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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Murray MP320 Miniature Circuit Breakers (MCBs) 3P 20A 50/60Hz 3Ph EA
MSRP $697.12Surplus $67.33Murray MP320 Miniature Circuit Breakers (MCBs) 3P 20A 50/60Hz 3Ph EA​ ARCA SKU: C15-6310 Brand: Murray MPN: MP320 UPC: 30040892237802 Shipping Weight: 2.90 lbs. Shipping Height: 3.00...- SKU:
- C15-6310
- Short Description:
- 240 VAC, 20 A, 10 kA, 3-Pole, Plug-In Mount, MP-T Frame, Thermal Magnetic Trip Unit, Miniature Circuit Breaker
- Size:
- 3 Inch W x 3 Inch D x 3 1/8 Inch H
- Terminal Type:
- Load Lug
- Interrupting Rating:
- 10 kA
- Series:
- MP-T
- Voltage Rating:
- 240 VAC
- Current Rating:
- 20 A
- Data Sheet:
- SiemensAG_06646_1_DATA.pdf
- Installation/Operator:
- SiemensAG_00215_INST.pdf
- Used On:
- Loadcenter
- Wire Size:
- 16 to 14 AWG (Copper/Aluminum)
- Mounting:
- Plug-On
- Type:
- Common Trip
- Number of Poles:
- 3
- Country of Origin:
- Mexico
MSRP $697.12Surplus $67.33 -
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Murray MP315 Miniature Circuit Breakers (MCBs) 3P 15A 50/60Hz 3Ph EA
MSRP $662.82Surplus $71.22Murray MP315 Miniature Circuit Breakers (MCBs) 3P 15A 50/60Hz 3Ph EA​ ARCA SKU: C15-8545 Brand: Murray MPN: MP315 UPC: 40892237658 Shipping Weight: 2.10 lbs. Shipping Height: 4.00 In...- SKU:
- C15-8545
- Short Description:
- 240 VAC, 15 A, 10 kA, 3-Pole, Plug-In Mount, MP-T Frame, Thermal Magnetic Trip Unit, Miniature Circuit Breaker
- Used On:
- Loadcenter
- Series:
- MP-T
- Data Sheet:
- SiemensAG_06645_1_DATA.pdf
- Size:
- 3 Inch W x 3 Inch D x 3 1/8 Inch H
- Wire Size:
- 16 to 14 AWG (Copper/Aluminum)
- Number of Poles:
- 3
- Interrupting Rating:
- 10 kA
- Terminal Type:
- Load Lug
- Installation/Operator:
- SiemensAG_00215_INST.pdf
- Current Rating:
- 15 A
- Voltage Rating:
- 240 VAC
- Mounting:
- Plug-On
- Type:
- Common Trip
- Country of Origin:
- Mexico
MSRP $662.82Surplus $71.22 -
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Murray MP360 Miniature Circuit Breakers (MCBs) 3P 60A 240V
MSRP $697.12Surplus $64.51Murray MP360 Miniature Circuit Breakers (MCBs) 3P 60A 240V​ ARCA SKU: C15-6312 Brand: Murray MPN: MP360 UPC: 04089223845 Shipping Weight: 2.20 lbs. Shipping Height: 2.00 In...- SKU:
- C15-6312
- TS PIK:
- 120071987
- Terminal Type:
- Load Lug
- Mounting:
- Plug-On
- Data Sheet:
- SiemensAG_06654_1_DATA.pdf
- Short Description:
- 240 VAC, 60 A, 10 kA, 3-Pole, Plug-In Mount, MP-T Frame, Thermal Magnetic Trip Unit, Miniature Circuit Breaker
- Installation/Operator:
- SiemensAG_00215_INST.pdf
- Type:
- Common Trip
- Interrupting Rating:
- 10 kA
- Number of Poles:
- 3
- Current Rating:
- 60 A
- Wire Size:
- 8 to 2/0 AWG (Copper/Aluminum)
- Size:
- 3 Inch W x 3 Inch D x 3 1/8 Inch H
- Used On:
- Loadcenter
- Voltage Rating:
- 240 VAC
- Series:
- MP-T
- Country of Origin:
- Mexico
MSRP $697.12Surplus $64.51 -
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Murray MP340 Miniature Circuit Breakers (MCBs)
MSRP $697.12Surplus $59.01Murray MP340 Miniature Circuit Breakers (MCBs)​ ARCA SKU: C15-6302 Brand: Murray MPN: MP340 UPC: Shipping Weight: 1.10 lbs. Shipping Height: 5.00 In. Shipping Length: 4...- SKU:
- C15-6302
- Short Description:
- 240 VAC, 40 A, 10 kA, 3-Pole, Plug-In Mount, MP-T Frame, Thermal Magnetic Trip Unit, Miniature Circuit Breaker
- Number of Poles:
- 3
- Interrupting Rating:
- 10 kA
- Type:
- Common Trip
- Used On:
- Loadcenter
- Installation/Operator:
- SiemensAG_00215_INST.pdf
- Size:
- 3 Inch W x 3 Inch D x 3 1/8 Inch H
- Current Rating:
- 40 A
- Terminal Type:
- Load Lug
- Data Sheet:
- SiemensAG_06651_1_DATA.pdf
- Mounting:
- Plug-On
- Voltage Rating:
- 240 VAC
- Series:
- MP-T
- Wire Size:
- 8 to 6 AWG (Copper), 8 to 4 AWG (Aluminum)
- Country of Origin:
- Mexico
MSRP $697.12Surplus $59.01 -
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Murray MP3100 Miniature Circuit Breakers (MCBs) EA
MSRP $1,038.94Surplus $72.79SKU: C15-6331 Brand: Murray MPN: MP3100 UPC: 04089223760 Shipping Weight: 1.00 lbs. Shipping Height: 3.00 In. Shipping Length: 3.15 In. Shipping Width: 3.00 In...- SKU:
- C15-6331
- TS PIK:
- 21029187
- Short Description:
- 240 VAC, 100 A, 10 kA, 3-Pole, Plug-In Mount, MP-T Frame, Thermal Magnetic Trip Unit, Miniature Circuit Breaker
- Type:
- Common Trip
- Series:
- MP-T
- Interrupting Rating:
- 10 kA
- Mounting:
- Plug-On
- Current Rating:
- 100 A
- Used On:
- Loadcenter
- Voltage Rating:
- 240 VAC
- Wire Size:
- 8 to 2/0 AWG (Copper/Aluminum)
- Installation/Operator:
- SiemensAG_00215_INST.pdf
- Data Sheet:
- SiemensAG_06644_1_DATA.pdf
- Size:
- 3 Inch W x 3 Inch D x 3 1/8 Inch H
- Terminal Type:
- Load Lug
- Number of Poles:
- 3
- Country of Origin:
- Mexico
MSRP $1,038.94Surplus $72.79 -
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Murray MP350 Miniature Circuit Breakers (MCBs)
MSRP $697.12Surplus $250.97Murray MP350 Miniature Circuit Breakers (MCBs)​ ARCA SKU: C15-6332 Brand: Murray MPN: MP350 UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0...- SKU:
- C15-6332
- Short Description:
- 240 VAC, 50 A, 10 kA, 3-Pole, Plug-On Mount, MP-T Frame, Thermal Magnetic Trip Unit, Miniature Circuit Breaker
- Series:
- MP-T
- Voltage Rating:
- 240 VAC
- Terminal Type:
- Load Lug
- Type:
- Common Trip
- Wire Size:
- 8 to 6 AWG (Copper), 8 to 4 AWG (Aluminum)
- Used On:
- Loadcenter
- Installation/Operator:
- SiemensAG_00215_INST.pdf
- Mounting:
- Plug-On
- Number of Poles:
- 3
- Data Sheet:
- SiemensAG_06653_1_DATA.pdf
- Current Rating:
- 50 A
- Size:
- 3 Inch W x 3 Inch D x 3 1/8 Inch H
- Interrupting Rating:
- 10 kA
MSRP $697.12Surplus $250.97 -
Murray MQJ3200 Molded Case Breakers (MCCBs)
MSRP $4,078.45Surplus $203.26SKU: C15-7653 Brand: Murray MPN: MQJ3200 UPC: 04089252510 Shipping Weight: 4.55 lbs. Shipping Height: 4.00 In. Shipping Length: 8.00 In. Shipping Width: 5.00 In...- SKU:
- C15-7653
- TS PIK:
- 120152672
- Number of Poles:
- 3
- Current Rating:
- 200 A
- Voltage Rating:
- 240 VAC
- Type:
- Molded Case, Common Trip
- Terminal Type:
- Load Lug
- Short Description:
- 240 VAC, 200 A, 10 kA, 3-Pole, 6 AWG to 300 KCMIL Copper/4 AWG to 300 KCMIL Aluminum, Lug Terminal, MQ Frame, Thermal Magnetic Trip Unit, Molded Case Circuit Breaker
- Series:
- MQ
- Interrupting Rating:
- 10 kA
- Country of Origin:
- Mexico
- Wire Size:
- 6 AWG to 300 KCMIL (Copper), 4 AWG to 300 KCMIL (Aluminum)
- Used On:
- Loadcenter
MSRP $4,078.45Surplus $203.26
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