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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Siemens Q2125 Miniature Circuit Breakers (MCBs) 2P 125A
MSRP $758.24Surplus $76.98Siemens Q2125 Miniature Circuit Breakers (MCBs) 2P 125A​ ARCA SKU: C15-6098 Brand: Siemens MPN: Q2125 UPC: 66286200404 Shipping Weight: 2.70 lbs. Shipping Height: 4.00 In. Shipping...- SKU:
- C15-6098
- TS PIK:
- 115277069
- Catalog:
- SiemensAG_01829_2_9_CAT.pdf
- Voltage Rating:
- 120/240 VAC
- Short Description:
- 120/240 VAC, 125 A, 10 kA Interrupt, 2-Pole, Plug-In Mount, QP/MP-Frame, Common Trip, Thermal Magnetic, Miniature, Circuit Breaker
- Country of Origin:
- Mexico
- Type:
- Common Trip, Thermal Magnetic, Miniature
- Size:
- 2 Inch Width x 3 Inch Depth x 3 Inch Height
- Mounting:
- Plug-On
- Number of Poles:
- 2
- Interrupting Rating:
- 10 kA
- Current Rating:
- 125 A
- Used On:
- Load Center
- Installation/Operator:
- SiemensAG_00053_INST.pdf
- Data Sheet:
- SiemensAG_00870_1_2_DATA.pdf
- Approval:
- UL 489, CSA
MSRP $758.24Surplus $76.98 -
Siemens 3VA4112-5ED34-0AA0 Molded Case Breakers (MCCBs)
MSRP $2,240.70Surplus $1,490.07SKU: C15-10275 Brand: Siemens MPN: 3VA4112-5ED34-0AA0 UPC: 80476694346 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping...- SKU:
- C15-10275
- TS PIK:
- 128130374
- Current Rating:
- 125 A
- Number of Poles:
- 3
- Catalog:
- SiemensAG_09175_17_7_17_16_17_17_CAT.pdf
- Approval:
- UL 489
- Interrupting Rating:
- 85 kA at 240 VAC/250 VDC, 35 kA at 480 Star/277/480 VAC, 18 kA at 600 Star/347 VAC
- Application:
- Industrial, Infrastructure, Building
- Voltage Rating:
- 240/480 Star/277/480/600 Star/347 VAC, 250 VDC
- Installation/Operator:
- SiemensAG_00547_INST.pdf
- Data Sheet:
- SiemensAG_09715_1-5_DATA.pdf
- Type:
- Molded Case, Non-Interchangeable Trip, Low Vage, Thermal Magnetic, Medium Breaking Capacity
- Short Description:
- BRKR 3VA41 3P 125A 35kA FTFM LD LUG
- Trip Setting:
- 125 to 1250 A
- Country of Origin:
- MEX
MSRP $2,240.70Surplus $1,490.07 -
Siemens 3VA4112-6ED34-0AA0 Molded Case Breakers (MCCBs)
MSRP $2,646.37Surplus $1,759.83SKU: C15-10276 Brand: Siemens MPN: 3VA4112-6ED34-0AA0 UPC: 80476694348 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping...- SKU:
- C15-10276
- TS PIK:
- 128130375
- Short Description:
- BRKR 3VA41 3P 125A 65kA FTFM LD LUG
- Approval:
- UL 489
- Voltage Rating:
- 240/480 Star/277/480/600 Star/347 VAC, 250 VDC
- Country of Origin:
- MEX
- Trip Setting:
- 125 to 1250 A
- Current Rating:
- 125 A
- Type:
- Molded Case, Non-Interchangeable Trip, Low Vage, Thermal Magnetic, High Breaking Capacity
- Interrupting Rating:
- 150 kA at 240 VAC, 65 kA at 480 Star/277/480 VAC, 25 kA at 600 Star/347 VAC, 100 kA at 250 VDC
- Number of Poles:
- 3
- Application:
- Industrial, Infrastructure, Building
- Installation/Operator:
- SiemensAG_00547_INST.pdf
- Data Sheet:
- SiemensAG_09716_1-5_DATA.pdf
- Catalog:
- SiemensAG_09175_17_7_17_16_17_17_CAT.pdf
MSRP $2,646.37Surplus $1,759.83 -
Siemens B2125H Miniature Circuit Breakers (MCBs)
MSRP $2,898.21Surplus $212.36SKU: C15-7395 Brand: Siemens MPN: B2125H UPC: 78364354124 Shipping Weight: 0.90 lbs. Shipping Height: 2.00 In. Shipping Length: 4.00 In. Shipping Width: 3.00 In...- SKU:
- C15-7395
- TS PIK:
- 106248788
- Used On:
- Panelboard
- Catalog:
- SiemensAG_01796_7_29-7_35_CAT.pdf
- Data Sheet:
- SiemensAG_09756_1_2_DATA.pdf
- Current Rating:
- 125 A
- Installation/Operator:
- SiemensAG_00053_INST.pdf
- Interrupting Rating:
- 22 kA
- Type:
- Main, Branch
- Voltage Rating:
- 120/240 VAC
- Number of Poles:
- 2
- Country of Origin:
- Mexico
- Application:
- Electrical Distribution
- Short Description:
- BREAKER 125A 2P 120/240V 22K BLH
- Approval:
- UL 489
- Installation:
- Bolt-On
MSRP $2,898.21Surplus $212.36 -
Siemens BQ2B125 Miniature Circuit Breakers (MCBs)
MSRP $1,433.45Surplus $172.54SKU: C15-8751 Brand: Siemens MPN: BQ2B125 UPC: 78364316124 Shipping Weight: 0.70 lbs. Shipping Height: 2.00 In. Shipping Length: 4.00 In. Shipping Width: 3.00 In...- SKU:
- C15-8751
- TS PIK:
- 115495142
- Data Sheet:
- SiemensAG_05386_1_DATA.pdf
- Voltage Rating:
- 120/240 VAC
- Size:
- 3 Inch W x 4 Inch D x 2 Inch H
- Current Rating:
- 125 A
- Number of Poles:
- 2
- Mounting:
- Bolt-On
- Terminal Type:
- Load Lug
- Type:
- Molded Case
- Interrupting Rating:
- 10 kA at 120/240 VAC
- Catalog:
- SiemensAG_01698_17_1_17_7_CAT.pdf
- Short Description:
- 120/240 VAC, 125 A, 10 kA, 2-Pole, Load Lug Terminal, BQ Frame, Bolt-On, Common Trip, Molded Case Circuit Breaker
- Country of Origin:
- Mexico
- Approval:
- UL 489
MSRP $1,433.45Surplus $172.54 -
Siemens ED43B125 Molded Case Breakers (MCCBs)
MSRP $1,647.17Surplus $861.25SKU: C15-7122 Brand: Siemens MPN: ED43B125 UPC: 78364320950 Shipping Weight: 3.50 lbs. Shipping Height: 5.00 In. Shipping Length: 8.00 In. Shipping Width: 6.00 In...- SKU:
- C15-7122
- TS PIK:
- 126260923
- Short Description:
- 480 VAC, 125 A, 65 kA Interrupt, 3-Pole, Load Lug Terminal, ED4-Frame, Thermal Magnetic, Molded Case Circuit Breaker
- Series:
- ED4
- Current Rating:
- 125 A
- Frame Type:
- ED
- Number of Poles:
- 3
- Type:
- Molded Case, Thermal Magnetic
- Voltage Rating:
- 480 VAC
- Terminal Type:
- Load Lug
- Interrupting Rating:
- 65 kA at 240 VAC, 18 kA at 480 VAC (UL 489)
- Maximum AC Voltage Rating:
- 480 V
- Size:
- 3 Inch Width x 4.56 Inch Depth x 6.35 Inch Height
- Catalog:
- SiemensAG_00876_5_30_CAT.pdf
- Country of Origin:
- Mexico
- Approval:
- UL 489, CSA
MSRP $1,647.17Surplus $861.25 -
Siemens ED63A125 Motor Circuit Protector (MCPs)
MSRP $7,747.16Surplus $1,446.61SKU: C15-7427 Brand: Siemens MPN: ED63A125 UPC: 78364321088 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-7427
- TS PIK:
- 21367502
- Current Rating:
- 125 A
- Catalog:
- SiemensAG_01698_9_111_CAT.pdf
- Short Description:
- 600 VAC, 250 VDC, 125 A, 18/25 kA, 500 to 1250 A Instantaneous Trip, 3-Pole, 3 to 3/0 AWG Copper/1 to 2/0 AWG Aluminum, Load Lug Terminal, ED Frame, Magnetic, ETI Motor, Molded Case Circuit Breaker
- Number of Poles:
- 3
- Voltage Rating:
- 600 VAC, 250 VDC
- Size:
- 6 Inch Width x 4 Inch Depth x 7 Inch Height
- Terminal Type:
- Not Included
- Installation/Operator:
- SiemensAG_00313_INST.pdf
- Series:
- ED6-A
- Type:
- Molded Case, Magnetic
- Country of Origin:
- Mexico
- Approval:
- UL 489
- Maximum AC Voltage Rating (V):
- 600
- Trip Setting:
- 500 to 1250 A
- Motor FLA:
- 38.46 to 113.6 A
MSRP $7,747.16Surplus $1,446.61 -
Siemens ED63B125 Molded Case Breakers (MCCBs)
MSRP $7,255.73Surplus $1,987.12SKU: C15-7673 Brand: Siemens MPN: ED63B125 UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In. Product...- SKU:
- C15-7673
- TS PIK:
- 21333950
- Type:
- Thermal Magnetic
- Short Description:
- 600 VAC 50/60 Hz, 500 VDC, 125 A, 18/25 kA, 3-Pole, 3 to 3/0 AWG Copper/1 to 2/0 AWG Aluminum, Load Lug Terminal, ED Frame, Thermal Magnetic Trip Unit, Molded Case Circuit Breaker
- Series:
- ED6
- Country of Origin:
- Mexico
- Frame Type:
- ED
- Catalog:
- SiemensAG_01698_17_78-17_80_CAT.pdf
- Installation/Operator:
- SiemensAG_00313_INST.pdf
- Interrupting Rating:
- 65 kA at 240 VAC (UL 489), 25 kA at 480 VAC (UL 489), 18 kA at 600 VAC/500 VDC (UL 489), 65/17 kA at 220/240 VAC (IEC), 35/9 kA at 380/415 VAC (IEC), 18/5 kA at 500 VAC (IEC)
- Terminal Type:
- Load Lug
- Size:
- 3 Inch Width x 4.56 Inch Depth x 6.35 Inch Height
- Voltage Rating:
- 600 VAC, 500 VDC
- Number of Poles:
- 3
- Current Rating:
- 125 A
- Approval:
- UL 489, IEC
MSRP $7,255.73Surplus $1,987.12 -
Siemens FD63T125 Molded Case Breakers (MCCBs)
MSRP $4,658.37Surplus $573.38SKU: C15-8765 Brand: Siemens MPN: FD63T125 UPC: 78364321194 Shipping Weight: 1.20 lbs. Shipping Height: 4.00 In. Shipping Length: 5.00 In. Shipping Width: 5.00 In...- SKU:
- C15-8765
- TS PIK:
- 115243808
- Current Rating:
- 125 A
- Number of Poles:
- 3
- Catalog:
- SiemensAG_09175_17_4_17_81_17_85_17_86_CAT.pdf
- Installation/Operator:
- SiemensAG_00594_INST.pdf
- Frame Type:
- FD
- Type:
- Molded Case, Low Vage, Thermal Magnetic, Standard Breaking Capacity
- Country of Origin:
- Mexico
- Approval:
- UL 489
- Short Description:
- TRIP FOR FD6 3P 600V 125A
MSRP $4,658.37Surplus $573.38 -
Siemens HFXD63B125L Molded Case Breakers (MCCBs)
MSRP $20,277.92Surplus $2,061.78SKU: C15-7516 Brand: Siemens MPN: HFXD63B125L UPC: 78364308449 Shipping Weight: 9.35 lbs. Shipping Height: 7.00 In. Shipping Length: 11.00 In. Shipping Width: 6.00 In...- SKU:
- C15-7516
- TS PIK:
- 115558313
- Number of Poles:
- 3
- Maximum AC Voltage Rating:
- 600 V
- Interrupting Rating:
- 25 kA at 600 VAC/500 VDC
- Frame Type:
- FD
- Installation/Operator:
- SiemensAG_00590_INST.pdf
- Voltage Rating:
- 600 VAC 50/60 Hertz, 500 VDC
- Type:
- Molded Case, Low Vage, Thermal Magnetic, High Breaking Capacity
- Terminal Type:
- Line and Load Lug
- Maximum DC Voltage Rating:
- 500 V
- Size:
- 4.5 Inch Width x 4 Inch Depth x 9.5 Inch Height
- Current Rating:
- 125 A
- Catalog:
- SiemensAG_09175_17_4_17_81_CAT.pdf
- Short Description:
- BRKR HFD6 3P 600V 125A FX LUG
- Country of Origin:
- Mexico
- Approval:
- UL 489
MSRP $20,277.92Surplus $2,061.78 -
Siemens HGB3B125B Molded Case Breakers (MCCBs)
MSRP $8,167.80Surplus $2,197.82SKU: C15-10436 Brand: Siemens MPN: HGB3B125B UPC: 88762121990 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10436
- TS PIK:
- 125309227
- Catalog:
- SiemensAG_10807_1-5_CAT.pdf
- Country of Origin:
- Mexico
- Type:
- Molded Case, Low Vage, Thermal and Fixed Magnetic, High Breaking Capacity
- Number of Poles:
- 3
- Interrupting Rating:
- 14 kA at 600 Star/347 VAC
- Voltage Rating:
- 600 Star/347 VAC 50/60 Hertz
- Short Description:
- 240/480 Star/277/600 Star/347 VAC 50/60 Hz, 125/250 VDC, 125 A, 100 kA Interrupt, 3-Pole, Molded Case, Low Vage, Thermal and Fixed Magnetic, High Breaking Capacity, Panelboard Circuit Breaker
- Current Rating:
- 125 A
- Approval:
- UL 489
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Application:
- Lighting, Distribution
MSRP $8,167.80Surplus $2,197.82 -
Siemens HQR23B125 Molded Case Breakers (MCCBs) EA
MSRP $5,445.20Surplus $1,831.30SKU: C15-10454 Brand: Siemens MPN: HQR23B125 UPC: 80476613691 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10454
- TS PIK:
- 126908870
- Voltage Rating:
- 240 VAC 50/60 Hertz
- Interrupting Rating:
- 65 kA at 240 VAC
- Country of Origin:
- Mexico
- Frame Type:
- QR
- Number of Poles:
- 3
- Current Rating:
- 125 A
- Type:
- Molded Case, Low Vage, Thermal Magnetic
- Installation/Operator:
- SiemensAG_00598_INST.pdf
- Data Sheet:
- SiemensAG_09583_1_2_DATA.pdf
- Size:
- 4.5 Inch Width x 2.53 Inch Depth x 7 Inch Height
- Catalog:
- SiemensAG_09175_17_1_17_10_CAT.pdf
- Maximum AC Voltage Rating:
- 240 V
- Terminal Type:
- Not Included
- Approval:
- UL 489, CSA C22.2
MSRP $5,445.20Surplus $1,831.30 -
Siemens LGB3B125B Molded Case Breakers (MCCBs) 3P 125A
MSRP $6,391.30Surplus $779.24SKU: C15-7703 Brand: Siemens MPN: LGB3B125B UPC: 88762122035 Shipping Weight: 2.58 lbs. Shipping Height: 5.40 In. Shipping Length: 3.00 In. Shipping Width: 2.80 In...- SKU:
- C15-7703
- TS PIK:
- 21331323
- Series:
- LGB
- Voltage Rating:
- 480 V
- Catalog:
- SiemensAG_00564_7_33_CAT.pdf
- Number of Poles:
- 3
- Terminal Type:
- Load Lug
- Current Rating:
- 125 A
- Size:
- 3 Inch Width x 2.8 Inch Depth x 5.4 Inch Height
- Short Description:
- 600 VAC Star/347 VAC, 125 A, 65 kA at 480 VAC Star/277 VAC, 3-Pole, 8 to 1/0 AWG Copper/Aluminum, Load Lug Terminal, LGB Frame, Thermal Magnetic Trip Unit, Molded Case Circuit Breaker for Panelboard
- Interrupting Rating:
- 100 kA at 240 VAC, 65 kA at 480 VAC Star/347 VAC, 14 kA at 600 VAC Star/347 VAC (UL)
- Country of Origin:
- Mexico
- Approval:
- UL
- Used On:
- Panelboard
- Wire Size:
- 8 to 1/0 AWG (Copper/Aluminum)
MSRP $6,391.30Surplus $779.24 -
Siemens MBK125A Molded Case Breakers (MCCBs) MBK 2P 125A 240V 50/60Hz 1Ph EA
MSRP $1,856.81Surplus $138.04Siemens MBK125A Molded Case Breakers (MCCBs) MBK 2P 125A 240V 50/60Hz 1Ph EA​ ARCA SKU: C15-5080 Brand: Siemens MPN: MBK125A UPC: 783643388000 Shipping Weight: 0.95 Shipping Height: 5.00...- SKU:
- C15-5080
- Series:
- MBK
- Type:
- Main
- Approval:
- UL 489
- Approval:
- CSA C22.2
- Volts:
- 240 V
- Amps:
- 125 A
- Used On:
- Load Center
- Interrupting Rating:
- 22 kA
- Application:
- Distribution
- Short Description:
- 125 A, 22 kA, Steel, Main
- Catalog:
- SiemensAG_00562_1_22_1_25_1_45_CAT.pdf
- Data Sheet:
- SiemensAG_06451_1_DATA.pdf
- Current Rating:
- 125 A
- Size:
- 3 Inch Width x 4 Inch Depth x 4 Inch Height
- Installation/Operator:
- SiemensAG_00698_INST.pdf
- Country of Origin:
- Mexico
- Wire Size:
- 4 to 300 AWG (Copper/Aluminum)
- Mounting:
- Plug-On
MSRP $1,856.81Surplus $138.04 -
Siemens MBKQJ3125A Miniature Circuit Breakers (MCBs)
MSRP $4,202.33Surplus $992.21SKU: C15-7487 Brand: Siemens MPN: MBKQJ3125A UPC: 88762179009 Shipping Weight: 8.20 lbs. Shipping Height: 9.00 In. Shipping Length: 15.00 In. Shipping Width: 10.00 In...- SKU:
- C15-7487
- TS PIK:
- 115459205
- Series:
- Series MBK
- Used On:
- Sentron P1 Panelboard
- Type:
- Main
- Number of Poles:
- 3
- Catalog:
- SiemensAG_01822_1_CAT.pdf
- Short Description:
- Mounting Kit for 240 V 125 A 10 kA 3-Pole QJ2/QR2 Panelboard Main Breaker
- Interrupting Rating:
- 10 kA at 240 VAC (UL)
- Current Rating:
- 125 A
- Voltage Rating:
- 240 VAC at 60 Hz
- Country of Origin:
- Mexico
MSRP $4,202.33Surplus $992.21 -
Siemens Q2125B Miniature Circuit Breakers (MCBs)
MSRP $462.84Surplus $307.79SKU: C15-10531 Brand: Siemens MPN: Q2125B UPC: 78364314870 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10531
- TS PIK:
- 21366657
- Type:
- Molded Case, Thermal and Fixed Magnetic Trip, Common Trip
- Country of Origin:
- MEX
- Interrupting Rating:
- 10 kA
- Used On:
- Loadcenter
- Number of Poles:
- 2
- Voltage Rating:
- 120/240 VAC at 50/60 Hz
- Size:
- 4 Inch W x 4.54 Inch H
- Terminal Type:
- Load Lug
- Current Rating:
- 125 A
- Wire Size:
- 1 AWG (Copper), 2/0 AWG (Aluminum)
- Mounting:
- Plug-On
- Short Description:
- 120/240 VAC, 125 A, 10 kA, 2-Pole, 1 AWG Copper/2/0 AWG Aluminum, Load Lug Terminal, Plug-On Mount, QPP Frame, Thermal Magnetic Trip Unit, Miniature Circuit Breaker for Load Center
- Data Sheet:
- SiemensAG_06990_1_DATA.pdf
- Catalog:
- SiemensAG_00562_1_45-1_47_CAT.pdf
- Approval:
- UL 489, CSA C22.2
MSRP $462.84Surplus $307.79 -
Siemens Q2125H Miniature Circuit Breakers (MCBs)
MSRP $1,927.60Surplus $122.11SKU: C15-7632 Brand: Siemens MPN: Q2125H UPC: 78364315640 Shipping Weight: 0.70 lbs. Shipping Height: 3.00 In. Shipping Length: 2.00 In. Shipping Width: 3.00 In...- SKU:
- C15-7632
- TS PIK:
- 120632077
- Type:
- Thermal Magnetic
- Voltage Rating:
- 120/240 V
- Mounting:
- Plug-On
- Data Sheet:
- SiemensAG_06991_1_DATA.pdf
- Current Rating:
- 125 A
- Catalog:
- SiemensAG_00562_1_41_1_46_1_47_CAT.pdf
- Size:
- 3 Inch Width x 3 Inch Depth x 2 Inch Height
- Short Description:
- 120/240 VAC, 125 A, 22 kA, 2-Pole, 8 to 2/0 AWG Copper/Aluminum, Load Lug Terminal, Plug-On Mount, QPH Frame, Common Trip, Thermal Magnetic Trip Unit, Miniature Circuit Breaker for Load Center
- Interrupting Rating:
- 22 kA
- Used On:
- Load Centre Main, Feeder
- Number of Poles:
- 2
- Installation/Operator:
- SiemensAG_00215_INST.pdf
- Country of Origin:
- Mexico
- Approval:
- UL 489
MSRP $1,927.60Surplus $122.11
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