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
- Price
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Square D MGA36300 Molded Case Breakers (MCCBs)
MSRP $8,168.00Surplus $2,016.82SKU: C15-7746 Brand: Square D MPN: MGA36300 UPC: 78590149603 Shipping Weight: 28.90 lbs. Shipping Height: 11.00 In. Shipping Length: 18.00 In. Shipping Width: 12.00...- SKU:
- C15-7746
- TS PIK:
- 21333608
MSRP $8,168.00Surplus $2,016.82 -
Square D MGA36400 Molded Case Breakers (MCCBs)
MSRP $8,168.00Surplus $5,921.16SKU: C15-7792 Brand: Square D MPN: MGA36400 UPC: 78590149614 Shipping Weight: 29.00 lbs. Shipping Height: 11.00 In. Shipping Length: 18.00 In. Shipping Width: 12.00...- SKU:
- C15-7792
- TS PIK:
- 21333627
- Data Sheet:
- SchneiderElectric-SquareD_70424_1-3_DATA.pdf
- Catalog:
- SchneiderElectric-SquareD_32357_9_62_CAT.pdf
- Current Rating:
- 400 A
- Short Description:
- 600 VAC 50/60 Hz, 400 A, 18 kA, 3-Pole, M-Frame, CBA Phase, Line Lug Load Terminal, Thermal Magnetic, Basic Electronic, ET 1.0, Panelboard Molded Case Circuit Breaker
- Type:
- Thermal Magnetic, Basic Electronic ET 1.0
- Number of Poles:
- 3
- Voltage Rating:
- 600 VAC 50/60 Hertz
- Series:
- MG
- Interrupting Rating:
- 18 kA at 600 VAC
- CAD Drawings:
- SchneiderElectric_30057_1_CAD.pdf
MSRP $8,168.00Surplus $5,921.16 -
Square D MGA36700 Molded Case Breakers (MCCBs) EA
MSRP $10,608.00Surplus $5,435.51SKU: C15-10829 Brand: Square D MPN: MGA36700 UPC: 78590150751 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10829
- TS PIK:
- 120836497
- Interrupting Rating:
- 65 kA at 240 VAC, 35 kA at 480 VAC, 18 kA at 600 VAC
- Number of Poles:
- 3
- Catalog:
- SchneiderElectric-SquareD_32357_7_31_CAT.pdf
- Series:
- MG
- Type:
- Thermal Magnetic, Basic Electronic ET 1.0
- Short Description:
- 600 VAC 50/60 Hz, 700 A, 65 kA, 3-Pole, M-Frame, ABC Phase, Line Lug Load Terminal, Thermal Magnetic, Basic Electronic, ET 1.0, Panelboard Molded Case Circuit Breaker
- CAD Drawings:
- SchneiderElectric_30065_1_CAD.pdf
- Prop 65 Warning:
- Yes
- Voltage Rating:
- 600 VAC 50/60 Hertz
- Current Rating:
- 700 A
- Data Sheet:
- SchneiderElectric-SquareD_70428_1_2_DATA.pdf
- Country of Origin:
- United States
MSRP $10,608.00Surplus $5,435.51 -
Square D MGA36800 Molded Case Breakers (MCCBs)
MSRP $10,608.00Surplus $6,208.44SKU: C15-7230 Brand: Square D MPN: MGA36800 UPC: 78590149679 Shipping Weight: 26.40 lbs. Shipping Height: 9.00 In. Shipping Length: 18.00 In. Shipping Width: 12.00 In...- SKU:
- C15-7230
- TS PIK:
- 120071551
- CAD Drawings:
- SchneiderElectric_30067_1_CAD.pdf
- Data Sheet:
- SchneiderElectric-SquareD_70429_1_2_DATA.pdf
- Catalog:
- SchneiderElectric-SquareD_32357_7_31_CAT.pdf
- Type:
- Thermal Magnetic, Basic Electronic ET 1.0
- Current Rating:
- 800 A
- Interrupting Rating:
- 65 kA at 240 VAC, 35 kA at 480 VAC, 18 kA at 600 VAC
- Number of Poles:
- 3
- Series:
- MG
- Voltage Rating:
- 600 VAC 50/60 Hertz
- Short Description:
- 600 VAC 50/60 Hz, 800 A, 65 kA, 3-Pole, M-Frame, ABC Phase, Line Lug Load Terminal, Thermal Magnetic, Basic Electronic, ET 1.0, Panelboard Molded Case Circuit Breaker
- Prop 65 Warning:
- Yes
- Country of Origin:
- United States
MSRP $10,608.00Surplus $6,208.44 -
Square D MGL36400 Molded Case Breakers (MCCBs)
MSRP $7,560.00Surplus $6,434.54SKU: C15-7771 Brand: Square D MPN: MGL36400 UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In. Product...- SKU:
- C15-7771
MSRP $7,560.00Surplus $6,434.54 -
Square D MGL36500 Molded Case Breakers (MCCBs)
MSRP $7,560.00Surplus $6,434.54SKU: C15-7227 Brand: Square D MPN: MGL36500 UPC: 78590166164 Shipping Weight: 28.95 lbs. Shipping Height: 11.00 In. Shipping Length: 18.00 In. Shipping Width: 13.00...- SKU:
- C15-7227
- TS PIK:
- 120071919
- Series:
- 612, MGL
- Interrupting Rating:
- 65 kA at 240 VAC, 35 kA at 480 VAC, 18 kA at 600 VAC
- CAD Drawings:
- SchneiderElectric-SquareD_17791_1_CAD.pdf
- Catalog:
- SchneiderElectric-SquareD_03280_7_40_CAT.pdf
- Short Description:
- 600 VAC 50/60 Hz, 500 A, 18 kA Interrupt, 3-Pole, M-Frame, Line/Load Lug Terminal, Unit Mount, Electronic Trip, Molded Case Circuit Breaker
- Voltage Rating:
- 240/480/600 VAC at 50/60 Hz, 480 VAC Star/277 VAC at 50/60 Hz, 600 VAC Star/347 VAC at 50/60 Hz (UL/CSA/NOM)
- Current Rating:
- 500 A
- Number of Poles:
- 3
- Data Sheet:
- SchneiderElectric-SquareD_14188_1-3_DATA.pdf
- Frame Type:
- M
- Type:
- Molded Case, Thermal Magnetic
- Terminal Type:
- Line Lug, Load Lug
- Installation/Operator:
- SchneiderElectric-SquareD_00524_INST.pdf
- Size:
- 8.27 Inch W x 8.05 Inch D x 12.86 Inch H
- Prop 65 Warning:
- Yes
- Country of Origin:
- United States
MSRP $7,560.00Surplus $6,434.54 -
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Square D MGP36500 Molded Case Breakers (MCCBs)
MSRP $11,340.00Surplus $4,017.50SKU: C15-7226 Brand: Square D MPN: MGP36500 UPC: 78590145521 Shipping Weight: 23.00 lbs. Shipping Height: 11.00 In. Shipping Length: 18.00 In. Shipping Width: 12.00...- SKU:
- C15-7226
- TS PIK:
- 120071918
- Short Description:
- 600 VAC 50/60 Hz, 500 A, 18 kA, 3-Pole, M-Frame, Unit Mount, Load Lug/Line Nut Terminal, Thermal Magnetic, Basic Electronic ET 1, Molded Case Circuit Breaker
- Series:
- MG
- Number of Poles:
- 3
- Voltage Rating:
- 600 VAC 50/60 Hertz
- Interrupting Rating:
- 18 kA at 600 VAC
- Current Rating:
- 500 A
- Catalog:
- SchneiderElectric-SquareD_32357_7_31_CAT.pdf
- Type:
- Thermal Magnetic, Basic Electronic ET 1
- Maximum AC Voltage Rating:
- 600 V
- CAD Drawings:
- SchneiderElectric_30084_1_CAD.pdf
- Terminal Type:
- Load Lug, Line Nut
- Size:
- 8.27 Inch Width x 8.05 Inch Depth x 12.86 Inch Height
- Data Sheet:
- SchneiderElectric_20245_1_2_DATA.pdf
- Frame Type:
- M
MSRP $11,340.00Surplus $4,017.50 -
Square D MGP36600 Molded Case Breakers (MCCBs)
MSRP $7,560.00Surplus $2,541.95SKU: C15-7228 Brand: Square D MPN: MGP36600 UPC: 78590156353 Shipping Weight: 28.35 lbs. Shipping Height: 11.00 In. Shipping Length: 18.00 In. Shipping Width: 12.00...- SKU:
- C15-7228
- TS PIK:
- 122847022
- Current Rating:
- 600 A
- Series:
- MG
- Interrupting Rating:
- 18 kA at 600 VAC
- Short Description:
- 600 VAC 50/60 Hz, 600 A, 18 kA, 3-Pole, M-Frame, ABC Phase, Unit Mount, Nut Line Lug Load Terminal, Basic Electronic, ET 1.0, Panelboard Molded Case Circuit Breaker
- Voltage Rating:
- 600 VAC 50/60 Hertz
- CAD Drawings:
- SchneiderElectric-SquareD_74689_1_CAD.pdf
- Number of Poles:
- 3
- Catalog:
- SchneiderElectric-SquareD_32357_9_50_CAT.pdf
- Data Sheet:
- SchneiderElectric-SquareD_70435_1-3_DATA.pdf
- Type:
- Basic Electronic ET 1.0
- Prop 65 Warning:
- Yes
MSRP $7,560.00Surplus $2,541.95 -
Square D MGP36800 Molded Case Breakers (MCCBs)
MSRP $14,955.00Surplus $3,806.06SKU: C15-11964 Brand: Square D MPN: MGP36800 UPC: 78590150249 Shipping Weight: 24.85 lbs. Shipping Height: 9.00 In. Shipping Length: 13.00 In. Shipping Width: 9.00 In...- SKU:
- C15-11964
- TS PIK:
- 120730370
- Short Description:
- 600 VAC 50/60 Hz, 800 A, 18 kA, 3-Pole, M-Frame, ABC Phase, Unit Mount, Nut Line Lug Load Terminal, Basic Electronic, ET 1.0, Panelboard Molded Case Circuit Breaker
- Prop 65 Warning:
- Yes
- Series:
- MG
- Number of Poles:
- 3
- Current Rating:
- 800 A
- Interrupting Rating:
- 18 kA at 600 VAC
- Voltage Rating:
- 600 VAC 50/60 Hertz
- Approval:
- UL, CSA, CE
- Type:
- Basic Electronic ET 1.0
- Data Sheet:
- SchneiderElectric-SquareD_70436_1-3_DATA.pdf
- Used On:
- I-Line Merchandised Panelboard
- Catalog:
- SchneiderElectric-SquareD_32357_9_50_CAT.pdf
- Installation:
- Unit Mount
- CAD Drawings:
- SchneiderElectric_30084_1_CAD.pdf
- Trip Setting:
- 1600 to 8000 A
MSRP $14,955.00Surplus $3,806.06 -
Square D MJA36700 Molded Case Breakers (MCCBs) EA
MSRP $12,630.00Surplus $7,155.00SKU: C15-10833 Brand: Square D MPN: MJA36700 UPC: 78590186200 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10833
- TS PIK:
- 120732181
- Series:
- MJ
- Current Rating:
- 700 A
- Catalog:
- SchneiderElectric-SquareD_32357_7_31_CAT.pdf
- CAD Drawings:
- SchneiderElectric_30165_1_CAD.pdf
- Type:
- Thermal Magnetic, Basic Electronic ET 1.0
- Number of Poles:
- 3
- Voltage Rating:
- 600 VAC 50/60 Hertz
- Data Sheet:
- SchneiderElectric-SquareD_70445_1_2_DATA.pdf
- Short Description:
- 600 VAC 50/60 Hz, 700 A, 100 kA, 3-Pole, M-Frame, ABC Phase, Line Lug Load Terminal, Thermal Magnetic, Basic Electronic, ET 1.0, Panelboard Molded Case Circuit Breaker
- Interrupting Rating:
- 100 kA at 240 VAC, 65 kA at 480 VAC, 25 kA at 600 VAC
- Prop 65 Warning:
- Yes
- Country of Origin:
- Mexico
MSRP $12,630.00Surplus $7,155.00 -
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Square D MX36400G Molded Case Breakers (MCCBs) MX 3P 400A 600V 50/60Hz 3Ph
MSRP $16,356.97Surplus $3,393.57SKU: C15-2466 Brand: Square D MPN: MX36400G UPC: Shipping Weight: 35.85 lbs. Shipping Height: 7.00 In. Shipping Length: 15.00 In. Shipping Width: 9.00 In. Product...- SKU:
- C15-2466
- Voltage Rating:
- 600 V
- Current Rating:
- 400 A
- Number of Poles:
- 3
- Interrupting Rating:
- 10kA at 240VAC
- Short Description:
- Square D MX 3P 400A 600V 50/60Hz 3Ph
MSRP $16,356.97Surplus $3,393.57 -
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Square D MX36800G Molded Case Breakers (MCCBs) MX 3P 800A 600V 50/60Hz 3Ph
MSRP $21,646.63Surplus $6,552.23SKU: C15-2465 Brand: Square D MPN: MX36800G UPC: Shipping Weight: 35.85 lbs. Shipping Height: 7.00 In. Shipping Length: 15.00 In. Shipping Width: 9.00 In. Product...- SKU:
- C15-2465
- Approval:
- UL
- Approval:
- CSA
- Approval:
- IEC
- Amps:
- 800 A
- Installation:
- Plug-On
- Interrupting Rating:
- 65 Kiloamp at 240/480 Volt AC
- Interrupting Rating:
- 25 Kiloamp at 600 Volt AC (UL/CSA)
- Interrupting Rating:
- 33/65 Kiloamp at 415/240 Volt AC (IEC)
- Poles:
- 3
- Trip Setting:
- 800 Amp
- Type:
- Molded Case
- Type:
- Electronic Trip
- Type:
- Main
- Type:
- Standard Function
- Used On:
- I-Line Panelboard and Switchboard
- Volts:
- 600 VAC
- Short Description:
- 600 VAC, 800A, 25/65 kA, 3-Pole, I-LINE Connection, Molded Case Circuit Breaker with MICROLOGIC Standard-Function Trip System
- Series:
- MX
- Data Sheet:
- ATTA ...
MSRP $21,646.63Surplus $6,552.23 -
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Square D N100MFI Circuit Breaker Accessories EA
MSRP $1,090.00Surplus $466.61SKU: C15-5060 Brand: Square D MPN: N100MFI UPC: Shipping Weight: 9.50 lbs. Shipping Height: 2.00 In. Shipping Length: 26.00 In. Shipping Width: 17.00 In. Product...- SKU:
- C15-5060
- UOM:
- EA
- Box Quantity:
- 1
MSRP $1,090.00Surplus $466.61 -
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Square D N3250KAMB Other Circuit Breakers
MSRP $96.86Surplus $20.99SKU: C15-11560 Brand: Square D MPN: N3250KAMB UPC: Shipping Weight: 19.85 lbs. Shipping Height: 14.00 In. Shipping Length: 25.00 In. Shipping Width: 7.00 In...- SKU:
- C15-11560
- Number of Poles:
- 3
- Voltage Rating:
- 480 VAC Star/277 VAC
- Data Sheet:
- SQAREDE85050_1.pdf
- Type:
- Main
- Current Rating:
- 250 A
- Short Description:
- 480 VAC Star 277 VAC, 250 A, 3-Pole, Panelboard Main Breaker Kit,
- Catalog:
- SQAREDE62281_3.pdf
MSRP $96.86Surplus $20.99 -
Square D NC361000 Molded Case Breakers (MCCBs)
MSRP $37,850.00Surplus $7,280.97SKU: C15-7242 Brand: Square D MPN: NC361000 UPC: Shipping Weight: 63.10 lbs. Shipping Height: 11.00 In. Shipping Length: 17.00 In. Shipping Width: 17.00 In. Product...- SKU:
- C15-7242
- Voltage Rating:
- 600 VAC
- Interrupting Rating:
- 100 kA at 480 VAC
- Current Rating:
- 1000 A
- Series:
- 670/671, NC
- Number of Poles:
- 3
- Type:
- Molded Case, Magnetic Trip
- Catalog:
- SchneiderElectric-SquareD_00096_90_91_CAT.pdf
- Short Description:
- 600 VAC, 250 VDC, 1000 A, 25 kA, 3-Pole, N-Frame, I-Line Mount, Thermal Magnetic, Molded Case Circuit Breaker
MSRP $37,850.00Surplus $7,280.97 -
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Square D NF600SFBH Circuit Breaker Accessories EA
MSRP $1,290.00Surplus $455.83SKU: L19-5487 Brand: Square D MPN: NF600SFBH UPC: 785901834649 Shipping Weight: 14.10 lbs. Shipping Height: 8.00 In. Shipping Length: 26.00 In. Shipping Width: 14.00...- SKU:
- L19-5487
- TS PIK:
- 123708245
MSRP $1,290.00Surplus $455.83 -
Square D NLJD36400U33XHJ00 Miniature Circuit Breakers (MCBs)
MSRP $6,000.00Surplus $2,767.50SKU: U00-10515 Brand: Square D MPN: NLJD36400U33XHJ00 UPC: Shipping Weight: 15.80 lbs. Shipping Height: 6.00 In. Shipping Length: 13.00 In. Shipping Width: 9.00 In...- SKU:
- U00-10515
MSRP $6,000.00Surplus $2,767.50 -
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Square D NXF361200G Molded Case Breakers (MCCBs)
MSRP $15,176.13Surplus $5,463.40SKU: C15-7731 Brand: Square D MPN: NXF361200G UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In. Product...- SKU:
- C15-7731
MSRP $15,176.13Surplus $5,463.40 -
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Square D O2100 Miniature Circuit Breakers (MCBs) 2P 100A
MSRP $192.23Surplus $69.20Square D O2100 Miniature Circuit Breakers (MCBs) 2P 100A​ ARCA SKU: C15-6566 Brand: Square D MPN: O2100 UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping...- SKU:
- C15-6566
MSRP $192.23Surplus $69.20 -
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Square D O330 Q Miniature Circuit Breakers (MCBs) 3P 30A
MSRP $229.33Surplus $82.56Square D O330 Q Miniature Circuit Breakers (MCBs) 3P 30A​ ARCA SKU: C15-6489 Brand: Square D MPN: O330 Q UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping...- SKU:
- C15-6489
MSRP $229.33Surplus $82.56
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.
