
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 BQ3B090 Miniature Circuit Breakers (MCBs)
MSRP $861.00Surplus $226.10Siemens BQ3B090 Miniature Circuit Breakers (MCBs)​ ARCA SKU: C15-8748 Brand: Siemens MPN: BQ3B090 UPC: 78364310265 Shipping Weight: 1.05 lbs. Shipping Height: 3.00 In. Shipping...- SKU:
- C15-8748
- TS PIK:
- 21366175
- Data Sheet:
- SiemensAG_05407_1_DATA.pdf
- Series:
- BQ
- Type:
- Molded Case, Thermal and Fixed Magnetic, Common Trip
- Catalog:
- SiemensAG_01698_17_1_17_7_17_110_CAT.pdf
- Current Rating:
- 90 A
- Size:
- 3 Inch W x 3 Inch D x 4 Inch H
- Number of Poles:
- 3
- Voltage Rating:
- 240 VAC at 50/60 Hz (UL)
- Interrupting Rating:
- 10 kA at 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
- Terminal Type:
- Load Lug
- Short Description:
- 240 VAC, 90 A, 10 kA, 3-Pole, Load Lug Terminal, BQ Frame, Bolt-On, Common Trip, Molded Case Circuit Breaker
- Country of Origin:
- Mexico
- Approval:
- UL
MSRP $861.00Surplus $226.10 -
Siemens BQD280 Miniature Circuit Breakers (MCBs)
MSRP $1,368.00Surplus $184.19SKU: C15-8745 Brand: Siemens MPN: BQD280 UPC: 78364327731 Shipping Weight: 1.10 lbs. Shipping Height: 3.00 In. Shipping Length: 4.00 In. Shipping Width: 2.00 In...- SKU:
- C15-8745
- TS PIK:
- 121991379
- Interrupting Rating:
- 14 kA at 480 Star/277 VAC/125/250 VDC (UL)
- Series:
- BQD
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Data Sheet:
- SiemensAG_05432_1_DATA.pdf
- Catalog:
- SiemensAG_00565_11_16_CAT.pdf
- Number of Poles:
- 2
- Short Description:
- 480 VAC Star/277 VAC, 80 A, 14 kA, 2-Pole, Low-Tab Mount, Molded Case, Thermal Magnetic Trip Unit, Branch, Panelboard Circuit Breaker
- Voltage Rating:
- 480 Star/277 VAC at 50/60 Hz, 125/250 VDC (UL)
- Installation/Operator:
- SiemensAG_00221_INST.pdf
- Type:
- Branch, Molded Case, Thermal and Fixed Magnetic
- Current Rating:
- 80 A
- Country of Origin:
- Mexico
- Approval:
- UL
- Application:
- Lighting, Distribution
- Installation:
- Bolt-On
MSRP $1,368.00Surplus $184.19 -
Siemens BQD290 Miniature Circuit Breakers (MCBs)
MSRP $1,368.00Surplus $148.34SKU: C15-8746 Brand: Siemens MPN: BQD290 UPC: 78364327732 Shipping Weight: 1.15 lbs. Shipping Height: 4.49 In. Shipping Length: 4.00 In. Shipping Width: 2.00 In...- SKU:
- C15-8746
- TS PIK:
- 21367352
- Number of Poles:
- 2
- Current Rating:
- 90 A
- Voltage Rating:
- 480 Star/277 VAC at 50/60 Hz, 125/250 VDC (UL)
- Short Description:
- 480 VAC Star/277 VAC, 90 A, 14 kA, 2-Pole, Low-Tab Mount, Molded Case, Thermal Magnetic Trip Unit, Branch, Panelboard Circuit Breaker
- Data Sheet:
- SiemensAG_05433_1_DATA.pdf
- Catalog:
- SiemensAG_00565_11_16_CAT.pdf
- Interrupting Rating:
- 14 kA at 480 Star/277 VAC/125/250 VDC (UL)
- Series:
- BQD
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Type:
- Branch, Molded Case, Thermal and Fixed Magnetic
- Installation/Operator:
- SiemensAG_00221_INST.pdf
- Country of Origin:
- Mexico
- Installation:
- Bolt-On
- Application:
- Lighting, Distribution
- Approval:
- UL
MSRP $1,368.00Surplus $148.34 -
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Siemens ED23B050 Molded Case Breakers (MCCBs)
MSRP $1,379.00Surplus $327.18SKU: C15-7418 Brand: Siemens MPN: ED23B050 UPC: 78364320903 Shipping Weight: 3.70 lbs. Shipping Height: 4.00 In. Shipping Length: 8.00 In. Shipping Width: 6.00 In...- SKU:
- C15-7418
- TS PIK:
- 106248972
- Size:
- 3 Inch Width x 4.56 Inch Depth x 6.35 Inch Height
- Catalog:
- SiemensAG_01698_17_78-17_80_CAT.pdf
- Terminal Type:
- Load Lug
- Number of Poles:
- 3
- Type:
- Thermal Magnetic
- Interrupting Rating:
- 10 kA at 240 VAC (UL 489)
- Frame Type:
- ED
- Current Rating:
- 50 A
- Installation/Operator:
- SiemensAG_00313_INST.pdf
- Voltage Rating:
- 240 VAC
- Series:
- ED2
- Short Description:
- 240 VAC 50/60 Hz, 50 A at 40 Deg C, 10 kA, 3-Pole, 10 to 1/0 AWG Copper/Aluminum, Load Lug Terminal, ED Frame, Thermal Magnetic Trip Unit, Molded Case Circuit Breaker
- Country of Origin:
- Mexico
- Approval:
- UL 489
MSRP $1,379.00Surplus $327.18 -
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Siemens ED23B060 Molded Case Breakers (MCCBs) ED 3P 60A 240V 50/60Hz 3Ph ED Frame
MSRP $1,425.00Surplus $396.34SKU: C15-3149 Brand: Siemens MPN: ED23B060 UPC: 783643209046 Shipping Weight: 3.45 lbs. Shipping Height: 5.00 In. Shipping Length: 7.00 In. Shipping Width: 3.00 In...- SKU:
- C15-3149
- Series:
- ED2
- Type:
- Molded Case
- Type:
- Thermal Magnetic
- Approval:
- UL 489
- Size:
- 3 Inch Width x 4.56 Inch Depth x 6.35 Inch Height
- Volts:
- 240 VAC
- Amps:
- 60 A
- Poles:
- 3
- Interrupting Rating:
- 10 kA at 240 VAC (UL 489)
- Terminal Type:
- Load Lug
- Frame Type:
- ED
- Maximum AC Voltage Rating:
- 240 V
- Short Description:
- 240 VAC 50/60 Hz, 60 A at 40 Deg C, 10 kA, 3-Pole, 10 to 1/0 AWG Copper/Aluminum, Load Lug Terminal, ED Frame, Thermal Magnetic Trip Unit
- Catalog:
- SiemensAG_01698_17_78-17_80_CAT.pdf
- Installation/Operator:
- SiemensAG_00313_INST.pdf
- Voltage Rating:
- 240 VAC
- Current Rating:
- 60 A
- Number of Poles:
- 3
- Country of Origin:
- MEX
MSRP $1,425.00Surplus $396.34 -
Siemens ED43B100 Molded Case Breakers (MCCBs)
MSRP $2,504.00Surplus $728.84SKU: C15-8471 Brand: Siemens MPN: ED43B100 UPC: 78364320948 Shipping Weight: 3.75 lbs. Shipping Height: 4.00 In. Shipping Length: 8.00 In. Shipping Width: 6.00 In...- SKU:
- C15-8471
- TS PIK:
- 21331889
- Short Description:
- 480 VAC, 100 A, 18 kA Interrupt, 3-Pole, ED4-Frame, Thermal Magnetic, Molded Case Circuit Breaker
- Number of Poles:
- 3
- Frame Type:
- ED4
- Voltage Rating:
- 480 VAC 50/60 Hertz
- Catalog:
- SiemensAG_00876_5_30_CAT.pdf
- Type:
- Molded Case Switch, Thermal and Fixed Magnetic Trip
- Terminal Type:
- Load Side Lug
- Interrupting Rating:
- 18 kA
- Maximum AC Voltage Rating:
- 480 V
- Size:
- 3 Inch Width x 4 Inch Depth x 6.34 Inch Height
- Current Rating:
- 100 A
- Series:
- ED4
- Country of Origin:
- Mexico
- Approval:
- UL 489
MSRP $2,504.00Surplus $728.84 -
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Siemens ED62B030 Molded Case Breakers (MCCBs)
MSRP $1,910.00Surplus $444.22SKU: C15-7426 Brand: Siemens MPN: ED62B030 UPC: 78364320954 Shipping Weight: 2.50 lbs. Shipping Height: 3.00 In. Shipping Length: 8.00 In. Shipping Width: 6.00 In...- SKU:
- C15-7426
- TS PIK:
- 106247667
- Size:
- 2 Inch W x 4.56 Inch D x 6.35 Inch H
- Number of Poles:
- 2
- Voltage Rating:
- 600 VAC at 50/60 Hz, 250 VDC
- Short Description:
- 600 VAC 50/60 Hz, 250 VDC, 30 A at 40 Deg C, 18/25 kA, 2-Pole, 10 to 1/0 AWG Copper/Aluminum, Load Lug Terminal, ED Frame, Thermal Magnetic Trip Unit, Molded Case Circuit Breaker
- Installation/Operator:
- SiemensAG_00313_INST.pdf
- Interrupting Rating:
- 65 kA at 240 VAC, 25 kA at 480 VAC, 18 kA at 600 VAC (UL), 65 kA at 220/240 VAC, 35 kA at 380/415 VAC, 18 kA at 500 VAC (IEC)
- Catalog:
- SiemensAG_01698_17_78-17_80_CAT.pdf
- Current Rating:
- 30 A
- Series:
- ED6
- Type:
- Molded Case, Thermal and Fixed Magnetic
- Terminal Type:
- Load Lug
- Country of Origin:
- Mexico
- Mounting:
- Plug-On
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Wire Size:
- 14 to 10 AWG (Copper), 12 to 10 AWG (Aluminum)
- Approval:
- UL 489, CSA C22.2
MSRP $1,910.00Surplus $444.22 -
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Siemens EH2B100 Molded Case Breakers (MCCBs)
MSRP $396.00Surplus $246.91SKU: C15-11953 Brand: Siemens MPN: EH2B100 UPC: Shipping Weight: 2.25 lbs. Shipping Height: 3.00 In. Shipping Length: 6.00 In. Shipping Width: 5.00 In. Product...- SKU:
- C15-11953
MSRP $396.00Surplus $246.91 -
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Siemens FJ63B225 Molded Case Breakers (MCCBs)
MSRP $1,459.00Surplus $192.19SKU: C15-8773 Brand: Siemens MPN: FJ63B225 UPC: Shipping Weight: 8.30 lbs. Shipping Height: 7.00 In. Shipping Length: 11.00 In. Shipping Width: 6.00 In. Product...- SKU:
- C15-8773
MSRP $1,459.00Surplus $192.19 -
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Siemens HED43B060 Molded Case Breakers (MCCBs)
MSRP $3,546.00Surplus $795.34SKU: C15-7531 Brand: Siemens MPN: HED43B060 UPC: 78364321017 Shipping Weight: 3.65 lbs. Shipping Height: 4.00 In. Shipping Length: 8.00 In. Shipping Width: 6.00 In...- SKU:
- C15-7531
- TS PIK:
- 115459890
- Frame Type:
- ED
- Number of Poles:
- 3
- Terminal Type:
- Load Lug
- Type:
- Thermal Magnetic
- Size:
- 3 Inch Width x 4.56 Inch Depth x 6.35 Inch Height
- Current Rating:
- 60 A
- Catalog:
- SiemensAG_00876_5_30_5_31_CAT.pdf
- Series:
- HED4
- Interrupting Rating:
- 100 kA at 240 VAC (UL 489), 42 kA at 480 VAC (UL 489)
- Voltage Rating:
- 480 VAC
- Short Description:
- 480 VAC, 60 A, 100 kA Interrupt, 3-Pole, HED4-Frame, Thermal Magnetic, Molded Case Circuit Breaker
- Country of Origin:
- Mexico
- Approval:
- UL 489
MSRP $3,546.00Surplus $795.34 -
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Siemens MBKFD3250A Molded Case Breakers (MCCBs)
MSRP $4,151.00Surplus $1,410.15SKU: C15-11972 Brand: Siemens MPN: MBKFD3250A UPC: 887621791667 Shipping Weight: 13.05 lbs. Shipping Height: 10.00 In. Shipping Length: 15.00 In. Shipping Width: 10...- SKU:
- C15-11972
- TS PIK:
- 126055063
- Interrupting Rating:
- 65 kA at 240 VAC, 35 kA at 480 V
- Voltage Rating:
- 240/480 V
- Country of Origin:
- MEX
- Short Description:
- Mounting Kit for 240/480 V 250 A 65 kA/35 kA 3-Pole Panelboard Main Breaker
- Number of Poles:
- 3
- Application:
- Lighting, Distribution
- Type:
- Main
- Current Rating:
- 225 A
- Catalog:
- SiemensAG_00565_11_14_CAT.pdf
- Used On:
- Type P1 Panelboard
MSRP $4,151.00Surplus $1,410.15 -
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Siemens MBKQJ3175 Molded Case Breakers (MCCBs)
MSRP $3,087.00Surplus $362.08SKU: E30-11705 Brand: Siemens MPN: MBKQJ3175 UPC: 78364310043 Shipping Weight: 7.45 lbs. Shipping Height: 7.00 In. Shipping Length: 11.00 In. Shipping Width: 6.00 In...- SKU:
- E30-11705
- TS PIK:
- 115459750
- Series:
- MBK
- Catalog:
- SiemensAG_01822_1_CAT.pdf
- Number of Poles:
- 3
- Current Rating:
- 175 A
- Voltage Rating:
- 240/480 V
- Type:
- Main
- Short Description:
- Mounting Kit for 240 V 175 A 10 kA 3-Pole QJ2/QR2 Panelboard Main Breaker
- Interrupting Rating:
- 10 kA at 240 VAC
- Country of Origin:
- Mexico
- Used On:
- Panelboard
- Approval:
- UL 489, CSA C22.2
- Application:
- Lighting
MSRP $3,087.00Surplus $362.08 -
Siemens MP220 Miniature Circuit Breakers (MCBs) MP 2P 20A 240V
MSRP $130.00Surplus $12.98Siemens MP220 Miniature Circuit Breakers (MCBs) MP 2P 20A 240V​ ARCA SKU: C15-3686 Brand: Siemens MPN: MP220 UPC: 040892518948 Shipping Weight: 0.55 Shipping Height: 2.00 In. Shipping...- SKU:
- C15-3686
- Series:
- Type MP-T
- Type:
- Common Trip
- Approval:
- UL
- Size:
- 2 Inch W x 3 Inch D x 3-1/8 Inch H
- Volts:
- 120/240 VAC
- Amps:
- 32 A
- Used On:
- Loadcenter
- Poles:
- 2
- Mounting:
- Plug-On
- Interrupting Rating:
- 10 kA
- Terminal Type:
- Load Lug
- Wire Size:
- 16 to 14 AWG (Aluminum/Copper)
- Short Description:
- 120/240 V, 20 A, 10 kA, 2-Pole, MP-T Frame
- Data Sheet:
- SiemensAG_01523_1_DATA.pdf
- Current Rating:
- 20 A
- Voltage Rating:
- 120/240 VAC
- Number of Poles:
- 2
- Country of Origin:
- Mexico
MSRP $130.00Surplus $12.98 -
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Siemens NEB3B125B Miniature Circuit Breakers (MCBs)
MSRP $24,480.00Surplus $3,192.00SKU: C15-7491 Brand: Siemens MPN: NEB3B125B UPC: 78364355864 Shipping Weight: 2.55 lbs. Shipping Height: 4.00 In. Shipping Length: 7.00 In. Shipping Width: 4.00 In...- SKU:
- C15-7491
- TS PIK:
- 120152399
- Number of Poles:
- 3
- Current Rating:
- 125 A
- Type:
- Molded Case, Thermal and Fixed Magnetic
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Interrupting Rating:
- 85 kA at 240 VAC, 35 kA at 480 VAC, 22 kA at 600 Star/347 VAC, 35 kA at 125/250 VDC (UL/CSA), 85 kA at 240 VAC, 40 kA at 415 VAC, 35 kA at 125/250 VDC (IEC)
- Voltage Rating:
- 240/480 VAC, 600 Star/347 VAC at 50/60 Hz, 125/250 VDC (UL/CSA), 240/415 VAC at 50/60 Hz, 125/250 VDC (IEC)
- Series:
- NEB
- Short Description:
- 240/347/480/600 VAC 50/60 Hz, 125/250 VDC, 125 A, 85 kA, 3-Pole, Thermal Magnetic Trip Unit, Panelboard Circuit Breaker
- Country of Origin:
- DOM
- Application:
- Lighting, Distribution
- Approval:
- UL 489, CSA, IEC 60947-2
MSRP $24,480.00Surplus $3,192.00 -
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Siemens NGB3B020 Molded Case Breakers (MCCBs) NGB 3P 20A 480V 50/60Hz 3Ph
MSRP $1,650.00Surplus $418.96SKU: C15-3801 Brand: Siemens MPN: NGB3B020 UPC: 783643553408 Shipping Weight: 2.15 lbs. Shipping Height: 4.00 In. Shipping Length: 5.00 In. Shipping Width: 3.00 In...- SKU:
- C15-3801
- Series:
- NGB
- Type:
- Thermal Magnetic
- Type:
- Molded Case
- Approval:
- UL 489
- Volts:
- 600 V
- Amps:
- 32 A
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Poles:
- 3
- Interrupting Rating:
- 14 kA
- Application:
- Reverse Feed
- Short Description:
- 240/480/600/347 VAC 50/60 Hz, 125/250 VDC, 20 A, 100 kA, 3-Pole, Molded Case, Thermal Magnetic Trip Unit
- Catalog:
- SiemensAG_01830_1-5_CAT.pdf
MSRP $1,650.00Surplus $418.96 -
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Siemens P115GF Miniature Circuit Breakers (MCBs)
MSRP $240.93Surplus $239.40Siemens P115GF Miniature Circuit Breakers (MCBs)​ ARCA SKU: E30-8869 Brand: Siemens MPN: P115GF UPC: Shipping Weight: 0.45 lbs. Shipping Height: 3.00 In. Shipping...- SKU:
- E30-8869
MSRP $240.93Surplus $239.40 -
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Siemens P2030 Miniature Circuit Breakers (MCBs)
MSRP $185.00Surplus $117.04Siemens P2030 Miniature Circuit Breakers (MCBs)​ ARCA SKU: C15-8798 Brand: Siemens MPN: P2030 UPC: Shipping Weight: 0.30 lbs. Shipping Height: 2.00 In. Shipping...- SKU:
- C15-8798
- Number of Poles:
- 2
MSRP $185.00Surplus $117.04 -
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Siemens P260 Miniature Circuit Breakers (MCBs)
MSRP $182.99Surplus $151.62Siemens P260 Miniature Circuit Breakers (MCBs)​ ARCA SKU: C15-6218 Brand: Siemens MPN: P260 UPC: Shipping Weight: 0.55 lbs. Shipping Height: 4.00 In. Shipping Length: 4...- SKU:
- C15-6218
MSRP $182.99Surplus $151.62 -
Siemens Q2100HH Miniature Circuit Breakers (MCBs)
MSRP $870.00Surplus $65.09SKU: C15-6270 Brand: Siemens MPN: Q2100HH UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In. Product...- SKU:
- C15-6270
- Catalog:
- SiemensAG_00562_1_41_1_46_1_47_CAT.pdf
- Current Rating:
- 100 A
- Interrupting Rating:
- 65 kA
- Size:
- 2 Inch W x 3 Inch D x 3-1/8 Inch H
- Installation/Operator:
- SiemensAG_00215_INST.pdf
- Used On:
- Loadcenter
- Voltage Rating:
- 120/240 VAC at 50/60 Hz
- Mounting:
- Plug-On
- Terminal Type:
- Load Lug
- Short Description:
- 120/240 VAC, 100 A, 65 kA, 2-Pole, 8 to 2/0 AWG Copper/Aluminum, Load Lug Terminal, Plug-On Mount, HQP Frame, Common Trip, Thermal Magnetic Trip Unit, Miniature Circuit Breaker for Load Center
- Data Sheet:
- SiemensAG_06985_1_DATA.pdf
- Type:
- Thermal and Fixed Magnetic, Common Trip
- Wire Size:
- 8 to 2/0 AWG (Copper/Aluminum)
- Number of Poles:
- 2
- Approval:
- UL 489, CSA C22.2
- Country of Origin:
- MEX
MSRP $870.00Surplus $65.09 -
Siemens Q21515CT2 Miniature Circuit Breakers (MCBs)
MSRP $197.50Surplus $50.54Siemens Q21515CT2 Miniature Circuit Breakers (MCBs)​ ARCA SKU: C15-8783 Brand: Siemens MPN: Q21515CT2 UPC: 78364308391 Shipping Weight: 0.75 lbs. Shipping Height: 3.00 In. Shipping...- SKU:
- C15-8783
- TS PIK:
- 21333534
- Mounting:
- Plug-On
- Short Description:
- 120/240 VAC, 15 A, 10 kA, (2) 2-Pole, 14 to 6 AWG Copper/Aluminum, Load Lug Terminal, Plug-On Mount, QT Frame, Quadplex, Thermal Magnetic Trip Unit, Miniature Circuit Breaker for Load Center
- Terminal Type:
- Load Lug
- Series:
- QT
- Type:
- Molded Case, Thermal and Fixed Magnetic Trip, Quadplex, Common Trip
- Interrupting Rating:
- 10 kA
- Voltage Rating:
- 120/240 VAC at 50/60 Hz
- Current Rating:
- 15 A
- Catalog:
- SiemensAG_00562_1_42_1_46_1_47_CAT.pdf
- Data Sheet:
- SiemensAG_06996_1_DATA.pdf
- Number of Poles:
- (2) Inside, (2) Outside
- Size:
- 2 Inch W x 2.06 Inch D x 3.12 Inch H
- Installation/Operator:
- SiemensAG_00215_INST.pdf
- Wire Size:
- 14 to 6 AWG (Copper/Aluminum)
- Used On:
- Loadcenter
- Country of Origin:
- Mexico
- Approval:
- UL 489, CSA C22.2
MSRP $197.50Surplus $50.54
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