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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Siemens MBK150A Loadcenters and Panelboards EA
MSRP $768.50Surplus $207.50Siemens MBK150A Loadcenters and Panelboards EA​ ARCA SKU: L19-4235 Brand: Siemens MPN: MBK150A UPC: 78364338799 Shipping Weight: 2.25 lbs. Shipping Height: 4.00 In. Shipping...- SKU:
- L19-4235
- Data Sheet:
- SiemensAG_06454_1_DATA.pdf
- Series:
- MBK
- Short Description:
- 120/240 VAC, 150 A, 22 kA, Steel, Main, Load Center Breaker Kit
- Catalog:
- SiemensAG_00562_1_22_1_25_1_45_CAT.pdf
- Current Rating:
- 150 A
- Voltage Rating:
- 240 VAC
- Installation/Operator:
- SiemensAG_00404_INST.pdf
- Interrupting Rating:
- 22 kA
- Type:
- Main
- Used On:
- Load Center
- Country of Origin:
- MEX
- Application:
- Distribution
- Approval:
- UL 489, CSA C22.2
MSRP $768.50Surplus $207.50 -
Siemens MBK200M Miniature Circuit Breakers (MCBs) M2 2P 200A 120/240VAC 60Hz
MSRP $1,009.00Surplus $131.35SKU: C15-1494 Brand: Murray MPN: MBK200M UPC: 040892009378 Shipping Weight: 2.25 lbs. Shipping Height: 5.00 In. Shipping Length: 7.00 In. Shipping Width: 4.00 In...- SKU:
- C15-1494
- Type:
- Fusible
- Amps:
- 32 A
- Used On:
- 200/225 A Rock Solid Loadcenter
- Enclosure:
- NEMA 3R
- Short Description:
- 120/240 VAC, 200 A, 22 kA, 2-Pole
- Catalog:
- SiemensAG_01821_22_23_CAT.pdf
- CAD Drawing:
- Eaton_41106_1_CAD.pdf
- Data Sheet:
- SiemensAG_06459_1_DATA.pdf
- Country of Origin:
- Mexico
MSRP $1,009.00Surplus $131.35 -
Siemens MBKFD3225 Molded Case Breakers (MCCBs)
MSRP $4,000.00Surplus $1,637.06SKU: C15-11554 Brand: Siemens MPN: MBKFD3225 UPC: 78364309620 Shipping Weight: 12.70 lbs. Shipping Height: 10.00 In. Shipping Length: 13.00 In. Shipping Width: 8.00...- SKU:
- C15-11554
- TS PIK:
- 115585192
MSRP $4,000.00Surplus $1,637.06 -
Siemens MBKFD3225A Molded Case Breakers (MCCBs) EA
MSRP $9,000.00Surplus $996.77SKU: C15-9640 Brand: Siemens MPN: MBKFD3225A UPC: 887621791650 Shipping Weight: 12.95 lbs. Shipping Height: 9.00 In. Shipping Length: 15.00 In. Shipping Width: 10.00...- SKU:
- C15-9640
- TS PIK:
- 126055062
- Short Description:
- Mounting Kit for 600 V 3-Pole 225 A 65 kA FXD63B225 Panelboard Main Circuit Breaker
- Type:
- Mounting Kit
- Catalog:
- SiemensAG_00565_11_14_CAT.pdf
- Country of Origin:
- Mexico
MSRP $9,000.00Surplus $996.77 -
Siemens MBKFD3A Circuit Breaker Accessories 50/60Hz
MSRP $1,325.00Surplus $377.72SKU: C15-1426 Brand: Siemens MPN: MBKFD3A UPC: 887621579098 Shipping Weight: 3.60 lbs. Shipping Height: 4.50 In. Shipping Length: 14.00 In. Shipping Width: 8.50 In...- SKU:
- C15-1426
- Number of Breakers:
- 0
- Poles:
- 0
- Type:
- Mounting Kit
- Type:
- Main/Sub Feed
- Used On:
- 250 A 3- Phase FD6/FXD6/HFD6/HFXD6 Circuit Breaker
- Used On:
- Revised P1 Panelboard
- Short Description:
- Mounting Kit with Filler for 250 A 3-Phase FD6/FXD6/HFD6/HFXD6 Frame Revised P1 Interior Panelboard Main/Subfeed Circuit Breaker
- Data Sheet:
- SiemensAG_06480_1_DATA.pdf
- Installation/Operator:
- SiemensAG_00417_INST.pdf
- Catalog:
- SiemensAG_00565_11_13_CAT.pdf
- Country of Origin:
- United States
MSRP $1,325.00Surplus $377.72 -
Siemens MBKJD3400 Molded Case Breakers (MCCBs)
MSRP $22,242.00Surplus $3,487.09SKU: C15-7484 Brand: Siemens MPN: MBKJD3400 UPC: 78364339279 Shipping Weight: 24.50 lbs. Shipping Height: 9.00 In. Shipping Length: 14.00 In. Shipping Width: 13.00 In...- SKU:
- C15-7484
- TS PIK:
- 115459160
- Catalog:
- SiemensAG_01822_1_CAT.pdf
- Number of Poles:
- 3
- Type:
- Mounting Kit
- Short Description:
- Mounting Kit for 3-Pole 400 A 65/35 kA JXD6 Frame JXD63B400 P1 Panelboard Main Circuit Breaker
- Country of Origin:
- Mexico
MSRP $22,242.00Surplus $3,487.09 -
Siemens MBKQJ1150 Molded Case Breakers (MCCBs)
MSRP $1,380.00Surplus $266.38SKU: C15-7485 Brand: Siemens MPN: MBKQJ1150 UPC: 78364309603 Shipping Weight: 5.55 lbs. Shipping Height: 7.00 In. Shipping Length: 11.00 In. Shipping Width: 6.00 In...- SKU:
- C15-7485
- TS PIK:
- 120152286
- Type:
- Main
- Interrupting Rating:
- 10 kA at 240 VAC
- Short Description:
- Mounting Kit for 240 V 150 A 10 kA 2-Pole QJ2/QR2 Panelboard Main Breaker
- Current Rating:
- 150 A
- Number of Poles:
- 2
- Series:
- MBK
- Voltage Rating:
- 240/480 V
- Catalog:
- SiemensAG_01822_1_CAT.pdf
- Country of Origin:
- Mexico
MSRP $1,380.00Surplus $266.38 -
Siemens MBKQJ1150HA Circuit Breaker Accessories
MSRP $2,609.00Surplus $649.29SKU: C15-7486 Brand: Siemens MPN: MBKQJ1150HA UPC: 88762179137 Shipping Weight: 6.50 lbs. Shipping Height: 9.00 In. Shipping Length: 15.00 In. Shipping Width: 11.00...- SKU:
- C15-7486
- Short Description:
- RP1 BREAKER KIT 1PH 240V 42kA QJ22B150H
- Country of Origin:
- Mexico
MSRP $2,609.00Surplus $649.29 -
Siemens MBKQJ3125A Miniature Circuit Breakers (MCBs)
MSRP $3,087.00Surplus $929.94SKU: 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 $3,087.00Surplus $929.94 -
Siemens MBKQJ3150 Molded Case Breakers (MCCBs)
MSRP $3,226.00Surplus $735.47SKU: C15-11537 Brand: Siemens MPN: MBKQJ3150 UPC: 78364309607 Shipping Weight: 7.75 lbs. Shipping Height: 7.00 In. Shipping Length: 11.00 In. Shipping Width: 6.00 In...- SKU:
- C15-11537
- TS PIK:
- 115585177
MSRP $3,226.00Surplus $735.47 -
Siemens MBKQJ3175 Molded Case Breakers (MCCBs)
MSRP $3,087.00Surplus $704.73SKU: E30-11705 Brand: Siemens MPN: MBKQJ3175 UPC: 78364310043 Shipping Weight: 7.45 lbs. Shipping Height: 7.00 In. Shipping Length: 11.00 In. Shipping Width: 6.00 In...- SKU:
- E30-11705
- TS PIK:
- 115459750
- Series:
- MBK
- Catalog:
- SiemensAG_01822_1_CAT.pdf
- Number of Poles:
- 3
- Current Rating:
- 175 A
- Voltage Rating:
- 240/480 V
- Type:
- Main
- Short Description:
- Mounting Kit for 240 V 175 A 10 kA 3-Pole QJ2/QR2 Panelboard Main Breaker
- Interrupting Rating:
- 10 kA at 240 VAC
- Country of Origin:
- Mexico
MSRP $3,087.00Surplus $704.73 -
Siemens MD62F800 Molded Case Breakers (MCCBs)
MSRP $7,789.00Surplus $1,548.42SKU: C15-7488 Brand: Siemens MPN: MD62F800 UPC: 78364321449 Shipping Weight: 45.05 lbs. Shipping Height: 10.00 In. Shipping Length: 17.00 In. Shipping Width: 13.00 In...- SKU:
- C15-7488
- TS PIK:
- 120152381
- Country of Origin:
- Mexico
MSRP $7,789.00Surplus $1,548.42 -
Siemens MD63F800 Molded Case Breakers (MCCBs) MD 3P 800A 600V 50/60Hz 3Ph
MSRP $6,952.00Surplus $3,374.21SKU: C15-1443 Brand: Siemens MPN: MD63F800 UPC: 783643214507 Shipping Weight: 48.50 lbs. Shipping Height: 10.00 In. Shipping Length: 19.00 In. Shipping Width: 12.00...- SKU:
- C15-1443
- Type:
- MD Frame
- Size:
- 16 Inch L x 9 Inch W x 6 Inch D
- Volts:
- 600 VAC/500 VDC
- Amps:
- 32 A
- Poles:
- 3
- Interrupting Rating:
- 65 kA at 240 VAC
- Interrupting Rating:
- 50 kA at 480 VAC
- Interrupting Rating:
- 25 kA at 600 VAC/500 VDC (UL)
- Interrupting Rating:
- 65 kA at 220/240 VAC
- Interrupting Rating:
- 40 kA at 380/415 VAC (IEC)
- Terminal Type:
- Line Lug
- Terminal Type:
- Load Lug
- Maximum AC Voltage Rating:
- 600 V
- Maximum DC Voltage Rating:
- 500 V
- Short Description:
- 600 VAC, 500 VDC, 500 to 800 A, 25 kA, 3-Pole, Molded Case, Thermal Magnetic, MD Frame
- Catalog:
- SiemensAG_00564_7_3-7_5_7_129_CAT.pdf
- Number of Poles:
- 3
- Current Rating:
- 800 A
- Voltage Rating:
- 600 VAC
- Frame Type:
- MD
- Country of Origin:
- Mexico
MSRP $6,952.00Surplus $3,374.21 -
Siemens MD63T500 Molded Case Breakers (MCCBs) EA
MSRP $10,500.00Surplus $2,817.46SKU: C15-10496 Brand: Siemens MPN: MD63T500 UPC: 78364321481 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10496
- TS PIK:
- 21367729
- Country of Origin:
- Mexico
MSRP $10,500.00Surplus $2,817.46 -
Siemens MP150 Miniature Circuit Breakers (MCBs)
MSRP $39.00Surplus $16.98Siemens MP150 Miniature Circuit Breakers (MCBs)​ ARCA SKU: C15-8240 Brand: Siemens MPN: MP150 UPC: 04089251900 Shipping Weight: 3.20 lbs. Shipping Height: 3.00 In. Shipping...- SKU:
- C15-8240
- TS PIK:
- 21261830
- Voltage Rating:
- 120 VAC
- Series:
- MP-T
- Size:
- 1 Inch W x 3 Inch D x 3 1/8 Inch H
- Short Description:
- 120 VAC, 50 A, 10 kA, 1-Pole, Plug-In Mount, MP-T Frame, Thermal Magnetic Trip Unit, Miniature Circuit Breaker
- Interrupting Rating:
- 10 kA
- Mounting:
- Plug-On
- Terminal Type:
- Load Lug
- Number of Poles:
- 1
- Installation/Operator:
- SiemensAG_00215_INST.pdf
- Current Rating:
- 50 A
- Used On:
- Loadcenter
- Wire Size:
- 8 to 6 AWG (Copper), 8 to 4 AWG (Aluminum)
- Data Sheet:
- SiemensAG_06584_1_DATA.pdf
- Country of Origin:
- Mexico
MSRP $39.00Surplus $16.98 -
Siemens MP215AFC Molded Case Breakers (MCCBs) MP-AT 2P 15A 240V 50/60Hz 1Ph
MSRP $411.50Surplus $57.36Siemens MP215AFC Molded Case Breakers (MCCBs) MP-AT 2P 15A 240V 50/60Hz 1Ph​ ARCA SKU: C15-1483 Brand: Siemens MPN: MP215AFC UPC: 040892148930 Shipping Weight: 0.72 Shipping Height: 3.50...- SKU:
- C15-1483
- Frame Type:
- BRkR
- Voltage Rating:
- 240 V
- Current Rating:
- 15 A
- Number of Poles:
- 2
- Interrupting Rating:
- 22kA at 240 VAC
- Short Description:
- BRKR MP-AT2 AFCI 2P 240V 15A 10KA
- Country of Origin:
- PHL
MSRP $411.50Surplus $57.36 -
Siemens MP220 Miniature Circuit Breakers (MCBs) MP 2P 20A 240V
MSRP $130.00Surplus $12.98Siemens MP220 Miniature Circuit Breakers (MCBs) MP 2P 20A 240V​ ARCA SKU: C15-3686 Brand: Siemens MPN: MP220 UPC: 040892518948 Shipping Weight: 0.55 Shipping Height: 2.00 In. Shipping...- SKU:
- C15-3686
- Series:
- Type MP-T
- Type:
- Common Trip
- Approval:
- UL
- Size:
- 2 Inch W x 3 Inch D x 3-1/8 Inch H
- Volts:
- 120/240 VAC
- Amps:
- 32 A
- Used On:
- Loadcenter
- Poles:
- 2
- Mounting:
- Plug-On
- Interrupting Rating:
- 10 kA
- Terminal Type:
- Load Lug
- Wire Size:
- 16 to 14 AWG (Aluminum/Copper)
- Short Description:
- 120/240 V, 20 A, 10 kA, 2-Pole, MP-T Frame
- Data Sheet:
- SiemensAG_01523_1_DATA.pdf
- Current Rating:
- 20 A
- Voltage Rating:
- 120/240 VAC
- Number of Poles:
- 2
- Country of Origin:
- Mexico
MSRP $130.00Surplus $12.98 -
Siemens MP240 Miniature Circuit Breakers (MCBs) MP 2P 40A 240V EA
MSRP $144.90Surplus $12.01Siemens MP240 Miniature Circuit Breakers (MCBs) MP 2P 40A 240V EA​ ARCA SKU: C15-2820 Brand: Siemens MPN: MP240 UPC: 040892518979 Shipping Weight: 0.60 Shipping Height: 2.00 In. Shipping...- SKU:
- C15-2820
- Series:
- MP-T
- Type:
- Common Trip
- Approval:
- UL
- Size:
- 2 Inch W x 3 Inch D x 3 1/8 Inch H
- Volts:
- 120/240 VAC
- Amps:
- 32 A
- Used On:
- Loadcenter
- Poles:
- 2
- Mounting:
- Plug-On
- Interrupting Rating:
- 10 kA
- Terminal Type:
- Load Lug
- Wire Size:
- 8 to 6 AWG (Copper)
- Wire Size:
- 8 to 4 AWG (Aluminum)
- Short Description:
- 120/240 V, 40 A, 10 kA, 2-Pole, Load Lug Terminal, MP-T Frame, Thermal Magnetic, Low Voltage, Miniature
- Data Sheet:
- SiemensAG_01525_1_DATA.pdf
- Current Rating:
- 40 A
- Number of Poles:
- 2
- Voltage Rating:
- 120/240 VAC
- Country of Origin:
- Mexico
MSRP $144.90Surplus $12.01 -
Siemens MQ130 Miniature Circuit Breakers (MCBs) MQ 1P 30A 120/240V 50/60Hz 1Ph
MSRP $66.60Surplus $4.40Siemens MQ130 Miniature Circuit Breakers (MCBs) MQ 1P 30A 120/240V 50/60Hz 1Ph​ ARCA SKU: C15-3141 Brand: Siemens MPN: MQ130 UPC: 040892528169 Shipping Weight: 0.25 Shipping Height: 1.00...- SKU:
- C15-3141
- Type:
- Common Trip
- Approval:
- UL
- Volts:
- 120 V
- Amps:
- 30 A
- Used On:
- Loadcenter
- Used On:
- Type QO Circuit Breaker
- Used On:
- Type QO Panelboard
- Poles:
- 1
- Mounting:
- Plug-On
- Interrupting Rating:
- 10 kA
- Short Description:
- 30 A, 10 kA, 1-Pole, 3/4" Format, MSQ Frame
- Data Sheet:
- SiemensAG_06677_1_DATA.pdf
- Voltage Rating:
- 120 VAC
- Number of Poles:
- 1
- Current Rating:
- 30 A
- Series:
- MSQ
- Country of Origin:
- Mexico
MSRP $66.60Surplus $4.40 -
Siemens MXD63S800A Molded Case Breakers (MCCBs)
MSRP $14,340.00Surplus $2,031.58SKU: C15-7489 Brand: Siemens MPN: MXD63S800A UPC: 78364321533 Shipping Weight: 59.15 lbs. Shipping Height: 10.00 In. Shipping Length: 16.00 In. Shipping Width: 13.00...- SKU:
- C15-7489
- TS PIK:
- 120152400
- Type:
- Molded Case, Low Vage, Magnetic Trip, Standard Breaking Capacity
- Interrupting Rating:
- 25 kA at 600 VAC/500 VDC
- Maximum DC Voltage Rating:
- 500 V
- Maximum AC Voltage Rating:
- 600 V
- Current Rating:
- 800 A
- Catalog:
- SiemensAG_09175_17_100_17_117_CAT.pdf
- Terminal Type:
- Not Included
- Voltage Rating:
- 600 VAC 50/60 Hertz, 500 VDC
- Installation/Operator:
- SiemensAG_00592_INST.pdf
- Number of Poles:
- 3
- Frame Type:
- MD
- Size:
- 9 Inch Width x 6 Inch Depth x 16 Inch Height
- Country of Origin:
- Mexico
MSRP $14,340.00Surplus $2,031.58