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 QOU270 Miniature Circuit Breakers (MCBs) 2P 70A 120/240V
MSRP $184.68Surplus $88.31Square D QOU270 Miniature Circuit Breakers (MCBs) 2P 70A 120/240V​ ARCA SKU: C15-6674 Brand: Square D MPN: QOU270 UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping...- SKU:
- C15-6674
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 70 A, 10 kA Interrupt, 2-Pole, 14 to 2 AWG Copper/Aluminum, Unit Mount, Slotted Box Lug Line/Load Terminal, Standard, Miniature Circuit Breaker
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Current Rating:
- 70 A
- Terminal Type:
- Slotted Box Lug Line/Load
- Size:
- 1.5 Inch Width x 2.95 Inch Depth x 4.45 Inch Height
- Type:
- Miniature, Standard
- Number of Poles:
- 2
- Wire Size:
- 14 to 2 AWG (Copper/Aluminum)
- Data Sheet:
- SchneiderElectric_21615_1_2_DATA.pdf
- Catalog:
- SchneiderElectric-SquareD_32357_7_19_7_21_CAT.pdf
- Interrupting Rating:
- 10 kA
- Installation/Operator:
- SchneiderElectric-SquareD_02171_INST.pdf
- Used On:
- OEM
- Mounting:
- DIN Rail/Unit/Surface/Flush
- CAD Drawings:
- SchneiderElectric_30266_1_CAD.pdf
- Series:
- QOU
MSRP $184.68Surplus $88.31 -
Square D QOU3100 Miniature Circuit Breakers (MCBs) EA
MSRP $416.00Surplus $196.97SKU: C15-10932 Brand: Square D MPN: QOU3100 UPC: 78590106033 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10932
- TS PIK:
- 111081748
- Series:
- QOU
- Short Description:
- 120/240 VAC 50/60 Hz, 60 VDC, 100 A, 10 kA Interrupt, 3-Pole, 12 to 2/0 AWG Copper/Aluminum, Unit Mount, Slotted Box Lug Line/Load Terminal, Standard, Miniature Circuit Breaker
- Size:
- 2.25 Inch Width x 2.95 Inch Depth x 4.45 Inch Height
- Interrupting Rating:
- 10 kA
- Current Rating:
- 100 A
- Number of Poles:
- 3
- Mounting:
- DIN Rail/Unit/Surface/Flush
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 60 VDC
- Terminal Type:
- Slotted Box Lug Line/Load
- Wire Size:
- 12 to 2/0 AWG (Copper/Aluminum)
- Type:
- Common Trip, Miniature, Standard
- Data Sheet:
- SchneiderElectric_21632_1_2_DATA.pdf
- Used On:
- OEM
- CAD Drawings:
- SchneiderElectric_30266_1_CAD.pdf
- Installation/Operator:
- SchneiderElectric-SquareD_02171_INST.pdf
- Catalog:
- SchneiderElectric-SquareD_32357_7_20_7_21_CAT.pdf
MSRP $416.00Surplus $196.97 -
Square D QOU320 Miniature Circuit Breakers (MCBs) EA
MSRP $308.00Surplus $143.76SKU: 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
MSRP $308.00Surplus $143.76 -
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Square D QOU330 Miniature Circuit Breakers (MCBs) QOU 3P 30A 240V 50/60Hz 3Ph EA
MSRP $340.00Surplus $162.25SKU: C15-4930 Brand: Square D MPN: QOU330 UPC: 78590141892 Shipping Weight: 1.15 lbs. Shipping Height: 4.00 In. Shipping Length: 5.00 In. Shipping Width: 3.00 In...- SKU:
- C15-4930
- Series:
- QOU
- Type:
- Miniature
- Type:
- Standard
- Approval:
- UL
- Approval:
- CSA
- Size:
- 2.25 Inch Width x 2.95 Inch Depth x 4.05 Inch Height
- Volts:
- 120/240 VAC 50/60 Hertz
- Volts:
- 48 VDC
- Amps:
- 32 A
- Used On:
- OEM
- Poles:
- 3
- Mounting:
- DIN Rail
- Interrupting Rating:
- 10 kA
- Terminal Type:
- Slotted Box Lug Line/Load
- Wire Size:
- 14 to 2 AWG (Copper/Aluminum)
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 30 A, 10 kA Interrupt, 3-Pole, 14 to 2 AWG Copper/Aluminum, Unit Mount, Slotted Box Lug Line/Load Terminal, Standard
- Catalog:
- SchneiderElectric-SquareD_32357_7_19_7_21_CAT.pdf
- Data Sheet:
- SchneiderElectric_21666_1_2_DATA.pdf
- Installation/Operator:
- SchneiderElectric-SquareD_02171_INST.pdf
- CAD Drawing:
- SchneiderElectric_30265_1_CAD.pdf
- Manufacturer Warranty:
- SchneiderElectric-SquareD_00002_WARR.pdf
- Current Rating:
- 30 A
- Number of Poles:
- 3
- CAD Drawings:
- SchneiderElectric_30265_1_CAD.pdf
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
MSRP $340.00Surplus $162.25 -
Square D QOU340 Miniature Circuit Breakers (MCBs) EA
MSRP $308.00Surplus $143.76SKU: C15-10934 Brand: Square D MPN: QOU340 UPC: 78590141895 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10934
- TS PIK:
- 111088455
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 40 A, 10 kA Interrupt, 3-Pole, 14 to 2 AWG Copper/Aluminum, Unit Mount, Slotted Box Lug Line/Load Terminal, Standard, Miniature Circuit Breaker
- Series:
- QOU
- Current Rating:
- 40 A
- Interrupting Rating:
- 10 kA
- Mounting:
- DIN Rail/Unit/Surface/Flush
- Terminal Type:
- Slotted Box Lug Line/Load
- Type:
- Miniature, Standard
- Size:
- 2.25 Inch Width x 2.95 Inch Depth x 4.05 Inch Height
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- CAD Drawings:
- SchneiderElectric_30265_1_CAD.pdf
- Used On:
- OEM
- Wire Size:
- 14 to 2 AWG (Copper/Aluminum)
- Catalog:
- SchneiderElectric-SquareD_32357_7_19_7_21_CAT.pdf
- Data Sheet:
- SchneiderElectric_21678_1_2_DATA.pdf
- Installation/Operator:
- SchneiderElectric-SquareD_02171_INST.pdf
- Number of Poles:
- 3
MSRP $308.00Surplus $143.76 -
Square D QOU350 Miniature Circuit Breakers (MCBs) EA
MSRP $308.00Surplus $143.76SKU: 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
MSRP $308.00Surplus $143.76 -
Square D QOU360 Miniature Circuit Breakers (MCBs)
MSRP $249.32Surplus $133.00Square D QOU360 Miniature Circuit Breakers (MCBs)​ ARCA SKU: C15-6683 Brand: Square D MPN: QOU360 UPC: 78590106029 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping...- SKU:
- C15-6683
- TS PIK:
- 111081744
- Current Rating:
- 60 A
- Size:
- 2.25 Inch Width x 2.95 Inch Depth x 4.05 Inch Height
- CAD Drawings:
- SchneiderElectric_30265_1_CAD.pdf
- Catalog:
- SchneiderElectric-SquareD_32357_7_19_7_21_CAT.pdf
- Used On:
- OEM
- Installation/Operator:
- SchneiderElectric-SquareD_02171_INST.pdf
- Number of Poles:
- 3
- Data Sheet:
- SchneiderElectric_21693_1_2_DATA.pdf
- Wire Size:
- 14 to 2 AWG (Copper/Aluminum)
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 60 A, 10 kA Interrupt, 3-Pole, 14 to 2 AWG Copper/Aluminum, Unit Mount, Slotted Box Lug Line/Load Terminal, Standard, Miniature Circuit Breaker
- Series:
- QOU
- Terminal Type:
- Slotted Box Lug Line/Load
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 48 VDC
- Mounting:
- DIN Rail/Unit/Surface/Flush
- Type:
- Miniature, Standard
- Interrupting Rating:
- 10 kA
MSRP $249.32Surplus $133.00 -
Square D QOU370 Miniature Circuit Breakers (MCBs) EA
MSRP $393.00Surplus $174.10SKU: C15-10937 Brand: Square D MPN: QOU370 UPC: 78590106030 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10937
- TS PIK:
- 111081745
- Current Rating:
- 70 A
- Number of Poles:
- 3
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 60 VDC
- Terminal Type:
- Slotted Box Lug Line/Load
- Type:
- Miniature, Standard
- Series:
- QOU
- Installation/Operator:
- SchneiderElectric-SquareD_02171_INST.pdf
- Used On:
- OEM
- CAD Drawings:
- SchneiderElectric_30266_1_CAD.pdf
- Size:
- 2.25 Inch Width x 2.95 Inch Depth x 4.05 Inch Height
- Catalog:
- SchneiderElectric-SquareD_32357_7_19_7_21_CAT.pdf
- Data Sheet:
- SchneiderElectric_21701_1_2_DATA.pdf
- Interrupting Rating:
- 10 kA
- Wire Size:
- 14 to 2 AWG (Copper/Aluminum)
- Short Description:
- 120/240 VAC 50/60 Hz, 60 VDC, 70 A, 10 kA Interrupt, 3-Pole, 14 to 2 AWG Copper/Aluminum, Unit Mount, Slotted Box Lug Line/Load Terminal, Standard, Miniature Circuit Breaker
- Mounting:
- DIN Rail/Unit/Surface/Flush
MSRP $393.00Surplus $174.10 -
Square D QOU380 Miniature Circuit Breakers (MCBs)
MSRP $450.00Surplus $204.45SKU: C15-10938 Brand: Square D MPN: QOU380 UPC: 78590106031 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10938
- TS PIK:
- 111081746
- Voltage Rating:
- 120/240 VAC 50/60 Hertz, 60 VDC
- Mounting:
- DIN Rail/Unit/Surface/Flush
- Short Description:
- 120/240 VAC 50/60 Hz, 60 VDC, 80 A, 10 kA Interrupt, 3-Pole, 12 to 2/0 AWG Copper/Aluminum, Unit Mount, Slotted Box Lug Line/Load Terminal, Standard, Miniature Circuit Breaker
- Type:
- Common Trip, Miniature, Standard
- Terminal Type:
- Slotted Box Lug Line/Load
- Series:
- QOU
- CAD Drawings:
- SchneiderElectric_30266_1_CAD.pdf
- Installation/Operator:
- SchneiderElectric-SquareD_02171_INST.pdf
- Current Rating:
- 80 A
- Catalog:
- SchneiderElectric-SquareD_32357_7_20_7_21_CAT.pdf
- Interrupting Rating:
- 10 kA
- Used On:
- OEM
- Data Sheet:
- SchneiderElectric_21707_1_2_DATA.pdf
- Wire Size:
- 12 to 2/0 AWG (Copper/Aluminum)
- Number of Poles:
- 3
- Size:
- 2.25 Inch Width x 2.95 Inch Depth x 4.45 Inch Height
MSRP $450.00Surplus $204.45 -
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Square D QOULFSC1 Circuit Breaker Accessories
MSRP $3.50Surplus $1.87Square D QOULFSC1 Circuit Breaker Accessories​ ARCA SKU: C15-3790 Brand: Square D MPN: QOULFSC1 UPC: 785901090410 Shipping Weight: 0.05 lbs. Shipping Height: 2.00 In. Shipping...- SKU:
- C15-3790
MSRP $3.50Surplus $1.87 -
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Square D RP6D16A120 Rating Plug
MSRP $380.00Surplus $171.00Square D RP6D16A120 Rating Plug​ ARCA SKU: A13-1308 Brand: Square D MPN: RP6D16A120 UPC: Shipping Weight: 0.10 lbs. Shipping Height: 2.00 In. Shipping Length: 3.00 In...- SKU:
- A13-1308
MSRP $380.00Surplus $171.00 -
Square D S29387 Circuit Breaker Accessories EA
MSRP $617.00Surplus $322.42SKU: C15-10944 Brand: Square D MPN: S29387 UPC: 78590154567 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10944
- TS PIK:
- 123706381
- Data Sheet:
- SchneiderElectric-SquareD_15650_1_DATA.pdf
- Catalog:
- SchneiderElectric-SquareD_00097_10_122_CAT.pdf
- Installation/Operator:
- SchneiderElectric-SquareD_00139_INST.pdf
- Used On:
- PowerPact H/J/L Frame Molded Case Circuit Breaker
- Type:
- Standard
- Short Description:
- 208 to 277 VAC, 50/60 Hz, 10 VA, 18 to 14 AWG Copper Wire Lead, Shunt Trip for PowerPact H/J/L Frame Molded Case Circuit Breaker
- Country of Origin:
- United States
- Approval:
- UL
MSRP $617.00Surplus $322.42 -
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Square D S29388 Circuit Breaker Accessories EA
MSRP $617.00Surplus $314.66SKU: C15-10945 Brand: Square D MPN: S29388 UPC: 78590158991 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10945
- TS PIK:
- 121233314
- Short Description:
- 380 to 480 VAC, 10 VA, 18 to 14 AWG Copper Wire Lead, Shunt Trip for PowerPact H/J/L Frame Molded Case Circuit Breaker
- Type:
- Standard
- Used On:
- PowerPact H/J/L Frame Molded Case Circuit Breaker
- Data Sheet:
- SchneiderElectric-SquareD_15651_1_DATA.pdf
- Installation/Operator:
- SchneiderElectric-SquareD_00139_INST.pdf
- Catalog:
- SchneiderElectric-SquareD_00097_10_122_CAT.pdf
- Country of Origin:
- United States
MSRP $617.00Surplus $314.66 -
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Square D S33661 Circuit Breaker Accessories
MSRP $645.00Surplus $405.78SKU: C15-10949 Brand: Square D MPN: S33661 UPC: 78590170042 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10949
- TS PIK:
- 120034515
MSRP $645.00Surplus $405.78 -
Square D S33670 Circuit Breaker Accessories EA
MSRP $645.00Surplus $398.25SKU: C15-10950 Brand: Square D MPN: S33670 UPC: 78590181658 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10950
- TS PIK:
- 124273954
- Series:
- 612, S
- Type:
- AC/DC
- Used On:
- Class 612 H/J/L Frame PowerPact Circuit Breaker
- Data Sheet:
- SchneiderElectric-SquareD_15665_1_2_DATA.pdf
- Catalog:
- SchneiderElectric-SquareD_03280_7_51_CAT.pdf
- Installation/Operator:
- SchneiderElectric-SquareD_00936_INST.pdf
- Short Description:
- 100 to 130 VAC, 125 VDC, UnderVage Trip for H/L/J Frame PowerPact Circuit Breaker
- Prop 65 Warning:
- Yes
- Country of Origin:
- United States
MSRP $645.00Surplus $398.25 -
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Square D SL250 Other Circuit Breakers
MSRP $435.00Surplus $156.60Square D SL250 Other Circuit Breakers​ ARCA SKU: C15-11425 Brand: Square D MPN: SL250 UPC: 78590170903 Shipping Weight: 6.05 lbs. Shipping Height: 6.00 In. Shipping...- SKU:
- C15-11425
- TS PIK:
- 121727639
- Short Description:
- 2-1/2", Silver Color, Steel, Sealing Locknut for IMC/Rigid Conduit Fitting (10 per Pack)
- CAD Drawings:
- ArlingtonIndustries_00537_1_CAD.pdf
- Type:
- Sealing
- Catalog:
- ArlingtonIndustries_00652_I8_CAT.pdf
MSRP $435.00Surplus $156.60 -
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Square D SL800M5 Circuit Breaker Accessories EA
MSRP $1,731.00Surplus $874.15SKU: C15-10973 Brand: Square D MPN: SL800M5 UPC: 78590174878 Shipping Weight: 10.25 lbs. Shipping Height: 6.00 In. Shipping Length: 11.00 In. Shipping Width: 10.00 In...- SKU:
- C15-10973
- TS PIK:
- 127401015
MSRP $1,731.00Surplus $874.15 -
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Square D SN225KA Circuit Breaker Accessories 225A 600V
MSRP $201.00Surplus $176.89Square D SN225KA Circuit Breaker Accessories 225A 600V​ ARCA SKU: C15-2198 Brand: Square D MPN: SN225KA UPC: 785901461050 Shipping Weight: 6.53 Shipping Height: 7.90 In. Shipping...- SKU:
- C15-2198
- Type:
- Main Lug
- Amps:
- 32 A
- Used On:
- NEMA 1/3R/4/4X/5/12 Circuit Breaker
- Enclosure:
- NEMA 3R
- Enclosure:
- Outdoor
- Enclosure:
- Rainproof
- Conductor Material:
- Aluminum/Copper
- Main Conductor Size:
- (1) 4 AWG to 300 KCMIL
- Ground Conductor Size:
- (2) 14 to 1/0 AWG
- Short Description:
- 225 A, (2) 14 to 1/0 AWG/(2) 4 AWG to 300 KCMIL Aluminum/Copper, Insulated Groundable
- Catalog:
- SchneiderElectric-SquareD_03280_7_85_7_87_7_88_CAT.pdf
- Data Sheet:
- Eaton_40735_1_DATA.pdf
- Installation/Operator:
- Eaton_00231_INST.pdf
- Manufacturer Warranty:
- Eaton_00010_WARR.pdf
- Prop 65 Warning:
- Yes
- Country of Origin:
- Mexico
MSRP $201.00Surplus $176.89 -
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Square D SN400LA Circuit Breaker Accessories
MSRP $216.36Surplus $119.11Square D SN400LA Circuit Breaker Accessories​ ARCA SKU: E30-10242 Brand: Square D MPN: SN400LA UPC: 78590149598 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping...- SKU:
- E30-10242
- TS PIK:
- 111089536
MSRP $216.36Surplus $119.11 -
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Square D WS363 Circuit Breaker Accessories EA
MSRP $299.00Surplus $206.71Square D WS363 Circuit Breaker Accessories EA​ ARCA SKU: C15-10975 Brand: Square D MPN: WS363 UPC: 785901357001 Shipping Weight: 5.10 lbs. Shipping Height: 4.00 In. Shipping...- SKU:
- C15-10975
- TS PIK:
- 121782494
MSRP $299.00Surplus $206.71
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