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 BQ2B070 Miniature Circuit Breakers (MCBs) 2P 70A 120V
MSRP $371.00Surplus $57.19Siemens BQ2B070 Miniature Circuit Breakers (MCBs) 2P 70A 120V​ ARCA SKU: C15-2269 Brand: Siemens MPN: BQ2B070 UPC: 78364310246 Shipping Weight: 0.63 lbs. Shipping Height: 2.00 In...- SKU:
- C15-2269
- Series:
- BQ
- Type:
- Molded Case
- Type:
- Thermal and Fixed Magnetic
- Type:
- Common Trip
- Approval:
- UL 489
- Approval:
- CSA C22.2
- Size:
- 2 Inch W x 3 Inch D x 4 Inch H
- Volts:
- 120/240 VAC at 50/60 Hz (UL)
- Amps:
- 32 A
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Poles:
- 2
- Interrupting Rating:
- 10 kA at 120/240 VAC Symmetrical (UL)
- Terminal Type:
- Load Lug
- Wire Size:
- 8 to 4 AWG (Copper)
- Wire Size:
- 8 to 2 AWG (Aluminum)
- Short Description:
- 120/240 VAC, 70 A, 10 kA, 2-Pole, Load Lug Terminal, BQ Frame, Bolt-On, Common Trip
- Catalog:
- SiemensAG_01698_17_1_17_7_CAT.pdf
- Data Sheet:
- SiemensAG_05380_1_DATA.pdf
- TS PIK:
- 21366182
- Voltage Rating:
- 120/240 VAC
- Current Rating:
- 70 A
- Number of Poles:
- 2
- Mounting:
- Bolt-On
- Country of Origin:
- Mexico
MSRP $371.00Surplus $57.19 -
Siemens BQ2B080 Miniature Circuit Breakers (MCBs)
MSRP $503.00Surplus $71.81Siemens BQ2B080 Miniature Circuit Breakers (MCBs)​ ARCA SKU: C15-8750 Brand: Siemens MPN: BQ2B080 UPC: 78364316123 Shipping Weight: 0.65 lbs. Shipping Height: 2.00 In. Shipping...- SKU:
- C15-8750
- TS PIK:
- 115270502
- Terminal Type:
- Load Lug
- Catalog:
- SiemensAG_01698_17_1_17_7_CAT.pdf
- Data Sheet:
- SiemensAG_05381_1_DATA.pdf
- Series:
- BQ
- Short Description:
- 120/240 VAC, 80 A, 10 kA, 2-Pole, Load Lug Terminal, BQ Frame, Bolt-On, Common Trip, Molded Case Circuit Breaker
- Type:
- Molded Case, Thermal and Fixed Magnetic, Common Trip
- Size:
- 2 Inch W x 3 Inch D x 4 Inch H
- Voltage Rating:
- 120/240 VAC
- Number of Poles:
- 2
- Interrupting Rating:
- 10 kA at 120/240 VAC Symmetrical (UL)
- Current Rating:
- 80 A
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Wire Size:
- 4 to 1/0 AWG (Copper), 2 to 1/0 AWG (Aluminum)
- Country of Origin:
- Mexico
MSRP $503.00Surplus $71.81 -
Siemens BQ2B090 Miniature Circuit Breakers (MCBs) 2P 90A 120V
MSRP $503.00Surplus $63.38Siemens BQ2B090 Miniature Circuit Breakers (MCBs) 2P 90A 120V​ ARCA SKU: C15-6134 Brand: Siemens MPN: BQ2B090 UPC: 78364310247 Shipping Weight: 0.65 lbs. Shipping Height: 2.00 In...- SKU:
- C15-6134
- TS PIK:
- 119226720
- Series:
- BQ
- Type:
- Molded Case, Thermal and Fixed Magnetic, Common Trip
- Terminal Type:
- Load Lug
- Current Rating:
- 90 A
- Short Description:
- 120/240 VAC, 90 A, 10 kA, 2-Pole, Load Lug Terminal, BQ Frame, Bolt-On, Common Trip, Molded Case Circuit Breaker
- Number of Poles:
- 2
- Voltage Rating:
- 120/240 VAC
- Size:
- 2 Inch W x 3 Inch D x 4 Inch H
- Catalog:
- SiemensAG_01698_17_1_17_7_CAT.pdf
- Interrupting Rating:
- 10 kA at 120/240 VAC Symmetrical (UL)
- Wire Size:
- 4 to 1/0 AWG (Copper), 2 to 1/0 AWG (Aluminum)
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Data Sheet:
- SiemensAG_05382_1_DATA.pdf
- Country of Origin:
- Mexico
MSRP $503.00Surplus $63.38 -
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Siemens BQ2B100 Miniature Circuit Breakers (MCBs) EA
MSRP $534.00Surplus $167.35SKU: C15-10363 Brand: Siemens MPN: BQ2B100 UPC: 78364310248 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10363
- TS PIK:
- 21366184
- Type:
- Molded Case, Thermal and Fixed Magnetic Trip, Common Trip
- Terminal Type:
- Load Lug
- Voltage Rating:
- 120/240 VAC at 50/60 Hz (UL)
- Number of Poles:
- 2
- Interrupting Rating:
- 10 kA at 120/240 VAC Symmetrical (UL)
- Mounting:
- Bolt-On
- Size:
- 2 Inch W x 3 Inch D x 4 Inch H
- Wire Size:
- 4 to 1/0 AWG (Copper), 2 to 1/0 AWG (Aluminum)
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Series:
- BQ
- Catalog:
- SiemensAG_01502_1_15_5_9_5_24_CAT.pdf
- Short Description:
- 120/240 VAC 50/60 Hz, 100 A, 10 kA, 2-Pole, Line and Load Side Lug/Bolt-On Terminal, BQ Frame, Molded Case, Thermal and Fixed Magnetic Trip, Low Vage, Common Trip, Circuit Breaker
- Current Rating:
- 100 A
- Country of Origin:
- Mexico
MSRP $534.00Surplus $167.35 -
Siemens BQ2B125 Miniature Circuit Breakers (MCBs)
MSRP $1,053.00Surplus $136.72SKU: 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
MSRP $1,053.00Surplus $136.72 -
Siemens BQ2S060 Molded Case Breakers (MCCBs) 2P 60A 120V
MSRP $192.50Surplus $39.17Siemens BQ2S060 Molded Case Breakers (MCCBs) 2P 60A 120V​ ARCA SKU: C15-6135 Brand: Siemens MPN: BQ2S060 UPC: 78364316122 Shipping Weight: 0.65 lbs. Shipping Height: 2.00 In...- SKU:
- C15-6135
- TS PIK:
- 118287780
- Short Description:
- CIRCUIT BREAKER 60A 2P BQ MOLDED CASE
- Number of Poles:
- 2
- Country of Origin:
- Mexico
MSRP $192.50Surplus $39.17 -
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Siemens BQ3-B030 Miniature Circuit Breakers (MCBs) 3P 30A 240V
MSRP $685.93Surplus $171.48Siemens BQ3-B030 Miniature Circuit Breakers (MCBs) 3P 30A 240V​ ARCA SKU: C15-6140 Brand: Siemens MPN: BQ3-B030 UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping...- SKU:
- C15-6140
MSRP $685.93Surplus $171.48 -
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Siemens BQ3-B050 Miniature Circuit Breakers (MCBs) 3P 50A 240V
MSRP $307.70Surplus $100.81Siemens BQ3-B050 Miniature Circuit Breakers (MCBs) 3P 50A 240V​ ARCA SKU: C15-6257 Brand: Siemens MPN: BQ3-B050 UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping...- SKU:
- C15-6257
- Number of Poles:
- 3
MSRP $307.70Surplus $100.81 -
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Siemens BQ3-B060 Miniature Circuit Breakers (MCBs)
MSRP $200.00Surplus $149.95Siemens BQ3-B060 Miniature Circuit Breakers (MCBs)​ ARCA SKU: C15-8494 Brand: Siemens MPN: BQ3-B060 UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping...- SKU:
- C15-8494
MSRP $200.00Surplus $149.95 -
Siemens BQ3-B070 Miniature Circuit Breakers (MCBs) 3P 70A 240V
MSRP $839.75Surplus $173.10Siemens BQ3-B070 Miniature Circuit Breakers (MCBs) 3P 70A 240V​ ARCA SKU: C15-6145 Brand: Siemens MPN: BQ3-B070 UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping...- SKU:
- C15-6145
- Country of Origin:
- Mexico
MSRP $839.75Surplus $173.10 -
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Siemens BQ3-B100 Miniature Circuit Breakers (MCBs)
MSRP $300.00Surplus $183.28SKU: C15-8466 Brand: Siemens MPN: BQ3-B100 UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In. Product...- SKU:
- C15-8466
MSRP $300.00Surplus $183.28 -
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Siemens BQ3B015 Miniature Circuit Breakers (MCBs) 3P 15A 240V
MSRP $627.00Surplus $244.12SKU: C15-6138 Brand: Siemens MPN: BQ3B015 UPC: 78364310258 Shipping Weight: 1.00 lbs. Shipping Height: 3.00 In. Shipping Length: 4.00 In. Shipping Width: 3.00 In...- SKU:
- C15-6138
- TS PIK:
- 126961886
- Short Description:
- 240 VAC, 15 A, 10 kA, 3-Pole, Load Lug Terminal, BQ Frame, Bolt-On, Common Trip, Molded Case Circuit Breaker
- Type:
- Molded Case, Thermal and Fixed Magnetic Trip, Low Vage, Common Trip
- Voltage Rating:
- 240 V AC 50/60 Hertz
- Number of Poles:
- 3
- Current Rating:
- 15 A
- Size:
- 3 Inch Width x 2.37 Inch Depth x 3.75 Inch Height
- Interrupting Rating:
- 10 kA
- Catalog:
- SiemensAG_01698_17_1_17_7_17_110_CAT.pdf
- Data Sheet:
- SiemensAG_05387_1_DATA.pdf
- Series:
- BQ
- Terminal Type:
- Load Side Lug, Bolt-On
MSRP $627.00Surplus $244.12 -
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Siemens BQ3B020 Miniature Circuit Breakers (MCBs) EA
MSRP $627.00Surplus $136.99SKU: C15-8429 Brand: Siemens MPN: BQ3B020 UPC: 78364310259 Shipping Weight: 0.95 lbs. Shipping Height: 3.00 In. Shipping Length: 3.00 In. Shipping Width: 4.00 In...- SKU:
- C15-8429
- Terminal Type:
- Load Lug
- Voltage Rating:
- 240 VAC at 50/60 Hz (UL)
- Type:
- Molded Case, Thermal and Fixed Magnetic, Common Trip
- Short Description:
- 240 VAC, 20 A, 10 kA, 3-Pole, Load Lug Terminal, BQ Frame, Bolt-On, Common Trip, Molded Case Circuit Breaker
- Series:
- BQ
- Number of Poles:
- 3
- Interrupting Rating:
- 10 kA at 240 VAC Symmetrical (UL)
- Catalog:
- SiemensAG_01698_17_1_17_7_17_110_CAT.pdf
- Size:
- 3 Inch W x 3 Inch D x 3-3/4 Inch H
- Data Sheet:
- SiemensAG_05388_1_DATA.pdf
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Wire Size:
- 14 to 10 AWG (Copper), 12 to 10 AWG (Aluminum)
- Current Rating:
- 20 A
- Mounting:
- Bolt-On
- Country of Origin:
- Mexico
MSRP $627.00Surplus $136.99 -
Siemens BQ3B025 Miniature Circuit Breakers (MCBs) 3P 25A 240V
MSRP $627.00Surplus $97.22Siemens BQ3B025 Miniature Circuit Breakers (MCBs) 3P 25A 240V​ ARCA SKU: C15-6255 Brand: Siemens MPN: BQ3B025 UPC: 78364316125 Shipping Weight: 1.00 lbs. Shipping Height: 3.00 In...- SKU:
- C15-6255
- TS PIK:
- 21367155
- Number of Poles:
- 3
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Interrupting Rating:
- 10 kA at 240 VAC Symmetrical (UL)
- Current Rating:
- 25 A
- Size:
- 3 Inch W x 3 Inch D x 3-3/4 Inch H
- Terminal Type:
- Load Lug
- Data Sheet:
- SiemensAG_01610_1_DATA.pdf
- Voltage Rating:
- 240 VAC at 50/60 Hz (UL)
- Type:
- Molded Case, Thermal and Fixed Magnetic, Common Trip
- Series:
- BQ
- Wire Size:
- 14 to 6 AWG (Copper), 12 to 6 AWG (Aluminum)
- Catalog:
- SiemensAG_00876_5_18_5_24_CAT.pdf
- Short Description:
- 240 VAC, 25 A, 10 kA Interrupt, 3-Pole, BQ-Frame, Load Lug Terminal, Bolt-On Mount, Thermal Magnetic, Common Trip, Molded Case Circuit Breaker
- Country of Origin:
- Mexico
MSRP $627.00Surplus $97.22 -
Siemens BQ3B025H Miniature Circuit Breakers (MCBs) 3P 25A 240V
MSRP $933.00Surplus $161.01SKU: C15-6139 Brand: Siemens MPN: BQ3B025H UPC: 78364308838 Shipping Weight: 1.00 lbs. Shipping Height: 3.00 In. Shipping Length: 5.00 In. Shipping Width: 30.00 In...- SKU:
- C15-6139
- TS PIK:
- 21368415
- Short Description:
- BRKR BQH 3P 240V 25A 22K
- Number of Poles:
- 3
- Country of Origin:
- Mexico
MSRP $933.00Surplus $161.01 -
Siemens BQ3B030H Miniature Circuit Breakers (MCBs) 3P 30A 240V
MSRP $933.00Surplus $149.61Siemens BQ3B030H Miniature Circuit Breakers (MCBs) 3P 30A 240V​ ARCA SKU: C15-6141 Brand: Siemens MPN: BQ3B030H UPC: 78364316169 Shipping Weight: 0.95 lbs. Shipping Height: 3.00 In...- SKU:
- C15-6141
- TS PIK:
- 21368391
- Type:
- Molded Case, Low Vage, Common Trip, Circuit Protector
- Current Rating:
- 30 A
- Terminal Type:
- Load Lug
- Size:
- 3 Inch Width x 3 Inch Depth x 4 Inch Height
- Number of Poles:
- 3
- Catalog:
- SiemensAG_09175_0_8_17_1_17_7_17_8_17_133_CAT.pdf
- Interrupting Rating:
- 22 kA
- Data Sheet:
- SiemensAG_09561_1_2_DATA.pdf
- Voltage Rating:
- 240 VAC
- Country of Origin:
- Mexico
MSRP $933.00Surplus $149.61 -
Siemens BQ3B035 Miniature Circuit Breakers (MCBs) 3P 35A 240V
MSRP $627.00Surplus $110.56SKU: C15-6234 Brand: Siemens MPN: BQ3B035 UPC: 78364316126 Shipping Weight: 1.05 lbs. Shipping Height: 3.00 In. Shipping Length: 5.00 In. Shipping Width: 3.00 In...- SKU:
- C15-6234
- TS PIK:
- 117094914
- Wire Size:
- 14 to 6 AWG (Copper), 12 to 6 AWG (Aluminum)
- Interrupting Rating:
- 10 kA at 240 VAC Symmetrical (UL)
- Terminal Type:
- Load Lug
- Series:
- BQ
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Short Description:
- 240 VAC, 35 A, 10 kA, 3-Pole, Load Lug Terminal, BQ Frame, Bolt-On, Common Trip, Molded Case Circuit Breaker
- Voltage Rating:
- 240 VAC at 50/60 Hz (UL)
- Catalog:
- SiemensAG_01698_17_1_17_7_CAT.pdf
- Number of Poles:
- 3
- Type:
- Molded Case, Thermal and Fixed Magnetic, Common Trip
- Data Sheet:
- SiemensAG_05393_1_DATA.pdf
- Size:
- 3 Inch W x 3 Inch D x 3-3/4 Inch H
- Current Rating:
- 35 A
- Mounting:
- Bolt-On
- Country of Origin:
- Mexico
MSRP $627.00Surplus $110.56 -
Siemens BQ3B040 Miniature Circuit Breakers (MCBs) BQ 3P 40A 240V EA
MSRP $295.00Surplus $34.20Siemens BQ3B040 Miniature Circuit Breakers (MCBs) BQ 3P 40A 240V EA​ ARCA SKU: C15-2268 Brand: Siemens MPN: BQ3B040 UPC: 783643102613 Shipping Weight: 1.05 lbs. Shipping Height: 3.00...- SKU:
- C15-2268
- Series:
- BQ
- Type:
- Molded Case
- Type:
- Thermal Magnetic
- Type:
- Common Trip
- Approval:
- UL 489
- Size:
- 4.7 Inch Width x 12.7 Inch Depth x 3.7 Inch Height
- Volts:
- 240 VAC
- Amps:
- 32 A
- Poles:
- 3
- Mounting:
- Bolt-On
- Interrupting Rating:
- 10 kA
- Terminal Type:
- Lug-In/Lug-Out with Insta-Wire
- Short Description:
- 240 VAC, 50 A, 10 kA Interrupt, 3-Pole, BQ-Frame, Load Lug Terminal, Bolt-On Mount, Thermal Magnetic, Common Trip
- Catalog:
- SiemensAG_00876_1_5_5_18_5_24_CAT.pdf
- Data Sheet:
- SiemensAG_01611_1_DATA.pdf
- TS PIK:
- 21366197
- Current Rating:
- 40 A
- Voltage Rating:
- 240 VAC
- Number of Poles:
- 3
- Country of Origin:
- Mexico
MSRP $295.00Surplus $34.20 -
Siemens BQ3B045 Miniature Circuit Breakers (MCBs) 3P 45A 240V EA
MSRP $614.00Surplus $95.36Siemens 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
MSRP $614.00Surplus $95.36 -
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Siemens BQ3B050H Miniature Circuit Breakers (MCBs) 3P 50A 240
MSRP $914.00Surplus $295.34SKU: C15-6143 Brand: Siemens MPN: BQ3B050H UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In. Product...- SKU:
- C15-6143
- TS PIK:
- 111063559
- Wire Size:
- 8 to 6 AWG (Copper), 8 to 4 AWG (Aluminum)
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Data Sheet:
- SiemensAG_05398_1_DATA.pdf
- Catalog:
- SiemensAG_01698_17_1_17_7_CAT.pdf
- Size:
- 3 Inch W x 3 Inch D x 3-3/4 Inch H
- Type:
- Molded Case, Thermal and Fixed Magnetic, Common Trip
- Short Description:
- 240 VAC, 50 A, 22 kA, 3-Pole, Load Lug Terminal, BQH Frame, Bolt-On, Common Trip, Molded Case Circuit Breaker
- Series:
- BQH
- Terminal Type:
- Load Lug
- Number of Poles:
- 3
- Voltage Rating:
- 240 VAC at 50/60 Hz (UL)
- Current Rating:
- 50 A
- Interrupting Rating:
- 22 kA at 240 VAC Symmetrical (UL)
MSRP $914.00Surplus $295.34
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