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 $53.09Surplus $10.11Murray 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 $53.09Surplus $10.11 -
Siemens BQ1B050 Miniature Circuit Breakers (MCBs) 50A 120V
MSRP $116.39Surplus $38.03Siemens 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
MSRP $116.39Surplus $38.03 -
Siemens Q150 Miniature Circuit Breakers (MCBs)
MSRP $130.68Surplus $11.95Siemens 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
MSRP $130.68Surplus $11.95
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