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
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Murray MP150 Miniature Circuit Breakers (MCBs)
MSRP $39.00Surplus $7.43Murray MP150 Miniature Circuit Breakers (MCBs)​ ARCA SKU: C15-8240 Brand: Murray 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 $7.43 -
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Murray MP3030 Miniature Circuit Breakers (MCBs) 30A 120V
MSRP $141.75Surplus $14.68Murray MP3030 Miniature Circuit Breakers (MCBs) 30A 120V​ ARCA SKU: C15-6309 Brand: Murray MPN: MP3030 UPC: 04089250776 Shipping Weight: 0.60 lbs. Shipping Height: 4.00 In. Shipping...- SKU:
- C15-6309
- TS PIK:
- 120071986
- Short Description:
- 120 VAC, 30 A, 10 kA, (2) 1-Pole, 14 to 6 AWG Copper/12 to 6 AWG Aluminum, Plug-In Mount, MH-T Frame, Duplex, Thermal Magnetic Trip Unit, Miniature Circuit Breaker
- Data Sheet:
- SiemensAG_06642_1_DATA.pdf
- Mounting:
- Plug-On
- Voltage Rating:
- 120 VAC
- Number of Poles:
- 1
- Type:
- Duplex
- Used On:
- Loadcenter
- Installation/Operator:
- SiemensAG_00215_INST.pdf
- Terminal Type:
- Load Lug
- Interrupting Rating:
- 10 kA
- Current Rating:
- 30 A
- Wire Size:
- 14 to 8 AWG (Copper), 12 to 8 AWG (Aluminum)
- Country of Origin:
- Mexico
MSRP $141.75Surplus $14.68 -
Murray MP1515N Miniature Circuit Breakers (MCBs) 1P 15/15A 50/60Hz 1Ph EA
MSRP $235.80Surplus $32.69Murray MP1515N Miniature Circuit Breakers (MCBs) 1P 15/15A 50/60Hz 1Ph EA​ ARCA SKU: C15-6297 Brand: Murray MPN: MP1515N UPC: 04089228063 Shipping Weight: 2.50 lbs. Shipping...- SKU:
- C15-6297
- Data Sheet:
- SiemensAG_01518_1_DATA.pdf
- Used On:
- Loadcenter
- Terminal Type:
- Load Lug
- Wire Size:
- 14 to 8 AWG (Copper), 12 to 8 AWG (Aluminum)
- Current Rating:
- 15 A
- Mounting:
- Plug-On
- Short Description:
- 120 V, 15/15 A, 10 kA, 1-Pole, Load Lug Terminal, MH-T Frame, Thermal Magnetic, Low Vage, Miniature, Circuit Breaker
- Type:
- Duplex
- Number of Poles:
- 1
- Voltage Rating:
- 120 VAC
- Interrupting Rating:
- 10 kA
- Country of Origin:
- Mexico
MSRP $235.80Surplus $32.69 -
Murray MM1515 Miniature Circuit Breakers (MCBs)
MSRP $43.00Surplus $15.20Murray MM1515 Miniature Circuit Breakers (MCBs)​ ARCA SKU: C15-8856 Brand: Murray MPN: MM1515 UPC: Shipping Weight: 2.15 lbs. Shipping Height: 5.00 In. Shipping...- SKU:
- C15-8856
- Number of Poles:
- 1
MSRP $43.00Surplus $15.20 -
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Murray MP115GF Miniature Circuit Breakers (MCBs) 15A 120V
MSRP $181.00Surplus $37.41Murray MP115GF Miniature Circuit Breakers (MCBs) 15A 120V​ ARCA SKU: C15-6290 Brand: Murray MPN: MP115GF UPC: 04089227805 Shipping Weight: 0.40 lbs. Shipping Height: 1.00 In...- SKU:
- C15-6290
- TS PIK:
- 124254312
- Short Description:
- 120 VAC, 15 A, 10 kA, 5 mA, 1-Pole, Plug-In Mount, MP-GT Frame, GFCI, Personal Protect, Miniature Circuit Breaker
- Type:
- Circuit Interrupter
- Terminal Type:
- Load Lug
- Voltage Rating:
- 120 VAC
- Wire Size:
- 14 to 10 AWG (Copper), 12 to 8 AWG (Aluminum)
- Interrupting Rating:
- 10 kA
- Used On:
- Loadcenter
- Size:
- 1 Inch W x 2.66 Inch D x 2.84 Inch H
- Data Sheet:
- SiemensAG_06572_1_DATA.pdf
- Number of Poles:
- 1
- Mounting:
- Plug-On
- Current Rating:
- 15 A
- Catalog:
- SiemensAG_01825_1_3_CAT.pdf
- Country of Origin:
- Philippines
MSRP $181.00Surplus $37.41 -
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Murray MP115 Miniature Circuit Breakers (MCBs) 1P 15A 50/60Hz 1Ph EA
MSRP $39.00Surplus $6.51Murray MP115 Miniature Circuit Breakers (MCBs) 1P 15A 50/60Hz 1Ph EA​ ARCA SKU: C15-6289 Brand: Murray MPN: MP115 UPC: 04089251888 Shipping Weight: 0.65 lbs. Shipping Height: 4.00 In...- SKU:
- C15-6289
- TS PIK:
- 21029779
- Series:
- MP-T
- Short Description:
- 120 V, 15 A, 10 kA, 1-Pole, Load Lug Terminal, MP-T Frame, Thermal Magnetic, Low Vage, Miniature, Circuit Breaker
- Mounting:
- Plug-On
- Voltage Rating:
- 120 VAC
- Number of Poles:
- 1
- Current Rating:
- 15 A
- Size:
- 1 Inch W x 3 Inch D x 3 1/8 Inch H
- Interrupting Rating:
- 10 kA
- Terminal Type:
- Load Lug
- Wire Size:
- 16 to 14 AWG (Copper/Aluminum)
- Used On:
- Loadcenter
- Data Sheet:
- SiemensAG_01513_1_DATA.pdf
- Country of Origin:
- Mexico
MSRP $39.00Surplus $6.51 -
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Murray MP1515 Miniature Circuit Breakers (MCBs) 120V
MSRP $135.00Surplus $26.28Murray MP1515 Miniature Circuit Breakers (MCBs) 120V​ ARCA SKU: C15-6296 Brand: Murray MPN: MP1515 UPC: 04089228060 Shipping Weight: 4.70 lbs. Shipping Height: 3.00 In. Shipping...- SKU:
- C15-6296
- TS PIK:
- 120072076
- Wire Size:
- 14 to 8 AWG (Copper), 12 to 8 AWG (Aluminum)
- Interrupting Rating:
- 10 kA
- Installation/Operator:
- SiemensAG_00215_INST.pdf
- Voltage Rating:
- 120 VAC
- Terminal Type:
- Load Lug
- Short Description:
- 120 VAC, 15 A, 10 kA, (2) 1-Pole, 14 to 8 AWG Copper/12 to 8 AWG Aluminum, Plug-In Mount, MH-T Frame, Duplex, Thermal Magnetic Trip Unit, Miniature Circuit Breaker
- Data Sheet:
- SiemensAG_06585_1_DATA.pdf
- Used On:
- Loadcenter
- Number of Poles:
- 1
- Current Rating:
- 15 A
- Type:
- Duplex
- Mounting:
- Plug-On
- Country of Origin:
- Mexico
MSRP $135.00Surplus $26.28 -
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Murray MP120 Miniature Circuit Breakers (MCBs) 1P 20A 50/60Hz 1Ph EA
MSRP $39.00Surplus $8.29Murray MP120 Miniature Circuit Breakers (MCBs) 1P 20A 50/60Hz 1Ph EA​ ARCA SKU: C15-6292 Brand: Murray MPN: MP120 UPC: 04089251889 Shipping Weight: 0.40 lbs. Shipping Height: 4.00 In...- SKU:
- C15-6292
- TS PIK:
- 21029780
- Interrupting Rating:
- 10 kA
- Size:
- 1 Inch W x 3 Inch D x 3 1/8 Inch H
- Series:
- MP-T
- Current Rating:
- 20 A
- Number of Poles:
- 1
- Data Sheet:
- SiemensAG_01515_1_DATA.pdf
- Wire Size:
- 16 to 14 AWG (Copper/Aluminum)
- Terminal Type:
- Load Lug
- Used On:
- Loadcenter
- Short Description:
- 120 V, 20 A, 10 kA, 1-Pole, Load Lug Terminal, MP-T Frame, Thermal Magnetic, Low Vage, Miniature, Circuit Breaker
- Mounting:
- Plug-On
- Voltage Rating:
- 120 VAC
- Country of Origin:
- Mexico
MSRP $39.00Surplus $8.29 -
Murray MP130 Miniature Circuit Breakers (MCBs) 1P 30A 50/60Hz 1Ph EA
MSRP $39.00Surplus $16.56Murray MP130 Miniature Circuit Breakers (MCBs) 1P 30A 50/60Hz 1Ph EA​ ARCA SKU: C15-6293 Brand: Murray MPN: MP130 UPC: 04089251891 Shipping Weight: 3.40 lbs. Shipping Height: 3.00 In...- SKU:
- C15-6293
- TS PIK:
- 21029782
- Used On:
- Loadcenter
- Size:
- 1 Inch W x 3 Inch D x 3 1/8 Inch H
- Wire Size:
- 16 to 14 AWG (Copper/Aluminum)
- Current Rating:
- 30 A
- Voltage Rating:
- 120 VAC
- Mounting:
- Plug-On
- Data Sheet:
- SiemensAG_06579_1_DATA.pdf
- Interrupting Rating:
- 10 kA
- Number of Poles:
- 1
- Series:
- MP-T
- Terminal Type:
- Load Lug
- Short Description:
- 120 VAC, 30 A, 10 kA, 1-Pole, Plug-In Mount, MP-T Frame, Thermal Magnetic Trip Unit, Miniature Circuit Breaker
- Installation/Operator:
- SiemensAG_00215_INST.pdf
- Country of Origin:
- Mexico
MSRP $39.00Surplus $16.56 -
Murray MP2020 Miniature Circuit Breakers (MCBs) 120V
MSRP $141.75Surplus $57.20Murray MP2020 Miniature Circuit Breakers (MCBs) 120V​ ARCA SKU: C15-4042 Brand: Murray MPN: MP2020 UPC: 04089228110 Shipping Weight: 0.35 lbs. Shipping Height: 1.00 In. Shipping...- SKU:
- C15-4042
- Series:
- MP
- Type:
- Thermal Magnetic
- Type:
- Duplex
- Approval:
- UL 489
- Approval:
- CSA C22.2
- Volts:
- 120 VAC
- Amps:
- 32 A
- Used On:
- Loadcenter
- Poles:
- 1
- Mounting:
- Plug-On
- Interrupting Rating:
- 10 kA
- Terminal Type:
- Load Lug
- Wire Size:
- 14 to 8 AWG (Copper)
- Wire Size:
- 12 to 8 AWG (Aluminum)
- Short Description:
- 120 VAC, 20 A, 10 kA, (2) 1-Pole, 14 to 8 AWG Copper/12 to 8 AWG Aluminum, Plug-In Mount, MH-T Frame, Duplex, Thermal Magnetic Trip Unit
- Data Sheet:
- SiemensAG_06589_1_DATA.pdf
- Installation/Operator:
- SiemensAG_00215_INST.pdf
- TS PIK:
- 21029422
- Number of Poles:
- 1
- Voltage Rating:
- 120 VAC
- Current Rating:
- 20 A
- Country of Origin:
- Mexico
MSRP $141.75Surplus $57.20 -
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Murray MP120GF Miniature Circuit Breakers (MCBs) EA
MSRP $181.00Surplus $48.58Murray MP120GF Miniature Circuit Breakers (MCBs) EA​ ARCA SKU: C15-6287 Brand: Murray MPN: MP120GF UPC: 04089227815 Shipping Weight: 0.45 lbs. Shipping Height: 3.50 In. Shipping...- SKU:
- C15-6287
- TS PIK:
- 120072461
- Short Description:
- 120 V, 20 A, 10 kA, 1-Pole, Plug-In, MP-GT, MP-HGT, Class A, Feeder, Miniature, Ground Fault, Circuit Breaker
- Terminal Type:
- Load Lug
- Number of Poles:
- 1
- Type:
- Circuit Interrupter
- Voltage Rating:
- 120 VAC
- Data Sheet:
- SiemensAG_01517_1_DATA.pdf
- Current Rating:
- 20 A
- Interrupting Rating:
- 10 kA
- Mounting:
- Plug-On
- Used On:
- Loadcenter
- Wire Size:
- 14 to 10 AWG (Copper), 12 to 8 AWG (Aluminum)
- Size:
- 1 Inch W x 2.66 Inch D x 2.84 Inch H
- Country of Origin:
- Philippines
MSRP $181.00Surplus $48.58 -
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Murray MP130GF Miniature Circuit Breakers (MCBs) 30A EA
MSRP $181.00Surplus $64.65Murray MP130GF Miniature Circuit Breakers (MCBs) 30A EA​ ARCA SKU: C15-6324 Brand: Murray MPN: MP130GF UPC: 040892522259 Shipping Weight: 0.20 lbs. Shipping Height: 1.00 In...- SKU:
- C15-6324
- Used On:
- Loadcenter
- Number of Poles:
- 1
- Interrupting Rating:
- 10 kA
- Data Sheet:
- SiemensAG_06580_1_DATA.pdf
- Wire Size:
- 14 to 10 AWG (Copper), 12 to 8 AWG (Aluminum)
- Catalog:
- SiemensAG_01825_1_3_CAT.pdf
- Current Rating:
- 30 A
- Size:
- 1 Inch W x 2.66 Inch D x 2.84 Inch H
- Type:
- Circuit Interrupter
- Voltage Rating:
- 120 VAC
- Mounting:
- Plug-On
- Terminal Type:
- Load Lug
- Short Description:
- 120 VAC, 30 A, 10 kA, 5 mA, 1-Pole, Plug-In Mount, MP-GT Frame, GFCI, Personal Protect, Miniature Circuit Breaker
- Country of Origin:
- Philippines
MSRP $181.00Surplus $64.65 -
Murray MP140 Miniature Circuit Breakers (MCBs)
MSRP $37.00Surplus $8.98Murray MP140 Miniature Circuit Breakers (MCBs)​ ARCA SKU: C15-6295 Brand: Murray MPN: MP140 UPC: Shipping Weight: 3.55 lbs. Shipping Height: 3.00 In. Shipping Length: 11...- SKU:
- C15-6295
- Series:
- MP-T
- Wire Size:
- 8 to 6 AWG (Copper), 8 to 4 AWG (Aluminum)
- Short Description:
- 120 VAC, 40 A, 10 kA, 1-Pole, Plug-In Mount, MP-T Frame, Thermal Magnetic Trip Unit, Miniature Circuit Breaker
- Voltage Rating:
- 120 VAC
- Size:
- 1 Inch W x 3 Inch D x 3 1/8 Inch H
- Current Rating:
- 40 A
- Installation/Operator:
- SiemensAG_00215_INST.pdf
- Used On:
- Loadcenter
- Number of Poles:
- 1
- Data Sheet:
- SiemensAG_06582_1_DATA.pdf
- Terminal Type:
- Load Lug
- Interrupting Rating:
- 10 kA
- Mounting:
- Plug-On
- Country of Origin:
- United States
MSRP $37.00Surplus $8.98 -
Murray MQ115 Miniature Circuit Breakers (MCBs) 1P 15A
MSRP $70.20Surplus $12.58Murray MQ115 Miniature Circuit Breakers (MCBs) 1P 15A​ ARCA SKU: C15-6314 Brand: Murray MPN: MQ115 UPC: 04089252814 Shipping Weight: 2.70 lbs. Shipping Height: 4.00 In. Shipping...- SKU:
- C15-6314
- TS PIK:
- 120071844
- Voltage Rating:
- 120 VAC
- Type:
- Common Trip
- Used On:
- Loadcenter, Type QO Circuit Breaker, Type QO Panelboard
- Interrupting Rating:
- 10 kA
- Current Rating:
- 15 A
- Short Description:
- 15 A, 10 kA, 1-Pole, 3/4" Format, MSQ Frame, Circuit Breaker
- Number of Poles:
- 1
- Data Sheet:
- SiemensAG_06675_1_DATA.pdf
- Mounting:
- Plug-On
- Country of Origin:
- Mexico
MSRP $70.20Surplus $12.58 -
Murray MQ120 Miniature Circuit Breakers (MCBs) 1P 20A
MSRP $70.20Surplus $16.85Murray MQ120 Miniature Circuit Breakers (MCBs) 1P 20A​ ARCA SKU: C15-6315 Brand: Murray MPN: MQ120 UPC: 04089252815 Shipping Weight: 4.30 lbs. Shipping Height: 4.00 In. Shipping...- SKU:
- C15-6315
- TS PIK:
- 120072352
- Data Sheet:
- SiemensAG_06676_1_DATA.pdf
- Interrupting Rating:
- 10 kA
- Current Rating:
- 20 A
- Mounting:
- Plug-On
- Short Description:
- 20 A, 10 kA, 1-Pole, 3/4" Format, MSQ Frame, Circuit Breaker
- Type:
- Common Trip
- Voltage Rating:
- 120 VAC
- Number of Poles:
- 1
- Used On:
- Loadcenter, Type QO Circuit Breaker, Type QO Panelboard
- Country of Origin:
- Mexico
MSRP $70.20Surplus $16.85 -
Murray MQ130 Miniature Circuit Breakers (MCBs) 1P 30A 50/60Hz 1Ph EA
MSRP $66.60Surplus $68.58Murray MQ130 Miniature Circuit Breakers (MCBs) 1P 30A 50/60Hz 1Ph EA​ ARCA SKU: C15-6316 Brand: Murray MPN: MQ130 UPC: 30040892528160 Shipping Weight: 2.30 lbs. Shipping Height: 4.00...- SKU:
- C15-6316
- Short Description:
- 30 A, 10 kA, 1-Pole, 3/4" Format, MSQ Frame, Circuit Breaker
- Mounting:
- Plug-On
- Data Sheet:
- SiemensAG_06677_1_DATA.pdf
- Voltage Rating:
- 120 VAC
- Number of Poles:
- 1
- Type:
- Common Trip
- Used On:
- Loadcenter, Type QO Circuit Breaker, Type QO Panelboard
- Interrupting Rating:
- 10 kA
- Current Rating:
- 30 A
- Country of Origin:
- Mexico
MSRP $66.60Surplus $68.58
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