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 B345 Miniature Circuit Breakers (MCBs) B 3P 45A 240V 50/60Hz 3Ph
MSRP $520.00Surplus $63.48Siemens 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 $520.00Surplus $63.48 -
Siemens B345HH Miniature Circuit Breakers (MCBs)
MSRP $1,443.00Surplus $195.00SKU: 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 $1,443.00Surplus $195.00 -
Siemens BQ2B045 Miniature Circuit Breakers (MCBs) 2P 45A 120V
MSRP $192.50Surplus $40.95Siemens 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 $192.50Surplus $40.95 -
Siemens BQ3B045 Miniature Circuit Breakers (MCBs) 3P 45A 240V EA
MSRP $614.00Surplus $62.42Siemens 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 $614.00Surplus $62.42
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