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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- Qty in Cart
- Price
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Siemens ED63B045 Molded Case Breakers (MCCBs)
MSRP $3,306.60Surplus $756.54SKU: C15-7429 Brand: Siemens MPN: ED63B045 UPC: 78364320972 Shipping Weight: 3.70 lbs. Shipping Height: 4.00 In. Shipping Length: 8.00 In. Shipping Width: 6.00 In...- SKU:
- C15-7429
- TS PIK:
- 115676270
- Series:
- ED6
- Number of Poles:
- 3
- Installation/Operator:
- SiemensAG_00313_INST.pdf
- Voltage Rating:
- 600 VAC, 500 VDC
- Type:
- Thermal Magnetic
- Terminal Type:
- Load Lug
- Catalog:
- SiemensAG_01698_17_78-17_80_CAT.pdf
- Size:
- 3 Inch Width x 4.56 Inch Depth x 6.35 Inch Height
- Frame Type:
- ED
- Current Rating:
- 45 A
- Short Description:
- 600 VAC 50/60 Hz, 500 VDC, 45 A at 40 Deg C, 18/25 kA, 3-Pole, 10 to 1/0 AWG Copper/Aluminum, Load Lug Terminal, ED Frame, Thermal Magnetic Trip Unit, Molded Case Circuit Breaker
- 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)
- Country of Origin:
- Mexico
- Approval:
- UL 489, IEC
MSRP $3,306.60Surplus $756.54 -
Siemens BQD145 Miniature Circuit Breakers (MCBs) 1P 45A 277V
MSRP $416.56Surplus $99.55Siemens BQD145 Miniature Circuit Breakers (MCBs) 1P 45A 277V​ ARCA SKU: C15-6153 Brand: Siemens MPN: BQD145 UPC: 78364327714 Shipping Weight: 0.55 lbs. Shipping Height: 4.00 In...- SKU:
- C15-6153
- TS PIK:
- 21366723
- Current Rating:
- 45 A
- Voltage Rating:
- 277 VAC at 50/60 Hz, 125 VDC (UL)
- Series:
- BQD
- Type:
- Branch, Molded Case, Thermal and Fixed Magnetic
- Short Description:
- 277 VAC, 45 A, 14 kA, 1-Pole, Low-Tab Mount, Molded Case, Thermal Magnetic Trip Unit, Branch, Panelboard Circuit Breaker
- Number of Poles:
- 1
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Catalog:
- SiemensAG_00565_11_16_CAT.pdf
- Interrupting Rating:
- 14 kA at 277 VAC/125 VDC (UL)
- Data Sheet:
- SiemensAG_05417_1_DATA.pdf
- Installation/Operator:
- SiemensAG_00221_INST.pdf
- Country of Origin:
- Mexico
- Approval:
- UL
- Installation:
- Bolt-On
- Application:
- Lighting, Distribution
MSRP $416.56Surplus $99.55 -
Siemens BQD345 Miniature Circuit Breakers (MCBs) 3P 45A 277V
MSRP $1,636.28Surplus $459.87Siemens BQD345 Miniature Circuit Breakers (MCBs) 3P 45A 277V​ ARCA SKU: C15-3566 Brand: Siemens MPN: BQD345 UPC: 78364327740 Shipping Weight: 1.70 lbs. Shipping Height: 3.00 In...- SKU:
- C15-3566
- Series:
- BQD
- Type:
- Branch
- Type:
- Molded Case
- Type:
- Thermal and Fixed Magnetic
- Approval:
- UL
- Volts:
- 480 Star/277 VAC at 50/60 Hz (UL)
- Amps:
- 32 A
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Poles:
- 3
- Interrupting Rating:
- 14 kA at 480 Star/277 VAC (UL)
- Application:
- Lighting
- Application:
- Distribution
- Installation:
- Bolt-On
- Short Description:
- 480 VAC Star/277 VAC, 45 A, 14 kA, 3-Pole, Low-Tab Mount, Molded Case, Thermal Magnetic Trip Unit, Branch
- Catalog:
- SiemensAG_00565_11_16_CAT.pdf
- Data Sheet:
- SiemensAG_05440_1_DATA.pdf
- Installation/Operator:
- SiemensAG_00221_INST.pdf
- TS PIK:
- 21368658
- Number of Poles:
- 3
- Current Rating:
- 45 A
- Voltage Rating:
- 480 Star/277 VAC at 50/60 Hz (UL)
- Country of Origin:
- Mexico
MSRP $1,636.28Surplus $459.87 -
Siemens B245H Miniature Circuit Breakers (MCBs) 2P 45A 120V
MSRP $514.57Surplus $123.12Siemens B245H Miniature Circuit Breakers (MCBs) 2P 45A 120V​ ARCA SKU: C15-6241 Brand: Siemens MPN: B245H UPC: 78364300092 Shipping Weight: 0.65 lbs. Shipping Height: 2.00 In...- SKU:
- C15-6241
- TS PIK:
- 115704594
- Short Description:
- 120/240 VAC, 45 A, 22 kA, 2-Pole, Bolt-On Mount, Molded Case, Common Trip, Panelboard Circuit Breaker
- Interrupting Rating:
- 22 kA
- Catalog:
- SiemensAG_00564_7_29_CAT.pdf
- Number of Poles:
- 2
- Type:
- Branch
- Used On:
- P1/P2/P3/P4/P5 Series Panelboard
- Data Sheet:
- SiemensAG_05211_1_DATA.pdf
- Voltage Rating:
- 120/240 VAC
- Installation/Operator:
- SiemensAG_00215_INST.pdf
- Current Rating:
- 45 A
- Country of Origin:
- Mexico
- Application:
- Lighting/Distribution
- Approval:
- UL 489, CSA C22.2
- Installation:
- Bolt-On
MSRP $514.57Surplus $123.12 -
Siemens B245HH Miniature Circuit Breakers (MCBs) Type BL 2P 45A 120V 50/60Hz
MSRP $784.11Surplus $259.19SKU: C15-1461 Brand: Siemens MPN: B245HH UPC: 783643512887 Shipping Weight: 0.72 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-1461
- Application:
- Lighting
- Application:
- Distribution
- Approval:
- UL 489
- Approval:
- CSA C22.2
- Amps:
- 45 A
- Installation:
- Bolt-On
- Interrupting Rating:
- 65 kA at 120/240 VAC
- Poles:
- 2
- Type:
- Molded Case
- Used On:
- Panelboard
- Volts:
- 120/240 VAC
- Data Sheet:
- SiemensAG_09773_1_2_DATA.pdf
- Installation/Operator:
- SiemensAG_00053_INST.pdf
- Number of Poles:
- 2
- Voltage Rating:
- 120/240 VAC
- Catalog:
- SiemensAG_01829_5_21_10_16_CAT.pdf
- Current Rating:
- 45 A
- Short Description:
- BREAKER 45A 2P 120/240V 65K HBL
- Country of Origin:
- Mexico
MSRP $784.11Surplus $259.19 -
Siemens B345 Miniature Circuit Breakers (MCBs) B 3P 45A 240V 50/60Hz 3Ph
MSRP $707.88Surplus $86.42Siemens B345 Miniature Circuit Breakers (MCBs) B 3P 45A 240V 50/60Hz 3Ph​ ARCA SKU: C15-2568 Brand: Siemens MPN: B345 UPC: 783643263741 Shipping Weight: 0.95 lbs. Shipping Height: 3...- SKU:
- C15-2568
- Type:
- Electronic
- Type:
- Thermal
- Approval:
- UL 489
- Approval:
- CSA C22.2
- Volts:
- 240 VAC at 50/60 Hertz (UL)
- Amps:
- 32 A
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Poles:
- 3
- Interrupting Rating:
- 10 kA at 240 VAC (UL)
- Enclosure:
- IP20
- Application:
- Lighting
- Application:
- Distribution
- Installation:
- Bolt-On
- Short Description:
- 240 VAC, 45 A, 10 kA, 3-Pole, Bolt-On Mount, Molded Case, Common Trip, Thermal Magnetic Trip Unit, Branch
- Catalog:
- SiemensAG_00564_7_29_CAT.pdf
- Data Sheet:
- Eaton_41036_1-6_DATA.pdf
- Number of Poles:
- 3
- Installation/Operator:
- SiemensAG_00215_INST.pdf
- Voltage Rating:
- 240 VAC
- Current Rating:
- 45 A
- Mounting:
- Bolt-On
- Series:
- B
- Country of Origin:
- Mexico
MSRP $707.88Surplus $86.42 -
Siemens B345HH Miniature Circuit Breakers (MCBs)
MSRP $1,964.36Surplus $265.45SKU: C15-7398 Brand: Siemens MPN: B345HH UPC: 78364330636 Shipping Weight: 0.95 lbs. Shipping Height: 3.00 In. Shipping Length: 4.00 In. Shipping Width: 3.00 In...- SKU:
- C15-7398
- TS PIK:
- 106248797
- Short Description:
- 240 VAC, 45 A, 65 kA, 3-Pole, Bolt-On Mount, Molded Case, Common Trip, Thermal Magnetic Trip Unit, Panelboard Circuit Breaker
- Number of Poles:
- 3
- Catalog:
- SiemensAG_00564_7_29_CAT.pdf
- Type:
- Branch
- Installation/Operator:
- SiemensAG_00215_INST.pdf
- Data Sheet:
- SiemensAG_05263_1_DATA.pdf
- Voltage Rating:
- 240 VAC at 50/60 Hz
- Interrupting Rating:
- 65 kA
- Used On:
- P1/P2/P3/P4/P5 Series Panelboard
- Current Rating:
- 45 A
- Mounting:
- Bolt-On
- Country of Origin:
- Mexico
- Approval:
- UL 489, CSA C22.2
- Application:
- Lighting/Distribution
- Installation:
- Bolt-On
MSRP $1,964.36Surplus $265.45 -
Siemens BQ2B045 Miniature Circuit Breakers (MCBs) 2P 45A 120V
MSRP $262.05Surplus $55.75Siemens BQ2B045 Miniature Circuit Breakers (MCBs) 2P 45A 120V​ ARCA SKU: C15-6254 Brand: Siemens MPN: BQ2B045 UPC: 78364316121 Shipping Weight: 0.70 lbs. Shipping Height: 3.00 In...- SKU:
- C15-6254
- TS PIK:
- 126638515
- Short Description:
- 120/240 VAC, 45 A, 10 kA, 2-Pole, Load Lug Terminal, BQ Frame, Bolt-On, Common Trip, Molded Case Circuit Breaker
- Current Rating:
- 45 A
- Size:
- 2 Inch W x 3 Inch D x 3-3/4 Inch H
- Catalog:
- SiemensAG_01698_17_1_17_7_CAT.pdf
- Series:
- BQ
- Number of Poles:
- 2
- Voltage Rating:
- 120/240 VAC at 50/60 Hz (UL)
- Interrupting Rating:
- 10 kA at 120/240 VAC
- Terminal Type:
- P1/P2/P3/P4/P5 Panelboard
- Data Sheet:
- SiemensAG_05372_1_DATA.pdf
- Mounting:
- Bolt-On
- Country of Origin:
- Mexico
- Frame Type:
- QD
MSRP $262.05Surplus $55.75 -
Siemens BQ3B045 Miniature Circuit Breakers (MCBs) 3P 45A 240V EA
MSRP $835.84Surplus $169.89Siemens BQ3B045 Miniature Circuit Breakers (MCBs) 3P 45A 240V EA​ ARCA SKU: C15-6256 Brand: Siemens MPN: BQ3B045 UPC: Shipping Weight: 1.00 lbs. Shipping Height: 3.00 In. Shipping...- SKU:
- C15-6256
- TS PIK:
- 124364579
- Short Description:
- 240 VAC, 45 A, 10 kA, 3-Pole, Load Lug Terminal, BQ Frame, Bolt-On, Common Trip, Molded Case Circuit Breaker
- Series:
- BQ
- Terminal Type:
- Load Lug
- Number of Poles:
- 3
- Current Rating:
- 45 A
- Interrupting Rating:
- 10 kA at 240 VAC Symmetrical (UL)
- Size:
- 3 Inch W x 3 Inch D x 3-3/4 Inch H
- Data Sheet:
- SiemensAG_05396_1_DATA.pdf
- Catalog:
- SiemensAG_01698_17_1_17_7_CAT.pdf
- Wire Size:
- 8 to 6 AWG (Copper), 8 to 4 AWG (Aluminum)
- Voltage Rating:
- 240 VAC at 50/60 Hz (UL)
- Type:
- Molded Case, Thermal and Fixed Magnetic, Common Trip
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Mounting:
- Bolt-On
- Country of Origin:
- Mexico
- Approval:
- UL
MSRP $835.84Surplus $169.89 -
Siemens ED41B045 Molded Case Breakers (MCCBs)
MSRP $315.82Surplus $210.02SKU: C15-10386 Brand: Siemens MPN: ED41B045 UPC: 78364320914 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10386
- TS PIK:
- 21367353
- Catalog:
- SiemensAG_09175_17_1_17_4_17_81-17_84_17_112_17_113_17_123_17_133_CAT.pdf
- Voltage Rating:
- 120/277 VAC 50/60 Hertz, 125 VDC
- Frame Type:
- ED
- Interrupting Rating:
- 65 kA at 120 VAC, 22 kA at 277 VAC, 30 kA at 125 VDC
- Number of Poles:
- 1
- Type:
- Molded Case, Low Vage, Thermal Magnetic, Standard Rating
- Country of Origin:
- MEX
- Size:
- 1 Inch Width x 3.92 Inch Depth x 6.35 Inch Height
- Approval:
- UL 489
- Maximum DC Voltage Rating:
- 125 V
- Terminal Type:
- Load Lug
- Installation/Operator:
- SiemensAG_00593_INST.pdf
- Maximum AC Voltage Rating:
- 277 V
- Current Rating:
- 45 A
- Short Description:
- BRKR ED4 1P 480V 45A
MSRP $315.82Surplus $210.02 -
Siemens HED43B045L Molded Case Breakers (MCCBs)
MSRP $4,827.17Surplus $888.29SKU: C15-7664 Brand: Siemens MPN: HED43B045L UPC: 78364323645 Shipping Weight: 3.75 lbs. Shipping Height: 4.00 In. Shipping Length: 7.00 In. Shipping Width: 6.00 In...- SKU:
- C15-7664
- TS PIK:
- 115558254
- Current Rating:
- 45 A
- Frame Type:
- ED
- Catalog:
- SiemensAG_09175_17_1_17_4_17_81-17_84_17_112_17_113_17_123_17_133_CAT.pdf
- Number of Poles:
- 3
- Installation/Operator:
- SiemensAG_00593_INST.pdf
- Type:
- Molded Case, Low Vage, Thermal Magnetic, High IC Rating
- Interrupting Rating:
- 42 kA at 480 VAC
- Terminal Type:
- Line and Load Lug
- Maximum AC Voltage Rating:
- 480 V
- Voltage Rating:
- 480 VAC 50/60 Hertz
- Size:
- 3 Inch Width x 3.92 Inch Depth x 6.35 Inch Height
- Short Description:
- BRKR HED4 3P 480V 45A LUG
- Country of Origin:
- Mexico
- Approval:
- UL 489
MSRP $4,827.17Surplus $888.29 -
Siemens LGB3B045B Molded Case Breakers (MCCBs)
MSRP $4,356.16Surplus $1,222.18SKU: C15-10482 Brand: Siemens MPN: LGB3B045B UPC: 88762122027 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10482
- TS PIK:
- 125266291
- Type:
- Molded Case, Low Vage, Thermal and Fixed Magnetic, Very High Breaking Capacity
- Voltage Rating:
- 600 Star/347 VAC 50/60 Hertz
- Catalog:
- SiemensAG_01796_7_7_7_33_CAT.pdf
- Current Rating:
- 45 A
- Number of Poles:
- 3
- Interrupting Rating:
- 14 kA at 600 Star/347 VAC
- Country of Origin:
- Mexico
- Approval:
- UL 489
- Application:
- Lighting, Distribution
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Short Description:
- BRKR LGB 45A 3P 480Y 65K LD LUG
MSRP $4,356.16Surplus $1,222.18 -
Siemens Q245 Miniature Circuit Breakers (MCBs)
MSRP $124.56Surplus $36.29SKU: C15-6274 Brand: Siemens MPN: Q245 UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In. Product...- SKU:
- C15-6274
- TS PIK:
- 121449811
- Number of Poles:
- 2
- Current Rating:
- 45 A
- Used On:
- Load Center
- Mounting:
- Plug-On
- Series:
- Q
- Voltage Rating:
- 120/240 VAC
- Interrupting Rating:
- 10 kA
- Size:
- 3 Inch Width x 3 Inch Depth x 2 Inch Height
- Short Description:
- 120/240 VAC, 45 A, 10 kA Interrupt Rating, 2-Pole, Plug-On, Type QP, Circuit Breaker
- Data Sheet:
- Siemens_02206_1_DATA.pdf
- Country of Origin:
- Mexico
- Approval:
- UL 489
MSRP $124.56Surplus $36.29
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