
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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Eaton KDB3125 Molded Case Breakers (MCCBs) KDB 3P 125A 600V 50/60Hz 3Ph K Frame
MSRP $5,080.00Surplus $1,578.71SKU: C15-3987 Brand: Eaton MPN: KDB3125 UPC: 786679349311 Shipping Weight: 11.60 lbs. Shipping Height: 7.00 In. Shipping Length: 12.00 In. Shipping Width: 7.00 In...- SKU:
- C15-3987
- Series:
- C
- Volts:
- 600 V
- Amps:
- 125 A
- Poles:
- 3
- Frequency Rating:
- 50/60 Hz
- Frame:
- K
- Short Description:
- EATON SERIES C COMPLETE MOLDED CASE CIRCUIT BREAKER, K-FRAME, KDB, FIXED THERMAL
MSRP $5,080.00Surplus $1,578.71 -
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Eaton KDB3225W Molded Case Breakers (MCCBs) KDB 3P 225A 600V 50/60Hz 3Ph K Frame EA
MSRP $5,429.32Surplus $2,278.76SKU: C15-4957 Brand: Eaton MPN: KDB3225W UPC: 786679612101 Shipping Weight: 8.80 lbs. Shipping Height: 7.00 In. Shipping Length: 13.00 In. Shipping Width: 7.00 In...- SKU:
- C15-4957
- Approval:
- UL 489
- Approval:
- CSA C22.2
- Amps:
- 225 A
- Frame:
- KD
- Interrupting Rating:
- 35 kA at 480 VAC
- Interrupting Rating:
- 25 Kiloamp at 600 Volt AC
- Interrupting Rating:
- 10 Kiloamp at 250 Volt DC (NEMA/UL/CSA)
- Interrupting Rating:
- 40 Kiloamp at 380/415 Volt AC
- Interrupting Rating:
- 10 Kiloamp at 250 Volt DC (IEC)
- Maximum AC Voltage:
- 600 V
- Maximum DC Voltage:
- 250 V
- Poles:
- 3
- Size:
- 5.5 Inch Width x 4.1 Inch Depth x 10.13 Inch Height
- Terminal Type:
- Aluminum Standard Pressure Line and Load
- Type:
- Fixed Thermal Magnetic
- Type:
- Molded Case
- Volts:
- 600 VAC 50/60 Hertz
- Volts:
- 250 VDC
- Frame Type:
- KD
- Current Rating:
- 225 A
- Voltage Rating:
- 600 VAC 50/60 Hertz, 250 VDC
- Number of Poles:
- 3
- Installation/Operator:
- Eaton_00085_INST.pdf
- Maximum DC Voltage Rating:
- 250 V
- Catalog:
- EatonCorp-CutlerHammer_00123_V4T2_254_V4T2_255_V4T2_258_V4T2_299-V4T2_322_CAT.pdf
- Maximum AC Voltage Rating:
- 600 V
MSRP $5,429.32Surplus $2,278.76 -
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 -
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Eaton KDB3400FT32W Molded Case Breakers (MCCBs) KDB 3P 400A 600V 50/60Hz 3Ph K Frame
MSRP $12,460.00Surplus $3,872.72SKU: C15-4048 Brand: Eaton MPN: KDB3400FT32W UPC: 782113712277 Shipping Weight: 11.20 lbs. Shipping Height: 5.00 In. Shipping Length: 11.00 In. Shipping Width: 6.00...- SKU:
- C15-4048
- Series:
- C
- Volts:
- 600 V
- Amps:
- 400 A
- Poles:
- 3
- Frequency Rating:
- 50/60 Hz
- Frame:
- K
- Short Description:
- EATON SERIES C ELECTRONIC MOLDED CASE CIRCUIT BREAKER, K-FRAME, KDB, DIGITRIP 31
MSRP $12,460.00Surplus $3,872.72 -
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Eaton KDB3400KX02Y12D08 Molded Case Breakers (MCCBs) KDB 3P 400A 600V 50/60Hz 3Ph K Frame
MSRP $10,489.00Surplus $2,503.49SKU: C15-4140 Brand: Eaton MPN: KDB3400KX02Y12D08 UPC: 786679023105 Shipping Weight: 11.55 lbs. Shipping Height: 7.00 In. Shipping Length: 13.00 In. Shipping Width: 7...- SKU:
- C15-4140
- Series:
- C
- Volts:
- 600 V
- Amps:
- 400 A
- Poles:
- 3
- Frequency Rating:
- 50/60 Hz
- Frame:
- K
- Short Description:
- EATON SERIES C COMPLETE MOLDED CASE CIRCUIT BREAKER, K-FRAME, KDB, MOLDED CASE S
MSRP $10,489.00Surplus $2,503.49 -
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 -
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Eaton KDC3250 Molded Case Breakers (MCCBs)
MSRP $8,295.00Surplus $2,125.31SKU: C15-11710 Brand: Eaton MPN: KDC3250 UPC: Shipping Weight: 9.40 lbs. Shipping Height: 6.00 In. Shipping Length: 11.00 In. Shipping Width: 6.00 In. Product...- SKU:
- C15-11710
- TS PIK:
- 112279616
MSRP $8,295.00Surplus $2,125.31 -
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Eaton KDC3350 Molded Case Breakers (MCCBs) KDC 3P 350A 600V 50/60Hz 3Ph K Frame
MSRP $12,200.00Surplus $4,192.16SKU: C15-3177 Brand: Eaton MPN: KDC3350 UPC: 786679026366 Shipping Weight: 10.50 lbs. Shipping Height: 6.00 In. Shipping Length: 11.00 In. Shipping Width: 5.00 In...- SKU:
- C15-3177
- Approval:
- UL 489
- Approval:
- CSA C22.2
- Amps:
- 350 A
- Frame:
- KD
- Interrupting Rating:
- 100 kA at 480 V AC
- Interrupting Rating:
- 65 Amp at 600 Volt AC
- Interrupting Rating:
- 22 Kiloamp at 250 Volt DC (NEMA/UL/CSA)
- Interrupting Rating:
- 100 Volt AC at 380/415 Volt AC
- Interrupting Rating:
- 22 Kiloamp at 250 Volt DC (IEC)
- Maximum AC Voltage:
- 600 V
- Maximum DC Voltage:
- 250 V
- Poles:
- 3
- Size:
- 5.5 Inch Width x 4.1 Inch Depth x 10.13 Inch Height
- Terminal Type:
- Aluminum Line and Load
- Type:
- Thermal Magnetic
- Type:
- Ultra High Interrupting Capacity
- Type:
- Molded Case
- Volts:
- 600 VAC 50/60 Hertz
- Volts:
- 250 VDC
- TS PIK:
- 112279615
- Short Description:
- EATON SERIES C COMPLETE MOLDED CASE CIRCUIT BREAKER, K-FRAME, KDC, FIXED THERMAL
- Frame Type:
- KD
- Voltage Rating:
- 600 V AC 50/60 Hertz, 250 V DC
- Catalog:
- EatonCorp-CutlerHammer_00123_V4T2_254_V4T2_255_V4T2_258_V4T2_299-V4T2_322_CAT.pdf
- Current Rating:
- 350 A
- Maximum DC Voltage Rating:
- 250 V
- Number of Poles:
- 3
- Installation/Operator:
- Eaton_00085_INST.pdf
- Maximum AC Voltage Rating:
- 600 V
MSRP $12,200.00Surplus $4,192.16 -
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Eaton KDPV4175WF01 Molded Case Breakers (MCCBs) KD 4P 175A 1000V 50/60Hz 3Ph K Frame
MSRP $9,900.00Surplus $1,833.60SKU: C15-2224 Brand: Eaton MPN: KDPV4175WF01 UPC: 786685971018 Shipping Weight: 15.00 lbs. Shipping Height: 6.50 In. Shipping Length: 12.50 In. Shipping Width: 8.50...- SKU:
- C15-2224
- Frame Type:
- kD
- Voltage Rating:
- 1000 V
- Current Rating:
- 175 A
- Number of Poles:
- 4
- Short Description:
- EATON PV GUARD / SOLAR COMPLETE MOLDED CASE CIRCUIT BREAKER, K-FRAME, KD, COMPLE
MSRP $9,900.00Surplus $1,833.60 -
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Eaton KDPV4225WF01 Molded Case Breakers (MCCBs) KD 4P 225A 600V 50/60Hz 3Ph K Frame
MSRP $10,239.09Surplus $4,613.19SKU: C15-4991 Brand: Eaton MPN: KDPV4225WF01 UPC: 78668597103 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-4991
MSRP $10,239.09Surplus $4,613.19 -
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Eaton KDPV4300WF01 Molded Case Breakers (MCCBs) KD 4P 300A 600V 50/60Hz 3Ph K Frame
MSRP $10,329.28Surplus $4,975.94SKU: C15-4990 Brand: Eaton MPN: KDPV4300WF01 UPC: 78668597105 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-4990
MSRP $10,329.28Surplus $4,975.94 -
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Eaton KES3125ALSI KES 3P 125A 600V 50/60Hz 3Ph J-K Frame 1BOX
MSRP $4,356.00Surplus $1,960.47SKU: U00-1022 Brand: Eaton MPN: KES3125ALSI UPC: 786685894485 Shipping Weight: 2.80 lbs. Shipping Height: 5.50 In. Shipping Length: 6.80 In. Shipping Width: 4.30 In...- SKU:
- U00-1022
- Short Description:
- EATON MOLDED CASE CIRCUIT BREAKER ACCESSORY TRIP UNIT, TRIP UNIT, 125 A, THREE-P
MSRP $4,356.00Surplus $1,960.47 -
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 -
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Eaton KES3125LSIG Trip Units KES 3P 400A 600V 50/60Hz
MSRP $6,932.40Surplus $1,011.32SKU: A13-1043 Brand: Eaton MPN: KES3125LSIG UPC: 786679271261 Shipping Weight: 3.05 lbs. Shipping Height: 6.00 In. Shipping Length: 7.00 In. Shipping Width: 5.00 In...- SKU:
- A13-1043
- Type:
- Electronic RMS 310 Digitrip LSIG
- Approval:
- UL 489
- Approval:
- CSA C22.2
- Amps:
- 125 A
- Poles:
- 3
- Frame Type:
- K
- Adjustment:
- Independent Short Time Pickup
- Adjustment:
- Delay and Ground Fault
- Catalog:
- EatonCorp-CutlerHammer_00123_V4T2_254_V4T2_255_V4T2_301_V4T2_303_V4T2_304_CAT.pdf
- Installation/Operator:
- Eaton_00109_INST.pdf
- Short Description:
- KES DIGI 310+ T/U W/GROUND FAULT & LSI 3P 125A
- Number of Poles:
- 3
- Current Rating:
- 125 A
- Country of Origin:
- United States
MSRP $6,932.40Surplus $1,011.32 -
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Eaton KES3250ALSI Trip Units KES 3P 250A 600V 50/60Hz
MSRP $5,198.00Surplus $1,158.22SKU: A13-1223 Brand: Eaton MPN: KES3250ALSI UPC: 786685761312 Shipping Weight: 2.65 lbs. Shipping Height: 5.00 In. Shipping Length: 6.00 In. Shipping Width: 5.00 In...- SKU:
- A13-1223
- Short Description:
- KES 310+ ALSI 3P 250A W/MM
- Poles:
- 3
- Volts:
- 600 V
- Amps:
- 250 A
- Type:
- KES
- Series:
- C Series
MSRP $5,198.00Surplus $1,158.22 -
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Eaton KES3250LSIGB22 Trip Units KES 3P 250A 600V 50/60Hz
MSRP $6,033.00Surplus $1,344.17SKU: A13-1128 Brand: Eaton MPN: KES3250LSIGB22 UPC: 786685761299 Shipping Weight: 2.75 lbs. Shipping Height: 5.00 In. Shipping Length: 6.00 In. Shipping Width: 5.00...- SKU:
- A13-1128
- Short Description:
- EATON MOLDED CASE CIRCUIT BREAKER ACCESSORY TRIP UNIT, KES 310+ ELECTRONIC, 250
- Poles:
- 3
- Volts:
- 600 V
- Amps:
- 250 A
- Type:
- KES
- Series:
- C Series
MSRP $6,033.00Surplus $1,344.17 -
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Eaton KES34000LSI Trip Units KES 3P 250A 600V 50/60Hz
MSRP $1,200.00Surplus $480.00SKU: A13-1291 Brand: Eaton MPN: KES34000LSI UPC: Shipping Weight: 2.50 lbs. Shipping Height: 4.00 In. Shipping Length: 6.00 In. Shipping Width: 4.00 In. Product...- SKU:
- A13-1291
- Poles:
- 3
- Volts:
- 600 V
- Amps:
- 250 A
- Type:
- KES
- Series:
- C Series
MSRP $1,200.00Surplus $480.00 -
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 -
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Eaton KG3300WS43X01 Molded Case Breakers (MCCBs) KG 3P 300A 600V 50/60Hz 3Ph K Frame
MSRP $4,099.00Surplus $1,256.28SKU: C15-1752 Brand: Eaton MPN: KG3300WS43X01 UPC: 782116980512 Shipping Weight: 11.45 lbs. Shipping Height: 7.00 In. Shipping Length: 13.00 In. Shipping Width: 7.00...- SKU:
- C15-1752
- Series:
- kG
- Type:
- Molded Case
- Type:
- Thermal Magnetic
- Approval:
- UL 489
- Approval:
- CSA C22.2
- Volts:
- 600 VAC
- Amps:
- 32 A
- Poles:
- 3
- Interrupting Rating:
- 18 kA at 240 VAC 50/60 Hertz
- Interrupting Rating:
- 14 Kiloamp at 480 Volt AC 50/60 Hertz
- Interrupting Rating:
- 10 Kiloamp at 600 Volt AC 50/60 Hertz (UL 489)
- Interrupting Rating:
- 18/9 Kiloamp at 220/240 Volt AC 50/60 Hertz
- Interrupting Rating:
- 14/7 Kiloamp at 380/415 Volt AC 50/60 Hertz
- Interrupting Rating:
- 18/9/14/7/10/5 Kiloamp at 660/690 Volt AC 50/60 Hertz (IEC)
- Terminal Type:
- Load
- Frame Type:
- kG
- Maximum AC Voltage Rating:
- 600 V
- Short Description:
- 600 VAC, 300 A, 14 kA, 3-Pole, KG Frame, Thermal Magnetic
- Catalog:
- Eaton_46579_V4T2_420_V4T2_471-V4T2_473_CAT.pdf
- Installation/Operator:
- Eaton_00091_INST.pdf
- Voltage Rating:
- 600 VAC
- Current Rating:
- 300 A
- CAD Drawings:
- Eaton_10166_5_CAD.pdf
- Number of Poles:
- 3
MSRP $4,099.00Surplus $1,256.28 -
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Eaton KHMVD06B Circuit Breaker Accessories Vari-Depth Mechanism K & J Frame
MSRP $218.00Surplus $111.04Eaton KHMVD06B Circuit Breaker Accessories Vari-Depth Mechanism K & J Frame​ ARCA SKU: C15-3804 Brand: Eaton MPN: KHMVD06B UPC: 782116048847 Shipping Weight: 3.00 Shipping Height: 4.50 In...- SKU:
- C15-3804
- Frame:
- K & J
- Short Description:
- BLACK HANDLE_ 6@ SHAFT_ K-FRAME
MSRP $218.00Surplus $111.04
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.