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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Eaton JT3100T Molded Case Breakers (MCCBs)
MSRP $2,318.55Surplus $267.81SKU: C15-6829 Brand: Eaton MPN: JT3100T UPC: 78667940411 Shipping Weight: 1.25 lbs. Shipping Height: 5.00 In. Shipping Length: 7.00 In. Shipping Width: 6.00 In...- SKU:
- C15-6829
- Installation/Operator:
- Eaton_00707_INST.pdf
- Current Rating:
- 100 A
- Frame Type:
- J
- Catalog:
- EatonCorp-CutlerHammer_00123_V4T2_254_V4T2_255_V4T2_291-V4T2_293_CAT.pdf
- Number of Poles:
- 3
- Type:
- Fixed Thermal, Adjustable Magnetic
- TS PIK:
- 21510854
- Country of Origin:
- Dominican Republic
MSRP $2,318.55Surplus $267.81 -
Eaton K5AB-1818011 Circuit Breaker Accessories
MSRP $50.00Surplus $12.48Eaton K5AB-1818011 Circuit Breaker Accessories​ ARCA SKU: C15-11324 Brand: Eaton MPN: K5AB-1818011 UPC: 8711426533684 Shipping Weight: 0.80 lbs. Shipping Height: 4.00 In. Shipping...- SKU:
- C15-11324
MSRP $50.00Surplus $12.48 -
Eaton KD2300 Molded Case Breakers (MCCBs) KD 2P 300A 600V 50/60Hz 2Ph K Frame
MSRP $4,650.00Surplus $781.57SKU: C15-2894 Brand: Eaton MPN: KD2300 UPC: 786679349076 Shipping Weight: 9.20 lbs. Shipping Height: 4.00 In. Shipping Length: 11.00 In. Shipping Width: 6.00 In...- SKU:
- C15-2894
- Series:
- C
- Volts:
- 600 V
- Amps:
- 300 A
- Poles:
- 2
- Frequency Rating:
- 50/60 Hz
- Frame:
- K
- Short Description:
- EATON SERIES C COMPLETE MOLDED CASE CIRCUIT BREAKER, K-FRAME, KD, COMPLETE BREAK
- Country of Origin:
- Dominican Republic
MSRP $4,650.00Surplus $781.57 -
Eaton KD2400 Molded Case Breakers (MCCBs) CHKD 3P 400A 600V 50/60Hz 3Ph K Frame EA
MSRP $4,765.96Surplus $921.52SKU: C15-4712 Brand: Eaton MPN: KD2400 UPC: 78667934909 Shipping Weight: 11.50 lbs. Shipping Height: 6.00 In. Shipping Length: 11.00 In. Shipping Width: 6.00 In...- SKU:
- C15-4712
- Frame Type:
- K
- Voltage Rating:
- 600 V
- Current Rating:
- 400 A
- Number of Poles:
- 3
- Interrupting Rating:
- 65 kA at 480 Vac
- Short Description:
- Eaton Series C molded case circuit breaker frame, K-frame, CHKD, Fixed thermal, fixed magnetic trip type, Three-pole, 400A, 600 Vac, 250 Vdc, 65 kA at 480 Vac, 50/60 Hz, 100% rated
- TS PIK:
- 21509782
- Type:
- Molded Case, Thermal Magnetic
- Size:
- 5.5 Inch W x 4.063 Inch D x 10.125 Inch H
- Terminal Type:
- Aluminum/Copper Standard Line and Load Terminal
- Maximum AC Voltage Rating:
- 600 VAC
- Installation/Operator:
- Eaton_00085_INST.pdf
- Catalog:
- Eaton_27487_V4T2_254_V4T2_255_V4T2_299-V4T2_305_CAT.pdf
- Series:
- C
- Country of Origin:
- Dominican Republic
- Approval:
- UL
MSRP $4,765.96Surplus $921.52 -
Eaton KD2400 Molded Case Breakers (MCCBs) EA
MSRP $4,765.96Surplus $2,144.68Eaton KD2400 Molded Case Breakers (MCCBs) EA​ ARCA SKU: C15-5346 Brand: Eaton MPN: KD2400 UPC: Shipping Weight: 9.20 lbs. Shipping Height: 5.00 In. Shipping Length: 11...- SKU:
- C15-5346
- Approval:
- UL
- Amps:
- 400 A
- Frame:
- KD
- Interrupting Rating:
- 35 kA at 480 VAC
- Maximum AC Voltage:
- 600 VAC
- Poles:
- 2
- Size:
- 5.5 Inch W x 4.063 Inch D x 10.125 Inch H
- Terminal Type:
- Aluminum/Copper Standard Line and Load Terminal
- Type:
- Molded Case
- Type:
- Thermal Magnetic
- Volts:
- 600 VAC at 50/60 Hz
- Short Description:
- 600 VAC 50/60 Hz, 400 A, 35 kA, 2-Pole, KD Frame, Thermal Magnetic, Molded Case, Interchangeable Trip Circuit Breaker
- Series:
- C
- Specification/Technical:
- Eaton_08401_1_2_SPEC.pdf
- Installation/Operator:
- Eaton_00085_INST.pdf
- Frame Type:
- KD
- Maximum AC Voltage Rating:
- 600 VAC
- Number of Poles:
- 2
- Voltage Rating:
- 600 VAC at 50/60 Hz
- Current Rating:
- 400 A
- Catalog:
- Eaton_27487_V4T2_254_V4T2_255_V4T2_299-V4T2_305_CAT.pdf
- Country of Origin:
- Dominican Republic
MSRP $4,765.96Surplus $2,144.68 -
Eaton KD3150 Molded Case Breakers (MCCBs) KD 3P 150A 600V 50/60Hz 3Ph K Frame
MSRP $2,200.00Surplus $2,275.63SKU: C15-3038 Brand: Eaton MPN: KD3150 UPC: 786679349120 Shipping Weight: 10.05 lbs. Shipping Height: 4.00 In. Shipping Length: 11.00 In. Shipping Width: 6.00 In...- SKU:
- C15-3038
- TS PIK:
- 21509785
- Voltage Rating:
- 600 VAC at 50/60 Hz
- Frame Type:
- KD
- Number of Poles:
- 3
- Series:
- C
- Short Description:
- 600 VAC 50/60 Hz, 150 A, 35 kA, 3-Pole, KD Frame, Thermal Magnetic, Molded Case, Interchangeable Trip Circuit Breaker
- Current Rating:
- 150 A
- Type:
- Molded Case, Thermal Magnetic
- Maximum AC Voltage Rating:
- 600 VAC
- Installation/Operator:
- Eaton_00085_INST.pdf
- Terminal Type:
- Aluminum/Copper Standard Line and Load Terminal
- Size:
- 5.5 Inch W x 4.063 Inch D x 10.125 Inch H
- Interrupting Rating:
- 35 kA at 480 VAC
- Catalog:
- Eaton_27487_V4T2_254_V4T2_255_V4T2_299-V4T2_305_CAT.pdf
- CAD Drawings:
- Eaton_10161_1_CAD.pdf
MSRP $2,200.00Surplus $2,275.63 -
Eaton KD3225 Molded Case Breakers (MCCBs) 3P 225A 600V EA
MSRP $5,756.77Surplus $1,386.51SKU: C15-6840 Brand: Eaton MPN: KD3225 UPC: 78667934915 Shipping Weight: 9.95 lbs. Shipping Height: 5.00 In. Shipping Length: 11.00 In. Shipping Width: 6.00 In...- SKU:
- C15-6840
- TS PIK:
- 115928131
- Interrupting Rating:
- 35 kA at 480 VAC
- Voltage Rating:
- 600 VAC at 50/60 Hz
- Terminal Type:
- Aluminum/Copper Standard Line and Load Terminal
- Type:
- Molded Case, Thermal Magnetic
- Series:
- C
- Number of Poles:
- 3
- Short Description:
- 600 VAC 50/60 Hz, 225 A, 35 kA, 3-Pole, KD Frame, Thermal Magnetic, Molded Case, Interchangeable Trip Circuit Breaker
- CAD Drawings:
- Eaton_10161_1_CAD.pdf
- Current Rating:
- 225 A
- Frame Type:
- KD
- Installation/Operator:
- Eaton_00085_INST.pdf
- Size:
- 5.5 Inch W x 4.063 Inch D x 10.125 Inch H
- Catalog:
- Eaton_27487_V4T2_254_V4T2_255_V4T2_299-V4T2_305_CAT.pdf
- Maximum AC Voltage Rating:
- 600 VAC
MSRP $5,756.77Surplus $1,386.51 -
Eaton KD3250 Molded Case Breakers (MCCBs) KD 3P 250A 600V 50/60Hz 3Ph K Frame
MSRP $5,600.00Surplus $1,341.94SKU: C15-2133 Brand: Eaton MPN: KD3250 UPC: 786679349168 Shipping Weight: 10.30 lbs. Shipping Height: 5.00 In. Shipping Length: 10.00 In. Shipping Width: 6.00 In...- SKU:
- C15-2133
- Series:
- C
- Type:
- Molded Case
- Type:
- Thermal Magnetic
- Approval:
- UL
- Size:
- 5.5 Inch Width x 4.063 Inch Depth x 10.125 Inch Height
- Volts:
- 600 VAC at 50/60 Hertz
- Amps:
- 32 A
- Poles:
- 3
- Interrupting Rating:
- 35 kA at 480 VAC
- Terminal Type:
- Aluminum/Copper Standard Line and Load Terminal
- Frame Type:
- kD
- Maximum AC Voltage Rating:
- 600 VAC
- Short Description:
- 600 VAC 50/60 Hz, 250 A, 35 kA, 3-Pole, KD Frame, Thermal Magnetic, Molded Case
- Catalog:
- Eaton_27487_V4T2_254_V4T2_255_V4T2_299-V4T2_305_CAT.pdf
- Installation/Operator:
- Eaton_00085_INST.pdf
- CAD Drawing:
- Eaton_10161_1_CAD.pdf
- Current Rating:
- 250 A
- CAD Drawings:
- Eaton_10161_1_CAD.pdf
- Voltage Rating:
- 600 VAC
- Number of Poles:
- 3
MSRP $5,600.00Surplus $1,341.94 -
Eaton KD3300W Molded Case Breakers (MCCBs)
MSRP $7,422.56Surplus $1,196.09SKU: C15-9597 Brand: Eaton MPN: KD3300W UPC: 78667911746 Shipping Weight: 11.15 lbs. Shipping Height: 7.00 In. Shipping Length: 13.00 In. Shipping Width: 7.00 In...- SKU:
- C15-9597
- TS PIK:
- 116622652
- Short Description:
- EATON SERIES C COMPLETE MOLDED CASE CIRCUIT BREAKER, K-FRAME, KD, COMPLETE BREAK
- Country of Origin:
- Dominican Republic
MSRP $7,422.56Surplus $1,196.09 -
Eaton KD3300WA13 Molded Case Breakers (MCCBs) KD 3P 300A 600V 50/60Hz 3Ph K Frame
MSRP $6,255.00Surplus $1,312.19SKU: C15-2629 Brand: Eaton MPN: KD3300WA13 UPC: 782116630899 Shipping Weight: 11.35 lbs. Shipping Height: 7.00 In. Shipping Length: 12.00 In. Shipping Width: 7.00 In...- SKU:
- C15-2629
- Series:
- C
- Volts:
- 600 V
- Amps:
- 300 A
- Poles:
- 3
- Frequency Rating:
- 50/60 Hz
- Frame:
- K
- Short Description:
- Series C complete molded case circuit breaker, K-frame, KD, Fixed thermal, fixed magnetic trip, Three-pole, 300A, 600 Vac, 250 Vdc, 65 kAIC at 240 Vac, 35 kAIC at 480 Vac, No terminals, 2A-2B rear w/ right pigtail, 50/60 Hz
- Frame Type:
- K
- Number of Poles:
- 3
- Interrupting Rating:
- 65 kA
- Current Rating:
- 300 A
- Voltage Rating:
- 600 VAC
- Country of Origin:
- Dominican Republic
MSRP $6,255.00Surplus $1,312.19 -
Eaton KD3350WA13 Molded Case Breakers (MCCBs) KD 3P 350A 600V 50/60Hz 3Ph K Frame EA
MSRP $5,725.00Surplus $832.21SKU: C15-3402 Brand: Eaton MPN: KD3350WA13 UPC: 782116630882 Shipping Weight: 11.50 lbs. Shipping Height: 7.00 In. Shipping Length: 13.00 In. Shipping Width: 8.00 In...- SKU:
- C15-3402
- Series:
- C
- Volts:
- 600 V
- Amps:
- 350 A
- Poles:
- 3
- Frequency Rating:
- 50/60 Hz
- Frame:
- K
- Short Description:
- EATON SERIES C COMPLETE MOLDED CASE CIRCUIT BREAKER, K-FRAME, KD, FIXED THERMAL,
- TS PIK:
- 120877465
- Country of Origin:
- Dominican Republic
MSRP $5,725.00Surplus $832.21 -
Eaton KD3400V Molded Case Breakers (MCCBs)
MSRP $8,875.00Surplus $3,195.00SKU: C15-11897 Brand: Eaton MPN: KD3400V UPC: Shipping Weight: 12.90 lbs. Shipping Height: 6.00 In. Shipping Length: 15.00 In. Shipping Width: 7.00 In. Product...- SKU:
- C15-11897
- TS PIK:
- 115288616
MSRP $8,875.00Surplus $3,195.00 -
Eaton KDB3300 Molded Case Breakers (MCCBs) EA
MSRP $7,730.00Surplus $867.56SKU: C15-9686 Brand: Eaton MPN: KDB3300 UPC: 78667934937 Shipping Weight: 11.55 lbs. Shipping Height: 12.00 In. Shipping Length: 7.00 In. Shipping Width: 7.00 In...- SKU:
- C15-9686
- TS PIK:
- 21509810
- Size:
- 5.5 Inch Width x 4.1 Inch Depth x 10.13 Inch Height
- Maximum DC Voltage Rating:
- 250 V
- Terminal Type:
- Aluminum Line and Load
- Maximum AC Voltage Rating:
- 600 V
- Type:
- Fixed Thermal Magnetic, Molded Case
- Interrupting Rating:
- 65 kA at 240 VAC, 35 kA at 480 VAC, 25 kA at 600 VAC, 10 kA at 250 VDC (NEMA/UL/CSA), 65 kA at 240 VAC, 40 kA at 380/415 VAC, 10 kA at 250 VDC (IEC)
- Catalog:
- EatonCorp-CutlerHammer_00123_V4T2_254_V4T2_255_V4T2_258_V4T2_299-V4T2_322_CAT.pdf
- Installation/Operator:
- Eaton_00085_INST.pdf
- Frame Type:
- KD
- Voltage Rating:
- 600 VAC 50/60 Hertz, 250 VDC
- Current Rating:
- 300 A
- Number of Poles:
- 3
- Country of Origin:
- Dominican Republic
MSRP $7,730.00Surplus $867.56 -
Eaton KDC3125T52W Molded Case Breakers (MCCBs) KDC 3P 125A 120V 50/60Hz 3Ph K Frame
MSRP $15,595.00Surplus $3,442.69SKU: C15-1827 Brand: Eaton MPN: KDC3125T52W UPC: 782114404256 Shipping Weight: 11.84 lbs. Shipping Height: 6.25 In. Shipping Length: 12.25 In. Shipping Width: 6.75 In...- SKU:
- C15-1827
- Series:
- C
- Volts:
- 120 V
- Amps:
- 125 A
- Poles:
- 3
- Frequency Rating:
- 50/60 Hz
- Frame:
- K
- Short Description:
- KDC OPTIM 550 LSI 125A BRK W/O TERMINALS
- Current Rating:
- 125 A
- Number of Poles:
- 3
- Country of Origin:
- United States
MSRP $15,595.00Surplus $3,442.69 -
Eaton KPEK1 Circuit Breaker Accessories
MSRP $17.32Surplus $5.58Eaton KPEK1 Circuit Breaker Accessories​ ARCA SKU: C15-2044 Brand: Eaton MPN: KPEK1 UPC: 782114291839 Shipping Weight: 0.10 lbs. Shipping Height: 1.00 In. Shipping...- SKU:
- C15-2044
- Series:
- C
- Poles:
- 3
- Short Description:
- END CAP KIT_ 3P FOR F FRAME BREAKER
- TS PIK:
- 115463768
- Country of Origin:
- Dominican Republic
MSRP $17.32Surplus $5.58 -
Eaton KPEK14 Circuit Breaker Accessories
MSRP $33.17Surplus $11.18Eaton KPEK14 Circuit Breaker Accessories​ ARCA SKU: C15-9082 Brand: Eaton MPN: KPEK14 UPC: 00782114291856 Shipping Weight: 0.20 lbs. Shipping Height: 3.00 In. Shipping...- SKU:
- C15-9082
- Country of Origin:
- Dominican Republic
MSRP $33.17Surplus $11.18 -
Eaton KPEK34 Circuit Breaker Accessories
MSRP $70.00Surplus $22.56Eaton KPEK34 Circuit Breaker Accessories​ ARCA SKU: C15-11328 Brand: Eaton MPN: KPEK34 UPC: Shipping Weight: 0.30 lbs. Shipping Height: 2.00 In. Shipping Length: 6.00 In...- SKU:
- C15-11328
- TS PIK:
- 120215713
MSRP $70.00Surplus $22.56 -
Eaton KPEKM1 Circuit Breaker Accessories EA
MSRP $24.82Surplus $8.19Eaton KPEKM1 Circuit Breaker Accessories EA​ ARCA SKU: C15-5344 Brand: Eaton MPN: KPEKM1 UPC: 78211429184 Shipping Weight: 0.10 lbs. Shipping Height: 2.00 In. Shipping...- SKU:
- C15-5344
- Country of Origin:
- Dominican Republic
MSRP $24.82Surplus $8.19 -
Eaton KPR1A Circuit Breaker Accessories 12PK
MSRP $95.28Surplus $34.44SKU: C15-5209 Brand: Eaton MPN: KPR1A UPC: 786679110201 Shipping Weight: 0.15 lbs. Shipping Height: 1.00 In. Shipping Length: 6.00 In. Shipping Width: 8.00 In...- SKU:
- C15-5209
- Quantity:
- 12
- Thread Size:
- #10-32 TPI
- Thread Type:
- Imperial
- Used On:
- F Frame Series C Molded Case Circuit Breaker
- Short Description:
- #10-32 TPI, Imperial Thread, Keeper Nut for Circuit Breaker
- TS PIK:
- 21504934
MSRP $95.28Surplus $34.44 -
Eaton KT3200T Molded Case Breakers (MCCBs) EA
MSRP $1,645.00Surplus $689.81SKU: C15-9785 Brand: Eaton MPN: KT3200T UPC: 78667926604 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-9785
- TS PIK:
- 21507990
- Current Rating:
- 200 A
- Type:
- Thermal Magnetic
- Frame Type:
- K
- Number of Poles:
- 3
- Series:
- C
- Catalog:
- Eaton_27487_V4T2_299_V4T2_300_V4T2_302_CAT.pdf
- Short Description:
- 200 A, 3-Pole, K Frame, Thermal Magnetic, Molded Case Circuit Breaker Trip Unit
- Country of Origin:
- Dominican Republic
MSRP $1,645.00Surplus $689.81