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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Square D QO320VH Miniature Circuit Breakers (MCBs)
MSRP $371.00Surplus $236.74Square D QO320VH Miniature Circuit Breakers (MCBs)​ ARCA SKU: C15-6544 Brand: Square D MPN: QO320VH UPC: 78590137186 Shipping Weight: 0.80 lbs. Shipping Height: 3.00 In. Shipping...- SKU:
- C15-6544
- TS PIK:
- 123131436
- Voltage Rating:
- 120/240 VAC 50/60 Hertz
- Type:
- Common Trip, Miniature, Standard
- Terminal Type:
- Pressure Plate
- Number of Poles:
- 3
- Short Description:
- 120/240 VAC 50/60 Hz, 20 A, 22 kA Interrupt, 3-Pole, 14 to 8 AWG Copper/Aluminum, Plug-In Mount, Pressure Plate Terminal, Standard, Miniature Circuit Breaker
- Mounting:
- Plug-On
- Catalog:
- SchneiderElectric-SquareD_32357_1_2_1_3_CAT.pdf
- Series:
- QO
- Interrupting Rating:
- 22 kA
- Data Sheet:
- SchneiderElectric-SquareD_53574_1_2_DATA.pdf
- Size:
- 2.24 Inch Width x 2.91 Inch Depth x 2.99 Inch Height
- Installation/Operator:
- SchneiderElectric-SquareD_01265_INST.pdf
- Used On:
- QO Load Center, NQ/NQOD Panelboard/OEM Interior/Speed-D Switchboard Distribution Panel
- Current Rating:
- 20 A
- Wire Size:
- 14 to 8 AWG (Copper/Aluminum)
- Country of Origin:
- Mexico
MSRP $371.00Surplus $236.74 -
GENERAL ELECTRIC THQL32020 Miniature Circuit Breakers (MCBs) 3P 20A 240V
MSRP $305.00Surplus $70.64GENERAL ELECTRIC THQL32020 Miniature Circuit Breakers (MCBs) 3P 20A 240V​ ARCA SKU: C15-3349 Brand: GENERAL ELECTRIC MPN: THQL32020 UPC: 78316401301 Shipping Weight: 1.05 lbs. Shipping...- SKU:
- C15-3349
- Approval:
- UL
- Amps:
- 20 A
- Frame:
- Q-Line
- Interrupting Rating:
- 10 kA at 120/240 VAC
- Maximum AC Voltage:
- 240 V
- Poles:
- 3
- Terminal Type:
- Plug-On
- Type:
- Thermal Magnetic
- Type:
- Compact
- Volts:
- 120/240 VAC
- Short Description:
- 240 VAC, 20 A, 10 kA, 3-Pole, 14 to 8 AWG Copper/12 to 8 AWG Aluminum, 1" Plug-In Mount, Box Terminal, Q-Line Frame, Molded Case, Non-Interchangeable/Internal Common Trip, Compact, Fixed Thermal Magnetic, Circuit Breaker
- TS PIK:
- 555089
- Current Rating:
- 20 A
- Number of Poles:
- 3
- Catalog:
- ABBElectrificationProducts-ABBGEIndustrialSolutions_00015_6_8_6_31_CAT.pdf
- Voltage Rating:
- 120/240 VAC
- Installation/Operator:
- ABBElectrificationProducts-ABBGEIndustrialSolutions_00006_INST.pdf
- CAD Drawings:
- ABBElectrificationProducts-ABBGEIndustrialSolutions_00499_1_CAD.pdf
- Mounting:
- Plug-On
- Series:
- THQ
- Maximum AC Voltage Rating:
- 240 V
- Frame Type:
- Q-Line
- Country of Origin:
- United States
MSRP $305.00Surplus $70.64 -
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Murray MP320 Miniature Circuit Breakers (MCBs) 3P 20A 50/60Hz 3Ph EA
MSRP $512.10Surplus $49.46Murray 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 $512.10Surplus $49.46 -
Eaton CH320 Miniature Circuit Breakers (MCBs) 3P 20A 240V EA
MSRP $376.54Surplus $69.07Eaton CH320 Miniature Circuit Breakers (MCBs) 3P 20A 240V EA​ ARCA SKU: C15-2087 Brand: Eaton MPN: CH320 UPC: 782113102023 Shipping Weight: 0.85 lbs. Shipping Height: 4.00 In...- SKU:
- C15-2087
- Approval:
- UL 489
- Approval:
- CSA
- Amps:
- 20 A
- Interrupting Rating:
- 10 kA
- Mounting:
- Plug-On
- Poles:
- 3
- Terminal Type:
- Thermal Magnetic
- Type:
- Common Trip
- Used On:
- CH Series Load Center
- Volts:
- 240 VAC
- Gauge:
- (1) 14 to 6 AWG (Copper/Aluminum)
- Short Description:
- 240 VAC, 20 A, 10 kA, 3-Pole, Plug-On Mount, Common Trip, Thermal Magnetic, Circuit Breaker
- Series:
- CH
- Catalog:
- Eaton_36620_V1T1_36_V1T1_37_CAT.pdf
- Voltage Rating:
- 240 VAC
- Current Rating:
- 20 A
- Wire Size:
- (1) 14 to 6 AWG (Copper/Aluminum)
- Number of Poles:
- 3
- Country of Origin:
- Dominican Republic
MSRP $376.54Surplus $69.07 -
Eaton HQP3020H Miniature Circuit Breakers (MCBs) HQP 3P 20A 240V 50/60Hz 3Ph
MSRP $450.00Surplus $70.97Eaton HQP3020H Miniature Circuit Breakers (MCBs) HQP 3P 20A 240V 50/60Hz 3Ph​ ARCA SKU: C15-3262 Brand: Eaton MPN: HQP3020H UPC: 786679344514 Shipping Weight: 0.95 Shipping Height: 3.00 In...- SKU:
- C15-3262
- Approval:
- UL 489
- Approval:
- CSA
- Amps:
- 20 A
- Interrupting Rating:
- 10000 A at 240 VAC
- Mounting:
- Plug-On
- Poles:
- 3
- Size:
- 3 Inch Width x 3 Inch Depth x 2.8 Inch Height
- Terminal Type:
- Steel Box Lug Standard Load
- Type:
- Fixed Thermal Magnetic
- Type:
- Non-Interchangeable Trip
- Type:
- Miniature
- Volts:
- 240 VAC 60 Hertz
- Gauge:
- 14 to 4 AWG Copper/Aluminum (Standard Load)
- Current Rating:
- 20 A
- Voltage Rating:
- 240 VAC
- Number of Poles:
- 3
- Catalog:
- Eaton_03771_V4T1_2_V4T1_5_V4T1_6_V4T1_46_CAT.pdf
- Wire Size:
- 14 to 4 AWG Copper/Aluminum (Standard Load)
- Short Description:
- EATON QUICkLAG INDUSTRIAL CIRCUIT BREAkER, 20A, THREE-POLE, 240V, 10 kAIC, THERM
- Series:
- HQP
- Country of Origin:
- Dominican Republic
MSRP $450.00Surplus $70.97 -
Siemens Q320 Miniature Circuit Breakers (MCBs) 3P 20A EA
MSRP $329.00Surplus $64.33SKU: C15-6194 Brand: Siemens MPN: Q320 UPC: 66286200430 Shipping Weight: 1.00 lbs. Shipping Height: 2.50 In. Shipping Length: 3.00 In. Shipping Width: 3.00 In...- SKU:
- C15-6194
- TS PIK:
- 21366754
- Catalog:
- SiemensAG_00876_1_12_CAT.pdf
- Voltage Rating:
- 240 V
- Short Description:
- 240 VAC, 20 A, 10 kA Interrupt, 3-Pole, Load Centre Main, Feeder, Thermal Magnetic, Common Trip, Miniature Circuit Breaker
- Type:
- Thermal Magnetic, Common Trip
- Data Sheet:
- SiemensAG_01651_1_DATA.pdf
- Current Rating:
- 20 A
- Size:
- 3.7 Inch Width x 12.8 Inch Depth x 3.4 Inch Height
- Used On:
- Load Centre Main, Feeder
- Interrupting Rating:
- 10 kA
- Number of Poles:
- 3
- Mounting:
- Plug-On
MSRP $329.00Surplus $64.33 -
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Crouse-Hinds BR320 Miniature Circuit Breakers (MCBs) 3P
MSRP $337.57Surplus $92.13Crouse-Hinds BR320 Miniature Circuit Breakers (MCBs) 3P​ ARCA SKU: C15-5663 Brand: Crouse-Hinds MPN: BR320 UPC: 78667636775 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In...- SKU:
- C15-5663
- TS PIK:
- 21493895
- Short Description:
- 240 VAC, 20 A, 10 kA, 3-Pole, Plug-On Mount, Common Trip, Circuit Breaker
- Voltage Rating:
- 240 VAC
- Type:
- Common Trip
- Mounting:
- Plug-On
- Current Rating:
- 20 A
- Catalog:
- Eaton_36620_V1T1_85_CAT.pdf
- Used On:
- Type BR Load Center
- Interrupting Rating:
- 10 kA at 240 VAC
- Size:
- 2.9 Inch Length x 2.9 Inch Width x 2.7 Inch Height
- Series:
- BR
- Wire Size:
- 14 to 4 AWG (Aluminum/Copper)
- Number of Poles:
- 3
MSRP $337.57Surplus $92.13 -
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Crouse-Hinds BR320ST Miniature Circuit Breakers (MCBs)
MSRP $655.18Surplus $244.48SKU: C15-5664 Brand: Crouse-Hinds MPN: BR320ST UPC: Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In. Product...- SKU:
- C15-5664
- TS PIK:
- 115785804
- Short Description:
- 240 VAC, 20 A, 10 kA, 3-Pole, Plug-On Mount, Common Trip, Shunt Trip, Duplex, Thermal Magnetic, Circuit Breaker
- Current Rating:
- 20 A
- Type:
- Thermal Magnetic, Common Trip
- Mounting:
- Plug-On
- Interrupting Rating:
- 10 kA
- Number of Poles:
- 3
- Wire Size:
- 14 to 4 AWG (Aluminum/Copper)
- Catalog:
- Eaton_36620_V1T1_84_CAT.pdf
- Used On:
- BR Series Loadcenter
- Voltage Rating:
- 240 VAC
- Series:
- BR
MSRP $655.18Surplus $244.48 -
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Eaton BR320 Miniature Circuit Breakers (MCBs) BR 3P 20A 240V 50/60Hz 3Ph EA
MSRP $337.57Surplus $103.74Eaton BR320 Miniature Circuit Breakers (MCBs) BR 3P 20A 240V 50/60Hz 3Ph EA​ ARCA SKU: C15-1253 Brand: Eaton MPN: BR320 UPC: 786676367752 Shipping Weight: 0.95 lbs. Shipping...- SKU:
- C15-1253
- Series:
- BR
- Type:
- Bi-Metallic
- Type:
- Thermal
- Approval:
- UL 489
- Size:
- 2.9 Inch Length x 2.9 Inch Width x 2.7 Inch Height
- Volts:
- 240 VAC
- Amps:
- 32 A
- Used On:
- Type BR Load Center
- Poles:
- 3
- Mounting:
- Plug-On
- Interrupting Rating:
- 10 kA at 240 VAC
- Enclosure:
- IP20
- Wire Size:
- 14 to 4 AWG (Aluminum/Copper)
- Short Description:
- 240 VAC, 20 A, 10 kA, 3-Pole, Plug-On Mount, Common Trip
- Catalog:
- Eaton_36620_V1T1_85_CAT.pdf
- Data Sheet:
- Eaton_41028_1-6_DATA.pdf
- TS PIK:
- 21493895
- Current Rating:
- 20 A
- Number of Poles:
- 3
- Voltage Rating:
- 240 VAC
- Country of Origin:
- Dominican Republic
MSRP $337.57Surplus $103.74 -
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Eaton BR320ST Miniature Circuit Breakers (MCBs) BR 3P 20A 120/240V 50/60Hz 3Ph EA
MSRP $733.00Surplus $263.34Eaton BR320ST Miniature Circuit Breakers (MCBs) BR 3P 20A 120/240V 50/60Hz 3Ph EA​ ARCA SKU: C15-1254 Brand: Eaton MPN: BR320ST UPC: 786676003360 Shipping Weight: 1.30 Shipping Height: 3...- SKU:
- C15-1254
- Series:
- BR
- Type:
- Barrier
- Approval:
- UL 489
- Volts:
- 240 VAC
- Amps:
- 32 A
- Used On:
- BR Series Loadcenter
- Poles:
- 3
- Mounting:
- Plug-On
- Interrupting Rating:
- 10 kA
- Wire Size:
- 14 to 4 AWG (Aluminum/Copper)
- Short Description:
- 240 VAC, 20 A, 10 kA, 3-Pole, Plug-On Mount, Common Trip, Shunt Trip, Duplex, Thermal Magnetic
- Catalog:
- Eaton_36620_V1T1_84_CAT.pdf
- Data Sheet:
- Mersen_00019_FB22_FB23_DATA.pdf
- Number of Poles:
- 3
- Voltage Rating:
- 240 VAC
- Current Rating:
- 20 A
MSRP $733.00Surplus $263.34 -
Eaton CHP320 Miniature Circuit Breakers (MCBs) CH 3P 20A 240V 50/60Hz 3Ph
MSRP $1,107.00Surplus $137.11Eaton CHP320 Miniature Circuit Breakers (MCBs) CH 3P 20A 240V 50/60Hz 3Ph​ ARCA SKU: C15-1568 Brand: Eaton MPN: CHP320 UPC: 621037071445 Shipping Weight: 0.86 Shipping Height: 3.38 In...- SKU:
- C15-1568
- Approval:
- UL 489
- Amps:
- 20 A
- Interrupting Rating:
- 10 kA at 240 VAC
- Mounting:
- Plug-On
- Poles:
- 3
- Terminal Type:
- Line Lug
- Type:
- Thermal Magnetic
- Used On:
- CH Series Loadcenter
- Volts:
- 240 VAC
- Gauge:
- 14 to 6 AWG (Copper/Aluminum)
- Short Description:
- 240 VAC, 20 A, 3-Pole, 10 kA, Thermal Magnetic, Circuit Breaker
- Series:
- CH
- Specification/Technical:
- Eaton_47679_1_2_SPEC.pdf
- Voltage Rating:
- 240 VAC
- Wire Size:
- 14 to 6 AWG (Copper/Aluminum)
- Number of Poles:
- 3
- Current Rating:
- 20 A
- Catalog:
- Eaton_00001_V1T1_41_CAT.pdf
MSRP $1,107.00Surplus $137.11 -
GENERAL ELECTRIC THHQL32020 Miniature Circuit Breakers (MCBs)
MSRP $445.79Surplus $117.00GENERAL ELECTRIC THHQL32020 Miniature Circuit Breakers (MCBs)​ ARCA SKU: E30-8024 Brand: GENERAL ELECTRIC MPN: THHQL32020 UPC: 78316411767 Shipping Weight: 1.10 lbs. Shipping...- SKU:
- E30-8024
- Current Rating:
- 20 A
- Voltage Rating:
- 120/240 VAC
- Short Description:
- 240 VAC, 20 A, 22 kA Interrupt, 3-Pole, 14 to 8 AWG Copper/12 to 8 AWG Aluminum Load Lug Terminal, 1" Plug-In Mount, Q-Line Frame, Non-Interchangeable/Internal Common Trip, Compact, Fixed Thermal Magnetic, Miniature Molded Case Circuit Breaker
- Terminal Type:
- Plug-On
- Type:
- Thermal Magnetic, Compact
- CAD Drawings:
- ABBElectrificationProducts-ABBGEIndustrialSolutions_01789_1_CAD.pdf
- Catalog:
- ABBElectrificationProducts-ABBGEIndustrialSolutions_00542_1_7_CAT.pdf
- Interrupting Rating:
- 22 kA at 120/240 VAC
- Number of Poles:
- 3
- Mounting:
- Plug-On
- Frame Type:
- Q-Line
- Approval:
- UL
- Maximum AC Voltage Rating:
- 240 V
MSRP $445.79Surplus $117.00 -
Siemens HED43B020 Molded Case Breakers (MCCBs)
MSRP $3,546.00Surplus $226.54SKU: C15-7452 Brand: Siemens MPN: HED43B020 UPC: 78364321010 Shipping Weight: 3.60 lbs. Shipping Height: 4.00 In. Shipping Length: 8.00 In. Shipping Width: 6.00 In...- SKU:
- C15-7452
- TS PIK:
- 126674914
- Interrupting Rating:
- 100 kA at 240 VAC, 42 kA at 480 VAC (UL)
- Terminal Type:
- Load Lug
- Catalog:
- SiemensAG_01698_17_78-17_80_CAT.pdf
- Type:
- Molded Case, Thermal and Fixed Magnetic
- Size:
- 3 Inch W x 4.56 Inch D x 6.35 Inch H
- Short Description:
- 480 VAC, 20 A at 40 Deg C, 42 kA, 3-Pole, 14 to 10 AWG Copper/12 to 10 AWG Aluminum, Load Lug Terminal, ED Frame, Thermal Magnetic Trip Unit, Molded Case Circuit Breaker
- Series:
- HED4
- Voltage Rating:
- 480 VAC at 50/60 Hz (UL)
- Number of Poles:
- 3
- Installation/Operator:
- SiemensAG_00313_INST.pdf
- Current Rating:
- 20 A
- Country of Origin:
- Mexico
- Approval:
- UL 489, CSA C22.2
- Mounting:
- Plug-On
- Used On:
- P1/P2/P3/P4/P5 Panelboard
- Wire Size:
- 14 to 10 AWG (Copper), 12 to 10 AWG (Aluminum)
MSRP $3,546.00Surplus $226.54 -
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Siemens Q320H Miniature Circuit Breakers (MCBs)
MSRP $538.00Surplus $165.86SKU: C15-10563 Brand: Siemens MPN: Q320H UPC: 78364315642 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10563
- TS PIK:
- 115559543
- Interrupting Rating:
- 22 kA
- Voltage Rating:
- 240 VAC 50/60 Hertz
- Catalog:
- SiemensAG_01796_7_6_7_20_7_26_7_27_CAT.pdf
- Terminal Type:
- Load Lug
- Size:
- 3 Inch Width x 3 Inch Depth x 3 Inch Height
- Number of Poles:
- 3
- Mounting:
- Plug-On
- Data Sheet:
- SiemensAG_10321_1_2_DATA.pdf
- Used On:
- Load Center
- Wire Size:
- 14 to 6 AWG (Copper/Aluminum)
- Installation/Operator:
- SiemensAG_00053_INST.pdf
- Type:
- Low Vage, Circuit Protector, Thermal and Fixed Magnetic, Common Trip
- Current Rating:
- 20 A
- Country of Origin:
- Mexico
MSRP $538.00Surplus $165.86 -
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Square D QO320 Miniature Circuit Breakers (MCBs) 3P 20A 240V
MSRP $248.00Surplus $102.41Square D QO320 Miniature Circuit Breakers (MCBs) 3P 20A 240V​ ARCA SKU: C15-6380 Brand: Square D MPN: QO320 UPC: 78590140068 Shipping Weight: 2.55 lbs. Shipping Height: 4.00 In...- SKU:
- C15-6380
- TS PIK:
- 124023847
- Mounting:
- Plug-On
- Type:
- Common Trip, Miniature, Standard
- Series:
- QO
- Terminal Type:
- Pressure Plate
- Interrupting Rating:
- 5/10 kA
- Size:
- 2.24 Inch Width x 2.91 Inch Depth x 2.99 Inch Height
- Short Description:
- 120/240 VAC 50/60 Hz, 48 VDC, 20 A, 5/10 kA Interrupt, 3-Pole, 14 to 8 AWG Copper/Aluminum, Plug-In Mount, Pressure Plate Terminal, Standard, Miniature Circuit Breaker
- Installation/Operator:
- SchneiderElectric-SquareD_01265_INST.pdf
- Voltage Rating:
- 120/240 VAC
- Catalog:
- SchneiderElectric-SquareD_32357_1_2_1_3_CAT.pdf
- Wire Size:
- 14 to 8 AWG (Copper/Aluminum)
- Used On:
- QO Load Center, NQ/NQOD Panelboard/OEM Interior/Speed-D Switchboard Distribution Panel
- Number of Poles:
- 3
- Current Rating:
- 20 A
- Data Sheet:
- SchneiderElectric-SquareD_53568_1_2_DATA.pdf
- Country of Origin:
- United States
MSRP $248.00Surplus $102.41 -
Square D QO3201021 Miniature Circuit Breakers (MCBs)
MSRP $437.00Surplus $334.13SKU: C15-10902 Brand: Square D MPN: QO3201021 UPC: 78590149409 Shipping Weight: 0.00 lbs. Shipping Height: 0.00 In. Shipping Length: 0.00 In. Shipping Width: 0.00 In...- SKU:
- C15-10902
- TS PIK:
- 111089501
- Terminal Type:
- Pressure Plate
- Short Description:
- 120/240 VAC 50/60 Hz, 20 A, 10 kA Interrupt, 3-Pole, 14 to 8 AWG Aluminum/Copper, Plug-On Mount, Pressure Plate Terminal, Standard, AC Shunt Trip, Miniature Circuit Breaker
- Wire Size:
- 14 to 8 AWG (Aluminum/Copper), (2) 14 to 10 AWG (Copper)
- Catalog:
- SchneiderElectric-SquareD_03264_1_3_1_9_CAT.pdf
- Mounting:
- Plug-On
- Current Rating:
- 20 A
- Data Sheet:
- SchneiderElectric-SquareD_15027_1_2_DATA.pdf
- Number of Poles:
- 3
- Interrupting Rating:
- 10 kA
- CAD Drawings:
- SchneiderElectric-SquareD_03058_1_CAD.pdf
- Size:
- 2.25 Inch W x 2.91 Inch D x 3 Inch H
- Used On:
- QO Load Center, NQOD Panelboard, OEM Interior/Speed-D Switchboard Distribution Panel
- Voltage Rating:
- 240 VAC at 50/60 Hz
- Type:
- Common Trip, Thermal Magnetic
MSRP $437.00Surplus $334.13
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