MPN: QO3301021 UPC: 785901494119 Shipping Weight: 1.20 lbs. Shipping Height: 4.00 In...- SKU:
- C15-10903
- TS PIK:
- 111089502
- Catalog:
- SchneiderElectric-SquareD_03264_1_3_1_9_CAT.pdf
- Terminal Type:
- Pressure Plate
- Type:
- Common Trip, Thermal Magnetic
- Current Rating:
- 30 A
- Short Description:
- 120/240 VAC 50/60 Hz, 30 A, 10 kA Interrupt, 3-Pole, 14 to 8 AWG Aluminum/Copper, Plug-On Mount, Pressure Plate Terminal, Standard, AC Shunt Trip, Miniature Circuit Breaker
- Mounting:
- Plug-On
- Voltage Rating:
- 240 VAC at 50/60 Hz
- Data Sheet:
- SchneiderElectric-SquareD_15039_1_2_DATA.pdf
- Interrupting Rating:
- 10 kA
- CAD Drawings:
- SchneiderElectric-SquareD_03068_1_CAD.pdf
- Used On:
- QO Load Center, NQOD Panelboard, OEM Interior/Speed-D Switchboard Distribution Panel
- Wire Size:
- 14 to 8 AWG (Aluminum/Copper), (2) 14 to 10 AWG (Copper)
- Size:
- 2.25 Inch W x 2.91 Inch D x 3 Inch H
- Number of Poles:
- 3
- Approval:
- UL, CSA
MSRP $437.00Surplus $430.92 -
Square D QO3401021 Miniature Circuit Breakers (MCBs) QO 3P 40A 240V 50/60Hz 3Ph
MSRP $498.00Surplus $505.40Square D QO3401021 Miniature Circuit Breakers (MCBs) QO 3P 40A 240V 50/60Hz 3Ph​ ARCA SKU: C15-4849 Brand: Square D MPN: QO3401021 UPC: 785901494126 Shipping Weight: 1.20 Shipping...- SKU:
- C15-4849
- Type:
- Common Trip
- Type:
- Thermal Magnetic
- Approval:
- UL
- Approval:
- CSA
- Size:
- 2.25 Inch W x 2.91 Inch D x 3 Inch H
- Volts:
- 240 VAC at 50/60 Hz
- Amps:
- 32 A
- Used On:
- QO Load Center
- Used On:
- NQOD Panelboard
- Used On:
- OEM Interior/Speed-D Switchboard Distribution Panel
- Poles:
- 3
- Mounting:
- Plug-On
- Interrupting Rating:
- 10 kA
- Terminal Type:
- Box Lug
- Wire Size:
- 8 to 2 AWG (Aluminum/Copper)
- Short Description:
- 120/240 VAC 50/60 Hz, 40 A, 10 kA Interrupt, 3-Pole, 8 to 2 AWG Aluminum/Copper, Plug-In Mount, Box Lug Terminal, Standard, AC Shunt Trip
- Catalog:
- SchneiderElectric-SquareD_03264_1_3_1_9_CAT.pdf
- Data Sheet:
- SchneiderElectric-SquareD_15051_1_2_DATA.pdf
- Country of Origin:
- United States
- Voltage Rating:
- 240 VAC at 50/60 Hz
- Current Rating:
- 40 A
- Number of Poles:
- 3
MSRP $498.00Surplus $505.40 -
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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 -
Square D QO3501021 Molded Case Breakers (MCCBs)
MSRP $495.00Surplus $345.80SKU: U00-8581 Brand: Square D MPN: QO3501021 UPC: 78590149415 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- U00-8581
- Voltage Rating:
- 240 VAC at 50/60 Hz
- Data Sheet:
- SchneiderElectric-SquareD_15063_1_2_DATA.pdf
- Current Rating:
- 50 A
- Wire Size:
- 8 to 2 AWG (Aluminum/Copper)
- CAD Drawings:
- SchneiderElectric-SquareD_03059_1_CAD.pdf
- Approval:
- UL, CSA
- Catalog:
- SchneiderElectric-SquareD_03264_1_3_1_9_CAT.pdf
- Terminal Type:
- Box Lug
- Used On:
- QO Load Center, NQOD Panelboard, OEM Interior/Speed-D Switchboard Distribution Panel
- Mounting:
- Plug-On
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 50 A, 10 kA Interrupt, 3-Pole, Plug-On Mount, 4-Panel Space, Box Lug Terminal, AC Shunt Trip, Standard, Miniature Circuit Breaker
- Type:
- Common Trip, Thermal Magnetic
- Interrupting Rating:
- 10 kA
- Number of Poles:
- 3
- Size:
- 2.25 Inch W x 2.91 Inch D x 3 Inch H
- Country of Origin:
- Mexico
MSRP $495.00Surplus $345.80 -
Square D QO3601021 Molded Case Breakers (MCCBs)
MSRP $437.00Surplus $303.75SKU: C15-8681 Brand: Square D MPN: QO3601021 UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In. Product...- SKU:
- C15-8681
- TS PIK:
- 21332107
- Catalog:
- SchneiderElectric-SquareD_03264_1_3_1_9_CAT.pdf
- Data Sheet:
- SchneiderElectric-SquareD_15066_1_2_DATA.pdf
- CAD Drawings:
- SchneiderElectric-SquareD_03059_1_CAD.pdf
- Interrupting Rating:
- 10 kA
- Terminal Type:
- Box Lug
- Voltage Rating:
- 240 VAC at 50/60 Hz
- Size:
- 2.25 Inch W x 2.91 Inch D x 3 Inch H
- Type:
- Common Trip, Thermal Magnetic
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 60 A, 10 kA Interrupt, 3-Pole, Plug-On Mount, 4-Panel Space, Box Lug Terminal, AC Shunt Trip, Standard, Miniature Circuit Breaker
- Number of Poles:
- 3
- Current Rating:
- 60 A
- Approval:
- UL, CSA
- Mounting:
- Plug-On
- Wire Size:
- 8 to 2 AWG (Aluminum/Copper)
- Used On:
- QO Load Center, NQOD Panelboard, OEM Interior/Speed-D Switchboard Distribution Panel
- Country of Origin:
- Mexico
MSRP $437.00Surplus $303.75 -
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Square D QO3701021 Molded Case Breakers (MCCBs)
MSRP $698.00Surplus $188.46SKU: C15-18860 Brand: Square D MPN: QO3701021 UPC: 78590103057 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-18860
- Voltage Rating:
- 240 VAC at 50/60 Hz
- Size:
- 2.25 Inch W x 2.91 Inch D x 3 Inch H
- Catalog:
- SchneiderElectric-SquareD_03264_1_3_1_9_CAT.pdf
- Short Description:
- 120/240 VAC 50/60 Hz, 70 A, 10 kA Interrupt, 3-Pole, Plug-On Mount, 4-Panel Space, Box Lug Terminal, AC Shunt Trip, Standard, Miniature Circuit Breaker
- Number of Poles:
- 3
- Type:
- Common Trip, Thermal Magnetic
- Terminal Type:
- Box Lug
- Interrupting Rating:
- 10 kA
- CAD Drawings:
- SchneiderElectric-SquareD_03059_1_CAD.pdf
- Wire Size:
- 8 to 2 AWG (Aluminum/Copper)
- Approval:
- UL, CSA
- Data Sheet:
- SchneiderElectric-SquareD_15069_1_2_DATA.pdf
- Used On:
- QO Load Center, NQOD Panelboard, OEM Interior/Speed-D Switchboard Distribution Panel
- Mounting:
- Plug-On
- Current Rating:
- 70 A
MSRP $698.00Surplus $188.46 -
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Square D QO3801021 Molded Case Breakers (MCCBs)
MSRP $869.40Surplus $234.74SKU: C15-18861 Brand: Square D MPN: QO3801021 UPC: 78590103058 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-18861
- Short Description:
- 120/240 VAC 50/60 Hz, 80 A, 10 kA Interrupt, 3-Pole, Plug-On Mount, 4-Panel Space, Box Lug Terminal, AC Shunt Trip, Standard, Miniature Circuit Breaker
- Wire Size:
- 4 to 2/0 AWG (Aluminum/Copper)
- Data Sheet:
- SchneiderElectric-SquareD_15072_1_2_DATA.pdf
- Size:
- 2.25 Inch W x 2.91 Inch D x 3 Inch H
- Voltage Rating:
- 240 VAC at 50/60 Hz
- Terminal Type:
- Box Lug
- Interrupting Rating:
- 10 kA
- Mounting:
- Plug-On
- CAD Drawings:
- SchneiderElectric-SquareD_17845_1_CAD.pdf
- Catalog:
- SchneiderElectric-SquareD_03264_1_3_1_9_CAT.pdf
- Current Rating:
- 80 A
- Approval:
- UL, CSA
- Used On:
- QO Load Center, NQOD Panelboard, OEM Interior/Speed-D Switchboard Distribution Panel
- Type:
- Common Trip, Thermal Magnetic
- Number of Poles:
- 3
MSRP $869.40Surplus $234.74 -
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Square D QO3901021 Molded Case Breakers (MCCBs)
MSRP $836.00Surplus $225.72SKU: C15-17808 Brand: Square D MPN: QO3901021 UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In. Product...- SKU:
- C15-17808
- Number of Poles:
- 3
- Terminal Type:
- Box Lug
- Short Description:
- 120/240 VAC 50/60 Hz, 90 A, 10 kA Interrupt, 3-Pole, Plug-On Mount, 4-Panel Space, Box Lug Terminal, AC Shunt Trip, Standard, Miniature Circuit Breaker
- Interrupting Rating:
- 10 kA
- Current Rating:
- 90 A
- Type:
- Common Trip, Thermal Magnetic
- Wire Size:
- 4 to 2/0 AWG (Aluminum/Copper)
- Mounting:
- Plug-On
- Data Sheet:
- SchneiderElectric-SquareD_15075_1_2_DATA.pdf
- Size:
- 2.25 Inch W x 2.91 Inch D x 3 Inch H
- CAD Drawings:
- SchneiderElectric-SquareD_17845_1_CAD.pdf
- Catalog:
- SchneiderElectric-SquareD_03264_1_3_1_9_CAT.pdf
- Used On:
- QO Load Center, NQOD Panelboard, OEM Interior/Speed-D Switchboard Distribution Panel
- Voltage Rating:
- 240 VAC at 50/60 Hz
- Approval:
- UL, CSA
MSRP $836.00Surplus $225.72
Disclaimer: ARCA Supply is not an authorized distributor, reseller or representative of any manufacturer, brand or product listed. All product names, trademarks, brands and logos are the property of their respective owners. The depiction, description or sale of products featuring these names, trademarks, brands and logos is for identification purposes only and is not intended to indicate any affiliation with or authorization by any rights holder. All items sold by ARCA Supply are covered under ARCA Supply's warranty and not the manufacturer warranty.
