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.
-
Din Rail Mounted Circuit Breakers
-
Main Breakers
-
Miniature Circuit Breakers (MCBs)
-
Molded Case Breakers (MCCBs)
-
Motor Circuit Protector (MCPs)
-
Lug Terminal Kits
-
Auxiliary, Shunt, Trip Units and UVRs
-
Circuit Breaker Accessories
- Product
- Qty in Cart
- Price
-
Contact Us For Quote
Siemens B150H Miniature Circuit Breakers (MCBs)
Surplus $28.73SKU: C15-12078 Brand: Siemens MPN: B150H UPC: 783643263857 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-12078
- Interrupting Rating:
- 22 kA at 120 VAC (UL)
- Number of Poles:
- 1
- Type:
- Molded Case, Thermal and Fixed Magnetic
- Approval:
- UL 489, CSA C22.2
- Voltage Rating:
- 120 VAC at 50/60 Hz (UL)
- Installation:
- Bolt-On
- Country of Origin:
- MEX
- Catalog:
- SiemensAG_00564_7_29_CAT.pdf
- Data Sheet:
- SiemensAG_05177_1_DATA.pdf
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Application:
- Lighting, Distribution
- Installation/Operator:
- SiemensAG_00215_INST.pdf
- Short Description:
- 120 VAC, 50 A, 22 kA, 1-Pole, Bolt-On Mount, Molded Case, Branch, Panelboard Circuit Breaker
- Current Rating:
- 50 A
Surplus $28.73 -
Siemens BQ1B050 Miniature Circuit Breakers (MCBs) 50A 120V
MSRP $85.50Surplus $27.94Siemens BQ1B050 Miniature Circuit Breakers (MCBs) 50A 120V​ ARCA SKU: C15-6129 Brand: Siemens MPN: BQ1B050 UPC: 78364310238 Shipping Weight: 0.35 lbs. Shipping Height: 3.00 In...- SKU:
- C15-6129
- TS PIK:
- 115270499
- Terminal Type:
- Load Lug
- Short Description:
- 120/240 VAC, 50 A, 10 kA, 1-Pole, Load Lug Terminal, BQ Frame, Bolt-On, Molded Case Circuit Breaker
- Series:
- BQ
- Voltage Rating:
- 120 VAC
- Catalog:
- SiemensAG_01698_17_1_17_7_CAT.pdf
- Current Rating:
- 50 A
- Interrupting Rating:
- 10 kA at 120 VAC Symmetrical (UL)
- Number of Poles:
- 1
- Size:
- 1 Inch W x 3 Inch D x 3-3/4 Inch H
- Data Sheet:
- SiemensAG_05359_1_DATA.pdf
- Wire Size:
- 8 to 6 AWG (Copper), 8 to 4 AWG (Aluminum)
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Type:
- Molded Case, Thermal and Fixed Magnetic
- Country of Origin:
- Mexico
- Approval:
- UL
MSRP $85.50Surplus $27.94 -
Siemens BQD150 Miniature Circuit Breakers (MCBs) 1P 50A 277V
MSRP $306.00Surplus $58.34Siemens BQD150 Miniature Circuit Breakers (MCBs) 1P 50A 277V​ ARCA SKU: C15-6154 Brand: Siemens MPN: BQD150 UPC: 78364327715 Shipping Weight: 0.60 lbs. Shipping Height: 4.00 In...- SKU:
- C15-6154
- TS PIK:
- 21368629
- Installation/Operator:
- SiemensAG_00221_INST.pdf
- Voltage Rating:
- 277 VAC at 50/60 Hz, 125 VDC (UL)
- Catalog:
- SiemensAG_00565_11_16_CAT.pdf
- Current Rating:
- 50 A
- Data Sheet:
- SiemensAG_05418_1_DATA.pdf
- Short Description:
- 277 VAC, 50 A, 14 kA, 1-Pole, Low-Tab Mount, Molded Case, Thermal Magnetic Trip Unit, Branch, Panelboard Circuit Breaker
- Interrupting Rating:
- 14 kA at 277 VAC/125 VDC (UL)
- Series:
- BQD
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Number of Poles:
- 1
- Type:
- Branch, Molded Case, Thermal and Fixed Magnetic
- Country of Origin:
- Mexico
- Installation:
- Bolt-On
- Approval:
- UL
- Application:
- Lighting, Distribution
MSRP $306.00Surplus $58.34 -
Contact Us For Quote
Siemens ED21B050 Molded Case Breakers (MCCBs)
MSRP $546.00Surplus $147.42SKU: C15-15821 Brand: Siemens MPN: ED21B050 UPC: 78364320877 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-15821
- Terminal Type:
- Load Lug
- Short Description:
- 120 VAC 50/60 Hz, 125 VDC, 50 A, 10 kA, 1-Pole, 10 to 4 AWG Copper/Aluminum, Load Lug Terminal, ED Frame, Thermal Magnetic Trip Unit, Molded Case Circuit Breaker
- Catalog:
- SiemensAG_01698_17_78-17_80_CAT.pdf
- Type:
- Thermal Magnetic
- Current Rating:
- 50 A
- Voltage Rating:
- 120 VAC, 125 VDC
- Frame Type:
- ED
- Installation/Operator:
- SiemensAG_00313_INST.pdf
- Maximum DC Voltage Rating:
- 125 V
- Interrupting Rating:
- 10 kA at 120 VAC (UL 489), 5 kA at 125 VDC (UL 489)
- Country of Origin:
- USA
- Maximum AC Voltage Rating:
- 120 V
- Size:
- 1 Inch Width x 4.56 Inch Depth x 6.35 Inch Height
- Series:
- ED2
- Number of Poles:
- 1
- Approval:
- UL 489, IEC 947-2
MSRP $546.00Surplus $147.42 -
Siemens ED41B050 Molded Case Breakers (MCCBs) 50A 277V
MSRP $543.00Surplus $130.50SKU: C15-6176 Brand: Siemens MPN: ED41B050 UPC: 78364320915 Shipping Weight: 2.70 lbs. Shipping Height: 5.00 In. Shipping Length: 8.00 In. Shipping Width: 6.00 In...- SKU:
- C15-6176
- TS PIK:
- 115554986
- Short Description:
- 120/277 VAC 50/60 Hz, 125 VDC, 50 A at 40 Deg C, 22 kA, 1-Pole, 10 to 4 AWG Copper/Aluminum, Load Lug Terminal, ED Frame, Thermal Magnetic Trip Unit, Molded Case Circuit Breaker
- Current Rating:
- 50 A
- Terminal Type:
- Load Lug
- Voltage Rating:
- 120/277 VAC at 50/60 Hz, 125 VDC (UL)
- Number of Poles:
- 1
- Size:
- 1 Inch W x 4.56 Inch D x 6.35 Inch H
- Type:
- Molded Case, Thermal and Fixed Magnetic
- Series:
- ED4
- Interrupting Rating:
- 65 kA at 120 VAC, 22 kA at 277 VAC, 30 kA at 125 VDC (UL)
- Catalog:
- SiemensAG_01698_17_78-17_80_CAT.pdf
- Installation/Operator:
- SiemensAG_00313_INST.pdf
- Country of Origin:
- Mexico
- Mounting:
- Plug-On
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Wire Size:
- 10 to 4 AWG (Copper/Aluminum)
- Approval:
- UL 489, CSA C22.2
MSRP $543.00Surplus $130.50 -
Contact Us For Quote
Siemens LGB1B050B Molded Case Breakers (MCCBs)
MSRP $199.63Surplus $53.90SKU: C15-16818 Brand: Siemens MPN: LGB1B050B UPC: 88762121998 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-16818
- Number of Poles:
- 1
- Country of Origin:
- MEX
- Voltage Rating:
- 347 VAC 50/60 Hertz
- Current Rating:
- 50 A
- Catalog:
- SiemensAG_01796_7_7_7_33_CAT.pdf
- Interrupting Rating:
- 14 kA at 347 VAC
- Application:
- Lighting, Distribution
- Approval:
- UL 489
- Type:
- Molded Case, Low Vage, Thermal and Fixed Magnetic, Very High Breaking Capacity
- Short Description:
- BRKR LGB 50A 1P 277V 65K LD LUG
- Used On:
- P1/P2/P3/P4/P5 Panelboard
MSRP $199.63Surplus $53.90 -
Contact Us For Quote
Siemens NEB1B050B Molded Case Breakers (MCCBs)
MSRP $2,443.00Surplus $659.61SKU: C15-16947 Brand: Siemens MPN: NEB1B050B UPC: 78364355821 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-16947
- Country of Origin:
- DOM
- Number of Poles:
- 1
- Voltage Rating:
- 240/277/347 VAC at 50/60 Hz, 125/250 VDC (UL/CSA), 240 VAC at 50/60 Hz, 125 VDC (IEC)
- Short Description:
- 240/277/347 VAC 50/60 Hz, 125/250 VDC, 50 A, 85 kA, 1-Pole, Thermal Magnetic Trip Unit, Panelboard Circuit Breaker
- Interrupting Rating:
- 85 kA at 240 VAC, 35 kA at 277 VAC, 22 kA at 347 VAC, 35 kA at 125/250 VDC (UL/CSA), 85 kA at 240 VAC, 35 kA at 125 VDC (IEC)
- Current Rating:
- 50 A
- Series:
- NEB
- Type:
- Molded Case, Thermal and Fixed Magnetic
- Application:
- Lighting, Distribution
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Approval:
- UL 489, CSA, IEC 60947-2
MSRP $2,443.00Surplus $659.61 -
Contact Us For Quote
Siemens NGB1B050B Molded Case Breakers (MCCBs)
MSRP $475.21Surplus $128.30SKU: C15-19029 Brand: Siemens MPN: NGB1B050B UPC: 78364341402 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-19029
- Short Description:
- BREAKER NGB 1P 50A 347V 14kA LD LUG
- Installation/Operator:
- SiemensAG_00631_INST.pdf
- Application:
- Lighting, Distribution
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Catalog:
- SiemensAG_01796_7_5_7_7_7_33_7_159_CAT.pdf
- Interrupting Rating:
- 14 kA at 347 VAC
- Type:
- Molded Case, Low Vage, Thermal and Fixed Magnetic
- Approval:
- UL 489
- Current Rating:
- 50 A
- Number of Poles:
- 1
- Voltage Rating:
- 347 VAC 50/60 Hertz
- Country of Origin:
- MEX
MSRP $475.21Surplus $128.30 -
Contact Us For Quote
Siemens Q150 Miniature Circuit Breakers (MCBs)
MSRP $96.00Surplus $8.78Siemens Q150 Miniature Circuit Breakers (MCBs)​ ARCA SKU: C15-4752 Brand: Siemens MPN: Q150 UPC: 66286200392 Shipping Weight: 0.30 lbs. Shipping Height: 3.00 In. Shipping...- SKU:
- C15-4752
- Approval:
- UL 489
- Approval:
- CSA C22.2
- Amps:
- 50 A
- Interrupting Rating:
- 10 kA
- Mounting:
- Plug-On
- Poles:
- 1
- Size:
- 1 Inch W x 3 Inch D x 3-1/8 Inch H
- Terminal Type:
- Load Lug
- Type:
- Miniature
- Type:
- Thermal and Fixed Magnetic Trip
- Used On:
- Loadcenter
- Volts:
- 120 VAC at 50/60 Hz
- Gauge:
- 8 to 6 AWG (Copper)
- Gauge:
- 8 to 4 AWG (Aluminum)
- Short Description:
- 120/240 VAC, 50 A, 10 kA, 1-Pole, 8 to 6 AWG Copper/8 to 4 AWG Aluminum, Load Lug Terminal, Plug-In Mount, QP Frame, Thermal Magnetic Trip Unit, Miniature Circuit Breaker for Load Center
- Series:
- QP
- Data Sheet:
- SiemensAG_06977_1_DATA.pdf
- Installation/Operator:
- SiemensAG_00215_INST.pdf
- TS PIK:
- 126791629
- Number of Poles:
- 1
- Voltage Rating:
- 120 VAC
- Current Rating:
- 50 A
- Wire Size:
- 8 to 6 AWG (Copper), 8 to 4 AWG (Aluminum)
- Catalog:
- SiemensAG_00562_1_41_1_46_1_47_CAT.pdf
- Country of Origin:
- MEX
MSRP $96.00Surplus $8.78
Disclaimer: ARCA Supply is not an authorized distributor, reseller or representative of any manufacturer, brand or product listed. All product names, trademarks, brands and logos are the property of their respective owners. The depiction, description or sale of products featuring these names, trademarks, brands and logos is for identification purposes only and is not intended to indicate any affiliation with or authorization by any rights holder. All items sold by ARCA Supply are covered under ARCA Supply's warranty and not the manufacturer warranty.
