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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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 KD3250 Molded Case Breakers (MCCBs) KD 3P 250A 600V 50/60Hz 3Ph K Frame
MSRP $5,600.00Surplus $1,190.83SKU: 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 $1,190.83 -
Eaton KD3300W Molded Case Breakers (MCCBs)
MSRP $7,422.56Surplus $1,099.59SKU: 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 $1,099.59 -
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 $2,083.41SKU: 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
- Type:
- Fixed Thermal Magnetic Trip
- Voltage Rating:
- 600 VAC 50/60 Hertz, 250 VDC
- Approval:
- UL
- Frame Type:
- K
- Short Description:
- 600 VAC 50/60 Hz, 250 VDC, 400 A, 35 kA, 3-Pole, Line/Load Terminal, KD Frame, Interchangeable Trip, Fixed Thermal, Molded Case Circuit Breaker with 50 Deg C Calibration
- Current Rating:
- 400 A
- Number of Poles:
- 3
- Maximum DC Voltage Rating:
- 250
- Maximum AC Voltage Rating:
- 600 V
- Catalog:
- Eaton_46579_V4T2_254_V4T2_255_V4T2_258_V4T2_300-V4T2_322_CAT.pdf
- Installation/Operator:
- Eaton_00085_INST.pdf
- Interrupting Rating:
- 65 kA at 240 VAC, 35 kA at 480 VAC
- Terminal Type:
- Line and Load
- CAD Drawings:
- Eaton_10161_1_CAD.pdf
- Size:
- 5.5 Inch Width x 4.1 Inch Depth x 5.5 Inch Height
MSRP $8,875.00Surplus $2,083.41 -
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 KDB3400FT36W Molded Case Breakers (MCCBs)
MSRP $7,457.00Surplus $2,684.52SKU: C15-12166 Brand: Eaton MPN: KDB3400FT36W UPC: 78211371237 Shipping Weight: 14.95 lbs. Shipping Height: 7.00 In. Shipping Length: 15.00 In. Shipping Width: 7.00...- SKU:
- C15-12166
- TS PIK:
- 118266524
MSRP $7,457.00Surplus $2,684.52 -
Eaton KDC2400F Molded Case Breakers (MCCBs)
MSRP $12,041.00Surplus $4,334.76SKU: C15-12165 Brand: Eaton MPN: KDC2400F UPC: 78667934212 Shipping Weight: 8.80 lbs. Shipping Height: 7.00 In. Shipping Length: 12.00 In. Shipping Width: 7.00 In...- SKU:
- C15-12165
- TS PIK:
- 13681
MSRP $12,041.00Surplus $4,334.76 -
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 KES3125LSI Trip Units KES 3P 125A 600V 50/60Hz
MSRP $5,412.00Surplus $1,558.76SKU: A13-1186 Brand: Eaton MPN: KES3125LSI UPC: 786679271254 Shipping Weight: 2.70 lbs. Shipping Height: 5.00 In. Shipping Length: 7.00 In. Shipping Width: 6.00 In...- SKU:
- A13-1186
- Poles:
- 3
- Volts:
- 600 V
- Amps:
- 125 A
- Type:
- KES
- Series:
- C Series
- Short Description:
- KES DIGI 310 T/U 3P 125A
- Country of Origin:
- United States
MSRP $5,412.00Surplus $1,558.76 -
Eaton KES3400LSI Trip Units
MSRP $1,816.56Surplus $1,941.80SKU: A13-1210 Brand: Eaton MPN: KES3400LSI UPC: 786679271056 Shipping Weight: 3.00 lbs. Shipping Height: 5.00 In. Shipping Length: 7.00 In. Shipping Width: 4.00 In...- SKU:
- A13-1210
- Type:
- Electronic
- Frame Type:
- J-K
- Current Rating:
- 400 A
- Number of Poles:
- 3
- Short Description:
- 400 A, 3-Pole, Electronic Adjustable LSI, Molded Case Circuit Breaker Trip Unit
- Catalog:
- Eaton_14666_V4T2_299_V4T2_301_V4T2_303_V4T2_304_CAT.pdf
- Installation/Operator:
- Eaton_00109_INST.pdf
- Specification/Technical:
- Eaton_08649_1_2_SPEC.pdf
- TS PIK:
- 107000622
- Series:
- C
- Country of Origin:
- United States
MSRP $1,816.56Surplus $1,941.80 -
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 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
- Short Description:
- EATON MOLDED CASE CIRCUIT BREAKER ACCESSORY END CAP KIT, ACCESSORIES AND TERMINA
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
- Country of Origin:
- United States​
MSRP $95.28Surplus $34.44 -
Eaton KT3175T Trip Units KT 3P 175A 600V 50/60Hz
MSRP $1,550.00Surplus $579.88SKU: A13-1235 Brand: Eaton MPN: KT3175T UPC: 786679266038 Shipping Weight: 1.50 lbs. Shipping Height: 6.00 In. Shipping Length: 7.00 In. Shipping Width: 5.00 In...- SKU:
- A13-1235
- Adjustment:
- Magnetic Trip
- Approval:
- UL 489
- Approval:
- CSA C22.2
- Amps:
- 175 A
- Frame:
- K
- Poles:
- 3
- Type:
- Thermal Magnetic
- Specification/Technical:
- Eaton_08714_1_2_SPEC.pdf
- Frame Type:
- K
- Catalog:
- EatonCorp-CutlerHammer_00123_V4T2_254_V4T2_255_V4T2_299_V4T2_300_V4T2_302_CAT.pdf
- Current Rating:
- 175 A
- Number of Poles:
- 3
- Country of Origin:
- Dominican Republic
- Short Description:
- EATON MOLDED CASE CIRCUIT BREAKER ACCESSORY TRIP UNIT, TRIP UNIT, 175 A, THREE-P
MSRP $1,550.00Surplus $579.88 -
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 -
Eaton KT3250T Trip Units
MSRP $1,216.84Surplus $169.94SKU: A13-1048 Brand: Eaton MPN: KT3250T UPC: 786679266069 Shipping Weight: 1.60 lbs. Shipping Height: 4.00 In. Shipping Length: 6.00 In. Shipping Width: 4.00 In...- SKU:
- A13-1048
- Series:
- C, KT
- Type:
- Thermal Magnetic
- Approval:
- UL
- Amps:
- 250 A
- Poles:
- 3
- Frame Type:
- K
- Accessory Type:
- Trip Unit
- Adjustment:
- Magnetic Trip
- Short Description:
- 250 A, 3-Pole, K Frame, Thermal Magnetic
- Catalog:
- Eaton_27487_V4T2_299_V4T2_300_V4T2_302_CAT.pdf
- TS PIK:
- 21507992
- Number of Poles:
- 3
- Current Rating:
- 250 A
- Country of Origin:
- Dominican Republic
MSRP $1,216.84Surplus $169.94 -
Eaton KT4400T Circuit Breaker Accessories
MSRP $2,733.49Surplus $651.06SKU: C15-11239 Brand: Eaton MPN: KT4400T UPC: 78667922337 Shipping Weight: 2.65 lbs. Shipping Height: 6.00 In. Shipping Length: 9.00 In. Shipping Width: 6.00 In...- SKU:
- C15-11239
- TS PIK:
- 106999701
- Country of Origin:
- Dominican Republic
- Short Description:
- EATON MOLDED CASE CIRCUIT BREAKER ACCESSORY TRIP UNIT, EATON MOLDED CASE CIRCUIT
MSRP $2,733.49Surplus $651.06
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.
