Circuit Breakers
Circuit Breakers - Source rare and hard-to-find breakers with ease
At ARCA Supply, we know that circuit breakers are essential to safeguarding electrical systems, protecting them from overloads and short circuits. Whether you're managing a commercial facility, maintaining industrial equipment, or working on residential projects, having the right circuit breakers ensures uninterrupted performance and peace of mind.
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.
Explore Our Circuit Breaker Categories:
- Air Circuit Breakers (ACBs): Ideal for large-scale industrial applications, ACBs provide superior protection in high-current scenarios.
- Din Rail Mounted Circuit Breakers: These breakers are designed for quick installation in compact spaces, making them perfect for modular setups.
- Main Breakers: As a crucial part of any electrical system, main breakers ensure that circuits are effectively managed and protected from faults.
- Miniature Circuit Breakers (MCBs): Designed for residential and commercial use, MCBs are essential for protecting lower power circuits from damage.
- Molded Case Breakers (MCCBs): When high current protection is needed, MCCBs offer robust and durable performance.
- Motor Circuit Protectors (MCPs): Specifically engineered to protect motors, MCPs offer fast response times to prevent equipment damage.
- Circuit Breaker Accessories: From trip units to mounting kits, we stock a variety of accessories to enhance the functionality of your breakers.
Leading Brands We Carry:
At ARCA Supply, we carry a comprehensive lineup of top brands to ensure you get the best quality and reliability. Our inventory includes trusted names such as Eaton, Square D, Siemens, and General Electric. With over 2,600 Eaton products and hundreds from brands like ABB, Schneider Electric, and Leviton, you can be confident in finding exactly what you need.
Choose the Right Circuit Breaker:
When selecting a circuit breaker, factors such as current rating, voltage rating, and mounting style are critical. Our range includes options for:
- Current Ratings: From 15A to 600A, ensuring the right protection for every application.
- Voltage Ratings: With options ranging from 120V to 600V for both AC and DC applications.
- Mounting Types: Choose from plug-on, DIN rail, or bolt-on mountings to match your installation requirements.
Why Choose ARCA Supply?
As a trusted distributor specializing in hard-to-find electrical components, we ensure that our circuit breakers meet the highest industry standards. Our commitment to the circular economy also means that unsold products are responsibly recycled, helping to reduce waste while supporting your projects.
Explore our extensive collection of circuit breakers today and find the perfect solution for your electrical system’s needs.
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Air Circuit Breakers (ACBs)
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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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Circuit Breaker Accessories
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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Square D KA36110 Molded Case Breakers (MCCBs)
MSRP $2,595.00Surplus $710.90SKU: C15-7108 Brand: Square D MPN: KA36110 UPC: Shipping Weight: 8.25 lbs. Shipping Height: 9.00 In. Shipping Length: 13.00 In. Shipping Width: 6.00 In. Product...- SKU:
- C15-7108
MSRP $2,595.00Surplus $710.90 -
Square D KA36250 Molded Case Breakers (MCCBs) EA
MSRP $5,500.00Surplus $1,136.87SKU: C15-7082 Brand: Square D MPN: KA36250 UPC: Shipping Weight: 8.60 lbs. Shipping Height: 6.00 In. Shipping Length: 15.00 In. Shipping Width: 9.00 In. Product...- SKU:
- C15-7082
- Size:
- 4.5 Inch Width x 4.75 Inch Depth x 8 Inch Height
- Type:
- Molded Case, Thermal Magnetic, Adjustable
- Number of Poles:
- 3
- Interrupting Rating:
- 42 kA at 240 VAC, 25 kA at 480 VAC, 22 kA at 600 VAC
- Current Rating:
- 250 A
- Data Sheet:
- SchneiderElectric-SquareD_04818_1_DATA.pdf
- Short Description:
- 600 VAC, 250 VDC, 250 A, 22 kA, 3-Pole, K-Frame, I-Line Mount, Thermal Magnetic, Molded Case Circuit Breaker
- Voltage Rating:
- 600 VAC, 250 VDC
- Catalog:
- SchneiderElectric-SquareD_00935_11_12_11_13_CAT.pdf
- Series:
- kA
- Frame Type:
- K
- Approval:
- UL
MSRP $5,500.00Surplus $1,136.87 -
Square D KAL26125 Other Circuit Breakers
MSRP $2,000.00Surplus $738.28SKU: C15-7083 Brand: Square D MPN: KAL26125 UPC: Shipping Weight: 5.45 lbs. Shipping Height: 5.00 In. Shipping Length: 9.00 In. Shipping Width: 7.00 In. Product...- SKU:
- C15-7083
- Frame Type:
- K
- Current Rating:
- 125 A
- Voltage Rating:
- 600 VAC, 250 VDC
- Interrupting Rating:
- 42 kA at 240 VAC, 25 kA at 480 VAC, 22 kA at 600 VAC, 10 kA at 125/250 VDC
- Terminal Type:
- Lug
- Number of Poles:
- 2
- Type:
- Thermal Magnetic
- Short Description:
- 600 VAC, 250 VDC, 125 A, 22 kA, 2-Pole, K-Frame, Individually Mount, Thermal Magnetic, Molded Case Circuit Breaker
- Series:
- 655/825/660, kAL
- Size:
- 4.5 Inch Width x 4.75 Inch Depth x 8 Inch Height
- Catalog:
- SchneiderElectric-SquareD_00935_11_12_11_13_CAT.pdf
MSRP $2,000.00Surplus $738.28 -
Square D KAL36110 Molded Case Breakers (MCCBs)
MSRP $4,500.00Surplus $966.66SKU: C15-7090 Brand: Square D MPN: KAL36110 UPC: Shipping Weight: 7.45 lbs. Shipping Height: 6.00 In. Shipping Length: 15.00 In. Shipping Width: 9.00 In. Product...- SKU:
- C15-7090
MSRP $4,500.00Surplus $966.66 -
Square D KAL361251380 Molded Case Breakers (MCCBs)
MSRP $5,400.00Surplus $1,186.62SKU: C15-7092 Brand: Square D MPN: KAL361251380 UPC: Shipping Weight: 6.85 lbs. Shipping Height: 4.00 In. Shipping Length: 8.00 In. Shipping Width: 6.00 In. Product...- SKU:
- C15-7092
MSRP $5,400.00Surplus $1,186.62 -
Square D KAP36225 Molded Case Breakers (MCCBs) EA
MSRP $2,000.00Surplus $780.28SKU: C15-10960 Brand: Square D MPN: KAP36225 UPC: 785901425540 Shipping Weight: 7.10 lbs. Shipping Height: 9.00 In. Shipping Length: 13.00 In. Shipping Width: 6.00 In...- SKU:
- C15-10960
- Current Rating:
- 225 A
- Voltage Rating:
- 600 VAC, 250 VDC
- Frame Type:
- K
- Terminal Type:
- OFF End Lug
- Short Description:
- 225 A, 3-Pole, K-Frame, Thermal Magnetic, Molded Case Circuit Breaker
- Interrupting Rating:
- 42 kA at 240 VAC, 25 kA at 480 VAC, 22 kA at 600 VAC, 10 kA at 125/250 VDC
- Catalog:
- SchneiderElectric-SquareD_03394_91_92_CAT.pdf
- Series:
- 601, kAP
- Number of Poles:
- 3
- Type:
- Thermal Magnetic
MSRP $2,000.00Surplus $780.28 -
Square D KC34250 Molded Case Breakers (MCCBs)
MSRP $20,000.00Surplus $2,048.32SKU: C15-7094 Brand: Square D MPN: KC34250 UPC: Shipping Weight: 9.05 lbs. Shipping Height: 6.00 In. Shipping Length: 11.00 In. Shipping Width: 5.00 In. Product...- SKU:
- C15-7094
- Series:
- 655/825/660, KC
- Voltage Rating:
- 600 VAC, 250 VDC
- Current Rating:
- 250 A
- Short Description:
- 600 VAC, 250 VDC, 250 A, 3-Pole, K-Frame, I-Line Mount, Thermal Magnetic, Molded Case Circuit Breaker
- Interrupting Rating:
- 100 kA at 240 VAC, 65 kA at 480 VAC
- Catalog:
- SchneiderElectric-SquareD_00935_11_12_11_13_CAT.pdf
- Type:
- Molded Case, Thermal Magnetic, Main
- Number of Poles:
- 3
MSRP $20,000.00Surplus $2,048.32 -
Square D KCL34110-1021 Molded Case Breakers (MCCBs)
MSRP $6,420.00Surplus $1,840.65SKU: C15-7096 Brand: Square D MPN: KCL34110-1021 UPC: Shipping Weight: 7.85 lbs. Shipping Height: 5.00 In. Shipping Length: 8.00 In. Shipping Width: 5.00 In...- SKU:
- C15-7096
MSRP $6,420.00Surplus $1,840.65 -
Square D KCP34175MT Molded Case Breakers (MCCBs)
MSRP $9,200.00Surplus $1,869.74SKU: C15-7098 Brand: Square D MPN: KCP34175MT UPC: Shipping Weight: 7.35 lbs. Shipping Height: 4.00 In. Shipping Length: 8.00 In. Shipping Width: 5.00 In. Product...- SKU:
- C15-7098
MSRP $9,200.00Surplus $1,869.74 -
Square D KHL36125 Molded Case Breakers (MCCBs)
MSRP $6,000.00Surplus $1,320.68SKU: C15-7085 Brand: Square D MPN: KHL36125 UPC: Shipping Weight: 7.50 lbs. Shipping Height: 9.00 In. Shipping Length: 13.00 In. Shipping Width: 6.00 In. Product...- SKU:
- C15-7085
- Size:
- 4.5 Inch Width x 4.75 Inch Depth x 8 Inch Height
- Type:
- Thermal Magnetic
- Interrupting Rating:
- 65 kA at 240 VAC, 35 kA at 480 VAC, 25 kA at 600 VAC, 50 kA at 125/250 VDC
- Number of Poles:
- 3
- Current Rating:
- 125 A
- Catalog:
- SchneiderElectric-SquareD_00935_11_12_11_13_CAT.pdf
- Terminal Type:
- Lug
- Short Description:
- 600 VAC, 250 VDC, 125 A, 25 kA, 3-Pole, K-Frame, Individually Mount, Thermal Magnetic, Molded Case Circuit Breaker
- Frame Type:
- K
- Series:
- 655/825/660, KHL
- Voltage Rating:
- 600 VAC, 250 VDC
MSRP $6,000.00Surplus $1,320.68 -
Square D KHL361251021 Molded Case Breakers (MCCBs)
MSRP $6,000.00Surplus $1,366.83SKU: C15-7086 Brand: Square D MPN: KHL361251021 UPC: Shipping Weight: 6.25 lbs. Shipping Height: 5.00 In. Shipping Length: 8.00 In. Shipping Width: 5.00 In. Product...- SKU:
- C15-7086
MSRP $6,000.00Surplus $1,366.83 -
Square D KHL36150 Molded Case Breakers (MCCBs)
MSRP $6,000.00Surplus $949.10SKU: C15-7087 Brand: Square D MPN: KHL36150 UPC: Shipping Weight: 7.45 lbs. Shipping Height: 9.00 In. Shipping Length: 13.00 In. Shipping Width: 6.00 In. Product...- SKU:
- C15-7087
- Current Rating:
- 150 A
- Series:
- 655/825/660, KHL
- Number of Poles:
- 3
- Voltage Rating:
- 600 VAC, 250 VDC
- Type:
- Thermal Magnetic
- Size:
- 4.5 Inch Width x 4.75 Inch Depth x 8 Inch Height
- Catalog:
- SchneiderElectric-SquareD_00935_11_12_11_13_CAT.pdf
- Terminal Type:
- Lug
- Interrupting Rating:
- 65 kA at 240 VAC, 35 kA at 480 VAC, 25 kA at 600 VAC, 50 kA at 125/250 VDC
- Frame Type:
- K
- Short Description:
- 600 VAC, 250 VDC, 150 A, 25 kA, 3-Pole, K-Frame, Individually Mount, Thermal Magnetic, Molded Case Circuit Breaker
MSRP $6,000.00Surplus $949.10 -
Square D KHL36225 Molded Case Breakers (MCCBs)
MSRP $7,000.00Surplus $862.13SKU: C15-7089 Brand: Square D MPN: KHL36225 UPC: Shipping Weight: 7.25 lbs. Shipping Height: 9.00 In. Shipping Length: 13.00 In. Shipping Width: 6.00 In. Product...- SKU:
- C15-7089
- Series:
- 655/825/660, KHL
- Short Description:
- 600 VAC, 250 VDC, 225 A, 25 kA, 3-Pole, K-Frame, Individually Mount, Thermal Magnetic, Molded Case Circuit Breaker
- Terminal Type:
- Lug
- Frame Type:
- K
- Data Sheet:
- SchneiderElectric-SquareD_04820_1_DATA.pdf
- Type:
- Thermal Magnetic
- Current Rating:
- 225 A
- Size:
- 4.5 Inch Width x 4.75 Inch Depth x 8 Inch Height
- Number of Poles:
- 3
- Voltage Rating:
- 600 VAC, 250 VDC
- Interrupting Rating:
- 65 kA at 240 VAC, 35 kA at 480 VAC, 25 kA at 600 VAC, 50 kA at 125/250 VDC
- Catalog:
- SchneiderElectric-SquareD_00935_11_12_11_13_CAT.pdf
- Prop 65 Warning:
- Yes
MSRP $7,000.00Surplus $862.13 -
Square D KHL36250 Molded Case Breakers (MCCBs)
MSRP $9,250.00Surplus $1,387.57SKU: C15-7091 Brand: Square D MPN: KHL36250 UPC: Shipping Weight: 7.45 lbs. Shipping Height: 9.00 In. Shipping Length: 13.00 In. Shipping Width: 6.00 In. Product...- SKU:
- C15-7091
MSRP $9,250.00Surplus $1,387.57 -
Square D KI36125 Molded Case Breakers (MCCBs)
MSRP $1,450.00Surplus $1,397.30SKU: C15-7099 Brand: Square D MPN: KI36125 UPC: Shipping Weight: 9.10 lbs. Shipping Height: 6.00 In. Shipping Length: 11.00 In. Shipping Width: 5.00 In. Product...- SKU:
- C15-7099
MSRP $1,450.00Surplus $1,397.30 -
Square D LA26300AC Molded Case Breakers (MCCBs)
MSRP $4,053.00Surplus $933.92SKU: C15-7783 Brand: Square D MPN: LA26300AC UPC: 78590100977 Shipping Weight: 15.95 lbs. Shipping Height: 10.00 In. Shipping Length: 18.00 In. Shipping Width: 7.00...- SKU:
- C15-7783
- TS PIK:
- 21332654
- Voltage Rating:
- 600 VAC, 250 VDC
- Current Rating:
- 300 A
- Number of Poles:
- 2
- Interrupting Rating:
- 22 kA at 600 VAC
- Short Description:
- 600 VAC, 250 VDC, 300 A, 22 kA, 2-Pole, L-Frame, AC Phase, Line Lug Load Terminal, Thermal Magnetic, Panelboard Molded Case Circuit Breaker
- Series:
- LA
- Type:
- Thermal Magnetic
- Data Sheet:
- SchneiderElectric-SquareD_47503_1_2_DATA.pdf
- Catalog:
- SchneiderElectric-SquareD_32357_9_61_CAT.pdf
- Prop 65 Warning:
- Yes
- Country of Origin:
- Mexico
MSRP $4,053.00Surplus $933.92 -
Square D LA36300 Molded Case Breakers (MCCBs) EA
MSRP $5,000.00Surplus $1,210.94SKU: C15-8642 Brand: Square D MPN: LA36300 UPC: 78590142624 Shipping Weight: 18.25 lbs. Shipping Height: 10.00 In. Shipping Length: 18.00 In. Shipping Width: 13.00 In...- SKU:
- C15-8642
- TS PIK:
- 111088563
- Current Rating:
- 300 A
- Voltage Rating:
- 600 VAC, 250 VDC
- Short Description:
- 600 VAC, 250 VDC, 300 A, 22 kA, 3-Pole, L-Frame, ABC Phase, Line Lug Load Terminal, Thermal Magnetic, Panelboard Molded Case Circuit Breaker
- Series:
- LA
- Interrupting Rating:
- 22 kA at 600 VAC
- Catalog:
- SchneiderElectric-SquareD_32357_9_61_CAT.pdf
- Type:
- Thermal Magnetic
- Data Sheet:
- SchneiderElectric-SquareD_47513_1_2_DATA.pdf
- Number of Poles:
- 3
- Prop 65 Warning:
- Yes
- Country of Origin:
- United States
MSRP $5,000.00Surplus $1,210.94 -
Square D LA36350 Molded Case Breakers (MCCBs)
MSRP $4,944.00Surplus $1,118.49SKU: C15-7768 Brand: Square D MPN: LA36350 UPC: 78590142628 Shipping Weight: 16.45 lbs. Shipping Height: 9.00 In. Shipping Length: 13.00 In. Shipping Width: 13.00 In...- SKU:
- C15-7768
- TS PIK:
- 21332006
- Short Description:
- 600 VAC, 250 VDC, 350 A, 22 kA, 3-Pole, L-Frame, ABC Phase, Line Lug Load Terminal, Thermal Magnetic, Panelboard Molded Case Circuit Breaker
- Series:
- LA
- Catalog:
- SchneiderElectric-SquareD_32357_9_61_CAT.pdf
- Current Rating:
- 350 A
- Voltage Rating:
- 600 VAC, 250 VDC
- Type:
- Thermal Magnetic
- Number of Poles:
- 3
- Data Sheet:
- SchneiderElectric-SquareD_47515_1_2_DATA.pdf
- Interrupting Rating:
- 22 kA at 600 VAC
- Prop 65 Warning:
- Yes
- Country of Origin:
- Mexico
MSRP $4,944.00Surplus $1,118.49 -
Square D LAL36200 Molded Case Breakers (MCCBs)
MSRP $4,619.00Surplus $1,486.51SKU: C15-7740 Brand: Square D MPN: LAL36200 UPC: 78590136805 Shipping Weight: 16.25 lbs. Shipping Height: 9.00 In. Shipping Length: 18.00 In. Shipping Width: 12.00 In...- SKU:
- C15-7740
- TS PIK:
- 21333405
- Size:
- 6 Inch Width x 5.84 Inch Depth x 11 Inch Height
- Terminal Type:
- Line/Load Lug
- Voltage Rating:
- 600 VAC 50/60 Hertz, 250 VDC
- Number of Poles:
- 3
- Frame Type:
- L
- Catalog:
- SchneiderElectric-SquareD_32357_7_37_CAT.pdf
- Series:
- LA
- Data Sheet:
- SchneiderElectric_14543_1_2_DATA.pdf
- Short Description:
- 600 VAC 50/60 Hz, 250 VDC, 200 A, 22 kA, 3-Pole, L-Frame, Unit Mount, Line/Load Lug Terminal, Thermal Magnetic, Adjustable, Molded Case Circuit Breaker
- Installation/Operator:
- SchneiderElectric-SquareD_01906_INST.pdf
- Current Rating:
- 200 A
- Type:
- Thermal Magnetic, Adjustable
- Maximum DC Voltage Rating:
- 250 V
- CAD Drawings:
- SchneiderElectric-SquareD_74682_1_CAD.pdf
- Interrupting Rating:
- 22 kA at 600 VAC, 10 kA at 250 VDC
- Maximum AC Voltage Rating:
- 600 V
- Prop 65 Warning:
- Yes
- Country of Origin:
- Mexico
MSRP $4,619.00Surplus $1,486.51 -
Square D LAL36250 Molded Case Breakers (MCCBs)
MSRP $4,619.00Surplus $938.00SKU: C15-7718 Brand: Square D MPN: LAL36250 UPC: 78590142674 Shipping Weight: 15.65 lbs. Shipping Height: 10.00 In. Shipping Length: 17.00 In. Shipping Width: 9.00 In...- SKU:
- C15-7718
- TS PIK:
- 21261505
- Data Sheet:
- SchneiderElectric_14548_1_2_DATA.pdf
- Catalog:
- SchneiderElectric-SquareD_32357_7_37_CAT.pdf
- Type:
- Thermal Magnetic, Adjustable
- CAD Drawings:
- SchneiderElectric-SquareD_74682_1_CAD.pdf
- Maximum AC Voltage Rating:
- 600 V
- Size:
- 6 Inch Width x 5.84 Inch Depth x 11 Inch Height
- Maximum DC Voltage Rating:
- 250 V
- Interrupting Rating:
- 22 kA at 600 VAC, 10 kA at 250 VDC
- Voltage Rating:
- 600 VAC 50/60 Hertz, 250 VDC
- Number of Poles:
- 3
- Terminal Type:
- Line/Load Lug
- Current Rating:
- 250 A
- Frame Type:
- L
- Short Description:
- 600 VAC 50/60 Hz, 250 VDC, 250 A, 22 kA, 3-Pole, L-Frame, Unit Mount, Line/Load Lug Terminal, Thermal Magnetic, Adjustable, Molded Case Circuit Breaker
- Series:
- LA
- Installation/Operator:
- SchneiderElectric-SquareD_01906_INST.pdf
- Prop 65 Warning:
- Yes
- Country of Origin:
- United States
MSRP $4,619.00Surplus $938.00