Circuit Breakers

Eaton BR thermal magnetic circuit breaker,Type BR 1-Inch plug-on circuit breaker,20 A,10 kAIC,Single-pole,120/240V,BR,#14-4 AWG Cu/Al,Q1,BR,Type BR loadcenters Molded Case Circuit Breakers
Mini circuit breaker, Homeline, 20A, 1 pole, 120/240VAC, 10kA AIR, standard type, plug in, UL Miniature Circuit Breakers
Multi 9 - C60BP - MCB - 1P - 20 A - C Curve - 277 V - 10 kA - UL 489 Low Voltage Circuit Breakers
Branch Circuit Breaker, GFCI 1-Pole 20A 120V, 10Ka Interrupt Rating GFCI Circuit Breakers
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  • Eaton
  • Schneider Electric
  • Siemens
Siemens
Low Voltage Molded Case Circuit Breakers Panelboard Mounting 480V Circuit Breakers - 1-pole, TM - NGB, 14KAIC, 347VAC are Circuit Protection Molded Case Circuit Breakers. BREAKER NGB 1-POLE20A 347V 14KA NO LUGS
MFR: Siemens
MFR #: NGB1B020
UPC: 783643553101
Item #: 237685
Available to Order
$520.23 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE PANELBOARD MOUNT G FRAME CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP. UL LISTED NGB FRAME WITH STANDARD BREAKING CAPACITY. 20A 2-POLE (14KAIC AT 600Y/347V) (25KAIC AT 480Y/277V). SPECIAL FEATURES MOUNTS ON PANELBOARD, LOAD SIDE LUGS ONLY (TC1Q1) WIRE RANGE 14 - 10 AWS (CU/AL). DIMENSIONS (W x H x D) IN 2 x 5.4 x 2.8.
MFR: Siemens
MFR #: NGB2B020B
UPC: 783643414112
Item #: 394527
Available to Order
$1587.08 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE G FRAME CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP. UL LISTED NGG FRAME WITH STANDARD BREAKING CAPACITY. 40A 3-POLE (14KAIC AT 600Y/347V)(25KAIC AT 480V). SPECIAL FEATURES MOUNTS ON DIN RAIL / SCREW, LINE AND LOAD SIDE LUGS (TC1GG20) WIRE RANGE 8 - 1/0 AWS (CU/AL). DIMENSIONS (W x H x D) IN 3 x 5.4 x 2.8.
MFR: Siemens
MFR #: NGG3B040L
UPC: 783643413832
Item #: 1273493
Available to Order
$2639.27 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Type QP/MP, 2-Pole, 120/240VAC are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type QP/MP Application Electrical Distribution Standard UL 489 Voltage Rating 120/240V Amperage Rating 80A Trip Range Thermal Magnetic Interrupt Rating 22 AIC Number Of Poles 2P
MFR: Siemens
MFR #: Q280H
UPC: 783643226142
Item #: 824829
Available to Order
$590.88 each
Availability
Location Available Qty
Siemens
BREAKER 45A 2P 120/240V 22K BLH HIGH INT.
MFR: Siemens
MFR #: B245H
UPC: 783643000926
Item #: 235326
Available to Order
$392.13 each
Availability
Location Available Qty
Siemens
Low Voltage Molded Case Circuit Breakers Panelboard Mounting 240V AFCI Circuit Breakers - 2-Pole, AFCI - BAF, 10KAIC, 120/240VAC are Circuit ProtectionMolded Case Circuit Breakers. Type BAF Special Features CAFCL Application Electrical Distribution Standard UL 489 Voltage Rating 120/240V Amperage Rating 20A Trip Range Thermal Magnetic Number Of Poles 2P Connection PLUG-IN Material COMPOSITE Length 3 Width 2 Height 3.5
MFR: Siemens
MFR #: B220AFC
UPC: 040892150698
Item #: 394894
Available to Order
$881.69 each
Availability
Location Available Qty
Siemens
Circuit-breaker sz s00, for motor protection, class 10, a-release 2.8...4a, n-release 52a, screw connection, standard sw. capacity
MFR: Siemens
MFR #: 3RV20111EA10
UPC: 662643923926
Item #: 725197
Available to Order
$358.88 each
Availability
Location Available Qty
Siemens
Circuit-breaker sz s00, for motor protection, class 10, a-release 11...16a, n-release 208a, screw connection, standard sw. capacity
MFR: Siemens
MFR #: 3RV20114AA10
UPC: 662643924220
Item #: 614968
Available to Order
$417.50 each
Availability
Location Available Qty
Siemens
Circuit-breaker sz s00, for motor protection, class 10, a-rel. 1.4...2a, n-release 26a, spring-l. connection standard sw. capacity
MFR: Siemens
MFR #: 3RV20111BA20
UPC: 662643921854
Item #: 1229083
Available to Order
$358.88 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Main Breakers - Type QS Breakers are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type QSH Application Electrical Distribution Standard UL 489 Voltage Rating 120/240V Amperage Rating 100A Trip Range Thermal Magnetic Interrupt Rating 22 AIC Number Of Poles 2P
MFR: Siemens
MFR #: QS2100H
UPC: 783087935280
Item #: 255194
Available to Order
$506.00 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Main Breakers - Type QS Breakers are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type QSH Application Electrical Distribution Standard UL 489 Voltage Rating 120/240V Amperage Rating 150A Trip Range Thermal Magnetic Interrupt Rating 22 AIC Number Of Poles 2P
MFR: Siemens
MFR #: QS2150H
UPC: 783087935303
Item #: 271335
Available to Order
$506.00 each
Availability
Location Available Qty
Siemens
Circuit breaker size S00 for motor protection, CLASS 10 A-release 2.2...3.2 A Nrelease 42 A screw terminal Standard switching capacityCircuit breaker size S00for motor protection, CLASS 10 A-release 2.2...3.2 A N release 42 A screw terminal Standard switching capacity
MFR: Siemens
MFR #: 3RV20111DA10
UPC: 662643921939
Item #: 614973
Available to Order
$358.88 each
Availability
Location Available Qty
Siemens
ACC_CIRCUIT_BREAKER 3RA2921-1AA00-Link Module_3RA29 21-1AA00
MFR: Siemens
MFR #: 3RA29211AA00
UPC: 662643904734
Item #: 1088947
Available to Order
$30.75 each
Availability
Location Available Qty
Siemens
Circuit-breaker sz s00, for motor protection, class 10, a-rel.1.1...1.6a, n-release 21a, spring-l. connection standard sw. capacity
MFR: Siemens
MFR #: 3RV20111AA20
UPC: 662643921809
Item #: 1244452
Available to Order
$344.52 each
Availability
Location Available Qty
Siemens
Circuit-breaker sz s00, for motor protection, class 10, a-rel. 0.55...0.8a, n-release10 a screw connection, standard sw. capacity
MFR: Siemens
MFR #: 3RV20110HA10
UPC: 662643921632
Item #: 1269471
Available to Order
$324.19 each
Availability
Location Available Qty
Siemens
Circuit-breaker sz s00, for motor protection, class 10, a-rel.1.8...2.5a, n-release 33a, screw connection, standard sw. capacity
MFR: Siemens
MFR #: 3RV20111CA10
UPC: 662643921885
Item #: 821359
Available to Order
$358.88 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Main Breakers - Type QS Breakers are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type QS Application Electrical Distribution Standard UL 489 Voltage Rating120/240V Amperage Rating 125A Trip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles 2P
MFR: Siemens
MFR #: QS2125
UPC: 783087935235
Item #: 284906
Available to Order
$254.15 each
Availability
Location Available Qty
Siemens
Circuit-breaker sz s00, for motor protection, class 10, a-rel. 0.14...0.2a, n-release2.6a, screw connection, standard sw. capacity
MFR: Siemens
MFR #: 3RV20110BA10
UPC: 662643921335
Item #: 440634
Available to Order
$300.26 each
Availability
Location Available Qty
Siemens
Switch_MOTOR 3RV2021-4CA10-3RV2021-4CA10_17...22A_22A_460V
MFR: Siemens
MFR #: 3RV20214CA10
UPC: 662643924374
Item #: 889097
Available to Order
$461.76 each
Availability
Location Available Qty
Siemens
Switch_MOTOR 3RV2021-4BA10-3RV2021-4BA10_14...20A_20A_460V
MFR: Siemens
MFR #: 3RV20214BA10
UPC: 662643924329
Item #: 796762
Available to Order
$434.24 each
Availability
Location Available Qty
Siemens
3RA1921-1da00 3ra-verbindungsbaustein, elektrisch und mechanisch, fuer 3RV1.2 und 3rt101 AC- und DCbetaetigung (einzelstueckverpackung)
MFR: Siemens
MFR #: 3RA1921-1DA00
UPC: 040892731057
Item #: 686640
Available to Order
$42.58 each
Availability
Location Available Qty
Siemens
Circuit-breaker sz s00, for motor protection, class 10, a-release 9..12.5a, n-release 156a, screw connection, standard sw. capacity
MFR: Siemens
MFR #: 3RV20111KA10
UPC: 662643924176
Item #: 614985
Available to Order
$401.94 each
Availability
Location Available Qty
Siemens
24V DC STORED ENERGY OPERATOR VL160X, VL160, VL250, ACCESSORY FOR
MFR: Siemens
MFR #: 3VL9300-3MJ00
UPC: 040892626094
Item #: 1252490
Available to Order
$15554.30 each
Availability
Location Available Qty
Siemens
Circuit-breaker sz s0, for motor protection, class 10, a-release 27...32a, n-release 400a, screw connection, standard sw. capacity
MFR: Siemens
MFR #: 3RV20214EA10
UPC: 662643924473
Item #: 889099
Available to Order
$668.71 each
Availability
Location Available Qty
Siemens
CIRCUIT BREAKER 230V 6KA,1+N-POLE C, 1A, D=70MM
MFR: Siemens
MFR #: 5SY6501-7
UPC: 040892554991
Item #: 1138408
Available to Order
$97.01 each
Availability
Location Available Qty
Siemens
Switch motor -3RV2011-1ka15
MFR: Siemens
MFR #: 3RV20111KA15
UPC: 662643924183
Item #: 540818
Available to Order
$483.29 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Main Breakers - Type QS Breakers are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type HQS Application Electrical Distribution Standard UL 489 Voltage Rating 120/240V Amperage Rating 150A Trip Range Thermal Magnetic Interrupt Rating 65 AIC Number Of Poles 2P
MFR: Siemens
MFR #: QS2150HH
UPC: 783087935525
Item #: 1224633
Available to Order
$701.50 each
Availability
Location Available Qty
Siemens
Circuit-breaker sz s00, for motor protection, class 10, a-release 0.11...0.16a,n-release2.1a screw connection, standard sw. capacity
MFR: Siemens
MFR #: 3RV20110AA10
UPC: 662643919639
Item #: 1293379
Available to Order
$300.26 each
Availability
Location Available Qty
Siemens
Circuit-breaker sz s00, for motor protection, class 10, a-release 4.5...6.3a, n-release 82a screw connection, standard sw. capacity w. transverse aux. switch 1NO+1NC
MFR: Siemens
MFR #: 3RV20111GA15
UPC: 662643924039
Item #: 1094295
Available to Order
$441.42 each
Availability
Location Available Qty
Siemens
CIRCUIT BREAKER 230/400V 10KA, 1-POLE, C, 6A, D=70MM
MFR: Siemens
MFR #: 5SY4106-7
UPC: 040892584479
Item #: 83204
Available to Order
$69.81 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Main Breakers - Type QS Breakers are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type QSH Application Electrical Distribution Standard UL 489 Voltage Rating 120/240V Amperage Rating 125A Trip Range Thermal Magnetic Interrupt Rating 22 AIC Number Of Poles 2P
MFR: Siemens
MFR #: QS2125H
UPC: 783087935297
Item #: 917579
Available to Order
$506.00 each
Availability
Location Available Qty
Siemens
Circuit-breaker sz s00, for transformer prot. a-release 2.2...3.2a, n-release 65a screw connection, standard sw. capacity
MFR: Siemens
MFR #: 3RV24111DA10
UPC: 662643922295
Item #: 1138425
Available to Order
$397.16 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Main Breakers - Type QS Breakers are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type QSHH Application Electrical Distribution Standard UL 489 Voltage Rating 120/240V Amperage Rating 125A Trip Range Thermal Magnetic Interrupt Rating 42AIC Number Of Poles 2P
MFR: Siemens
MFR #: QSH2125
UPC: 783087935341
Item #: 1294830
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Siemens
116264A16 EQ9684
MFR: Siemens
MFR #: MBK175
UPC: 662643673937
Item #: 238162
Available to Order
$1182.42 each
Availability
Location Available Qty
Siemens
Switch_MOTOR 3RV2021-4AA10-3RV2021-4AA10_11...16A_16A_460V
MFR: Siemens
MFR #: 3RV20214AA10
UPC: 662643924275
Item #: 723323
Available to Order
$434.24 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Duplex, Triplex, Quadplex are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. BREAKER(1)30A 2P/(1)20A 2P 10K NON-CTLQT
MFR: Siemens
MFR #: Q23020CT2NC
UPC: 887621024352
Item #: 522480
In Stock -
$397.88 each
Availability
Location Available Qty
Siemens
1/2 IN. TWIN CIRCUIT BREAKER
MFR: Siemens
MFR #: Q2030NC
UPC: 662643717662
Item #: 128612
Available to Order
$438.20 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE PANELBOARD MOUNT G FRAME CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP. UL LISTED LGB FRAME WITH VERY HIGH BREAKING CAPACITY. 40A 3-POLE (14KAIC AT 600Y/347V) (65KAIC AT 480Y/277V). SPECIAL FEATURES MOUNTS ON PANELBOARD,LOAD SIDE LUGS ONLY (TC1GG20) WIRE RANGE 8 - 1/0 AWS (CU/AL). DIMENSIONS (W x Hx D) IN 3 x 5.4 x 2.8.
MFR: Siemens
MFR #: LGB3B040B
UPC: 887621220266
Item #: 394453
Available to Order
$3065.62 each
Availability
Location Available Qty
Siemens
Switch_MOTOR 3RV2021-1KA10-3RV2021-1KA10_9...12.5A_12.5A_460V
MFR: Siemens
MFR #: 3RV20211KA10
UPC: 040892940695
Item #: 675043
Available to Order
$417.50 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE PANELBOARD MOUNT G FRAME CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP. UL LISTED LGB FRAME WITH VERY HIGH BREAKING CAPACITY. 100A 3-POLE (14KAIC AT 600Y/347V) (65KAIC AT 480Y/277V). SPECIAL FEATURES MOUNTS ON PANELBOARD, LOAD SIDE LUGS ONLY (TC1GG20) WIRE RANGE 8 - 1/0 AWS (CU/AL). DIMENSIONS (W x H x D) IN 3 x 5.4 x 2.8.
MFR: Siemens
MFR #: LGB3B100B
UPC: 887621220334
Item #: 394459
Available to Order
$3216.21 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE PANELBOARD MOUNT G FRAME CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP. UL LISTED LGB FRAME WITH VERY HIGH BREAKING CAPACITY. 30A 1-POLE (14KAIC AT 347V) (65KAIC AT 277V). SPECIAL FEATURES MOUNTS ON PANELBOARD, LOAD SIDELUGS ONLY (TC1Q1) WIRE RANGE 14 - 10 AWS (CU/AL). DIMENSIONS (W x H x D) IN 1 x5.4 x 2.8.
MFR: Siemens
MFR #: LGB1B030B
UPC: 887621219949
Item #: 394443
Available to Order
$1127.48 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE PANELBOARD MOUNT G FRAME CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP. UL LISTED LGB FRAME WITH VERY HIGH BREAKING CAPACITY. 90A 3-POLE (14KAIC AT 600Y/347V) (65KAIC AT 480Y/277V). SPECIAL FEATURES MOUNTS ON PANELBOARD,LOAD SIDE LUGS ONLY (TC1GG20) WIRE RANGE 8 - 1/0 AWS (CU/AL). DIMENSIONS (W x Hx D) IN 3 x 5.4 x 2.8.
MFR: Siemens
MFR #: LGB3B090B
UPC: 887621220327
Item #: 394458
Available to Order
$3216.21 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE G FRAME CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP. UL LISTED LGG FRAME WITH VERY HIGH BREAKING CAPACITY. 100A 3-POLE (14KAIC AT 600Y/347V) (65KAIC AT 480V). SPECIAL FEATURES MOUNTS ON DIN RAIL / SCREW, LINE AND LOAD SIDE LUGS (TC1GG20) WIRE RANGE 8 - 1/0 AWS (CU/AL). DIMENSIONS (W x H x D) IN 3 x 5.4 x 2.8.
MFR: Siemens
MFR #: LGG3B100L
UPC: 887621279271
Item #: 582818
Available to Order
$4257.64 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE PANELBOARD MOUNT G FRAME CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP. UL LISTED LGB FRAME WITH VERY HIGH BREAKING CAPACITY. 25A 3-POLE (14KAIC AT 600Y/347V) (65KAIC AT 480Y/277V). SPECIAL FEATURES MOUNTS ON PANELBOARD,LOAD SIDE LUGS ONLY (TC1Q1) WIRE RANGE 14 - 10 AWS (CU/AL). DIMENSIONS (W x H xD) IN 3 x 5.4 x 2.8.
MFR: Siemens
MFR #: LGB3B025B
UPC: 887621220235
Item #: 394451
Available to Order
$3065.62 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Duplex, Triplex, Quadplex are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. BREAKER(2)30A 2P 120/240V 10K NON-CTL QT
MFR: Siemens
MFR #: Q23030CT2NC
UPC: 887621024512
Item #: 563762
Available to Order
$397.88 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE PANELBOARD MOUNT G FRAME CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP. UL LISTED LGB FRAME WITH VERY HIGH BREAKING CAPACITY. 20A 2-POLE (14KAIC AT 600Y/347V) (65KAIC AT 480Y/277V). SPECIAL FEATURES MOUNTS ON PANELBOARD,LOAD SIDE LUGS ONLY (TC1Q1) WIRE RANGE 14 - 10 AWS (CU/AL). DIMENSIONS (W x H xD) IN 2 x 5.4 x 2.8.
MFR: Siemens
MFR #: LGB2B020B
UPC: 887621220075
Item #: 394446
Available to Order
$2523.88 each
Availability
Location Available Qty
Siemens
Circuit breaker size S0 for motor protection, Class 10 A-release 7...10 A N release 130 A screw terminal Standard switching capacity
MFR: Siemens
MFR #: 3RV20211JA10
UPC: 040892940688
Item #: 1024778
Available to Order
$417.50 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE PANELBOARD MOUNT G FRAME CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP. UL LISTED LGB FRAME WITH VERY HIGH BREAKING CAPACITY. 45A 3-POLE (14KAIC AT 600Y/347V) (65KAIC AT 480Y/277V). SPECIAL FEATURES MOUNTS ON PANELBOARD,LOAD SIDE LUGS ONLY (TC1GG20) WIRE RANGE 8 - 1/0 AWS (CU/AL). DIMENSIONS (W x Hx D) IN 3 x 5.4 x 2.8.
MFR: Siemens
MFR #: LGB3B045B
UPC: 887621220273
Item #: 394454
Available to Order
$3065.62 each
Availability
Location Available Qty

About Circuit Breakers

Circuit breakers are a critical component of electrical systems, protecting them against overload or short-circuiting. These devices shut off power when levels exceed a safety threshold in order to prevent damage to equipment or personnel. There are a variety of types of circuit breakers to suit different applications, including miniature, molded case, low voltage, GFCI, and AFCI.