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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  • Siemens
Siemens
PADLOCKING DEVICE FOR 1in TWIN BREAKERS 1P BL FRAMES SIEMENS
MFR: Siemens
MFR #: ECPLD1
UPC: 783643454828
Item #: 53163
Available to Order
$21.08 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. Type QT Application Electrical Distribution Standard UL 489 Voltage Rating 120/240V Amperage Rating 30-20A Trip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles 2P
MFR: Siemens
MFR #: Q23020CT2
UPC: 783643083936
Item #: 135459
Available to Order
$274.29 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 70A Trip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles 2P
MFR: Siemens
MFR #: Q270
UPC: 783643148666
Item #: 34858
Available to Order
$263.71 each
Availability
Location Available Qty
Siemens
BRKR 50A 2P 120/240V 10K QPFB GFCI 5MA
MFR: Siemens
MFR #: QF250A
UPC: 887621216757
Item #: 594839
Available to Order
$651.95 each
Availability
Location Available Qty
Siemens
BREAKER BQD 3P 60A 480VAC 14KA 10 KAIC
MFR: Siemens
MFR #: BQD360
UPC: 783643277427
Item #: 183081
Available to Order
$1175.40 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. Type QT Application Electrical Distribution Standard UL 489 Voltage Rating 120/240V Amperage Rating 30-30A Trip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles 2P
MFR: Siemens
MFR #: Q23030CT2
UPC: 783643083943
Item #: 29890
Available to Order
$274.29 each
Availability
Location Available Qty
Siemens
BREAKER BQD 3P 100A 480VAC 14KA 10 KAIC
MFR: Siemens
MFR #: BQD3100
UPC: 783643277465
Item #: 99068
Available to Order
$1588.06 each
Availability
Location Available Qty
Siemens
Low Voltage Molded Case Circuit Breakers General Purpose MCCBs - Type BQ, 2-Pole, 120/240VAC are Circuit Protection Molded Case Circuit Breakers. 2-Pole Common-Trip circuit breaker type BQ. Rated 120/240V (030A) (AIR 10 kA). Special features Load side lugs are included.
MFR: Siemens
MFR #: BQ2B030
UPC: 783643102422
Item #: 181984
Available to Order
$200.46 each
Availability
Location Available Qty
Siemens
Low Voltage Molded Case Circuit Breakers Panelboard Mounting 240V Circuit Breakers - Type BL, 3-Pole, 240VAC are Circuit Protection Molded Case CircuitBreakers. Type BL Application Electrical Distribution Standard UL 489 Voltage Rating 240V Amperage Rating 70A Trip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles 3P
MFR: Siemens
MFR #: B370
UPC: 783643263772
Item #: 107904
Available to Order
$786.21 each
Availability
Location Available Qty
Siemens
BREAKER 15A 1P 120V 10K QPF2 GFCI 5MA
MFR: Siemens
MFR #: QF115A
UPC: 887621216511
Item #: 524987
Available to Order
$326.77 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 90A Trip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles 2P
MFR: Siemens
MFR #: Q290
UPC: 783643148673
Item #: 62496
Available to Order
$379.38 each
Availability
Location Available Qty
Siemens
BREAKER 15/20A 1P 120V 10K QT DUPLEX 10 KAIC
MFR: Siemens
MFR #: Q1520
UPC: 783643148253
Item #: 22856
Available to Order
$136.15 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 15/15A 1P 120V 10K QT NON-CTL
MFR: Siemens
MFR #: Q1515NC
UPC: 783643156609
Item #: 190400
Available to Order
$227.36 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Type QP/MP, 3-Pole, 240VAC are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type QP/MP Application Electrical Distribution Standard UL 489 Voltage Rating 240V Amperage Rating 80A Trip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles 3P
MFR: Siemens
MFR #: Q380
UPC: 783643156760
Item #: 42404
Available to Order
$681.43 each
Availability
Location Available Qty
Siemens
Low Voltage Molded Case Circuit Breakers Sentron Molded Case Circuit Breakers - MCCB Locking and Interlocking Accessory are Circuit Protection Molded Case Circuit Breakers. BREAKER BQD/NGB 2-POLEHNDLE TIE AND PADLOCK
MFR: Siemens
MFR #: BQDHT2
UPC: 662643158908
Item #: 184201
Available to Order
$67.47 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Main Breakers - Family G Mainsare Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Load center conversion kit 1-Phase main breaker.. Rated (150 - 225A) AIR 22 KA.
MFR: Siemens
MFR #: MBK150A
UPC: 783643387997
Item #: 133019
Available to Order
$1088.57 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 100A Trip Range Thermal Magnetic Interrupt Rating 22 AIC Number Of Poles 2P
MFR: Siemens
MFR #: Q2100H
UPC: 783643156395
Item #: 116350
Available to Order
$590.88 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. Type QT Application Electrical Distribution Standard UL 489 Voltage Rating 120/240V Amperage Rating 30-50A Trip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles 2P
MFR: Siemens
MFR #: Q23050CT2
UPC: 783643083981
Item #: 151152
Available to Order
$274.29 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 125A Trip Range Thermal Magnetic Interrupt Rating 22 AIC Number Of Poles 2P
MFR: Siemens
MFR #: Q2125H
UPC: 783643156401
Item #: 284891
Available to Order
$2005.29 each
Availability
Location Available Qty
Siemens
BRKR 30A 2P 120/240V 10K QPFB GFCI 5MA
MFR: Siemens
MFR #: QF230A
UPC: 887621216696
Item #: 594858
Available to Order
$651.95 each
Availability
Location Available Qty
Siemens
PADLOCKING DEVICE FOR 1 IN. BREAKERS
MFR: Siemens
MFR #: ECPLD3
UPC: 783087906266
Item #: 235253
Available to Order
$33.60 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. 100A 3-POLE (14KAIC AT 600Y/347V) (25KAIC 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 #: NGB3B100B
UPC: 783643414372
Item #: 103262
Available to Order
$2216.83 each
Availability
Location Available Qty
Siemens
Low Voltage Molded Case Circuit Breakers Panelboard Mounting 240V Circuit Breakers - Type BL, 3-Pole, 240VAC are Circuit Protection Molded Case CircuitBreakers. Type BL Application Electrical Distribution Standard UL 489 Voltage Rating 240V Amperage Rating 45A Trip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles 3P
MFR: Siemens
MFR #: B345
UPC: 783643263741
Item #: 149657
Available to Order
$645.39 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE SENTRON MOLDED CASE CIRCUIT BREAKER WITH THERMAL - MAGNETICTRIP UNIT. STANDARD 40 DEG C BREAKER ED FRAME WITH STANDARD BREAKING CAPACITY. 20A 1-POLE (22KAIC AT 277V). NON-INTERCHANGEABLE TRIP UNIT. SPECIAL FEATURES LINE AND LOAD SIDE LUGS (SA1E025) WIRE RANGE 14 - 10AWG (CU) / 12 - 10AWG (AL). DIMENSIONS (W x H x D) IN 1.00 x 6.4 x 3.92.
MFR: Siemens
MFR #: ED41B020L
UPC: 783643089860
Item #: 465569
Available to Order
$578.90 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Main Breakers - Family G Mainsare Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type EQ Application Electrical Distribution Standard UL 489 Voltage Rating 120/240V Amperage Rating 75A Trip Range Thermal Magnetic Interrupt Rating 22 AIC Number Of Poles 2P
MFR: Siemens
MFR #: MBK175A
UPC: 783643619883
Item #: 96639
Available to Order
$1088.57 each
Availability
Location Available Qty
Siemens
BRKR BAF2 AFCI 1P 120V 20A 10KA
MFR: Siemens
MFR #: BA120AFC
UPC: 887621215002
Item #: 247138
Available to Order
$321.22 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Main Breakers - Family G Mainsare Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Load center conversion kit 1-Phase main breaker.. Rated (100 - 125A) AIR 22 KA.
MFR: Siemens
MFR #: MBK100A
UPC: 783643387980
Item #: 553
Available to Order
$431.59 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. Type QT Application Electrical Distribution Standard UL 489 Voltage Rating 120/240V Amperage Rating 30-40A Trip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles 2P
MFR: Siemens
MFR #: Q23040CT2
UPC: 783643434769
Item #: 109082
Available to Order
$274.29 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Main Breakers - Branch Main Breakers Non-reversible are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type QN Application Electrical Distribution Standard UL489 Voltage Rating 120/240V Amperage Rating 200A Trip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles 2P
MFR: Siemens
MFR #: QN2200
UPC: 783643204294
Item #: 51600
Available to Order
$881.69 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Accessories are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. RED PADLOCKNG DEVICE FOR 1 ( &<) TWIN BRKRS
MFR: Siemens
MFR #: ECPLD1R
UPC: 783643496361
Item #: 677163
Available to Order
$21.08 each
Availability
Location Available Qty
Siemens
BRKR 40A 2P 120/240V 10K QPFB GFCI 5MA
MFR: Siemens
MFR #: QF240A
UPC: 887621216726
Item #: 723812
Available to Order
$651.95 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)40A 2P 120/240V 10K NON-CTLQT
MFR: Siemens
MFR #: Q24040CT2NC
UPC: 887621024505
Item #: 1212191
Available to Order
$397.88 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Accessories are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MP-T Application Electrical Distribution StandardUL 489 Trip Range Thermal Magnetic Number Of Poles 1 Breaker
MFR: Siemens
MFR #: ECQML12
UPC: 783643470620
Item #: 10479
Available to Order
$64.67 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Accessories are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type QP Application Electrical Distribution Standard UL 489 Trip Range Thermal Magnetic Interrupt Rating 22 AIC Number Of Poles 2P
MFR: Siemens
MFR #: ECQTH3
UPC: 783643470644
Item #: 95593
Available to Order
$8.15 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Accessories are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type QT Application Electrical Distribution Standard UL 489 Trip Range Thermal Magnetic Interrupt Rating 22 AIC Number Of Poles 2 QT Duplex Breakers
MFR: Siemens
MFR #: ECQTH2
UPC: 783643470637
Item #: 122106
Available to Order
$9.27 each
Availability
Location Available Qty
Siemens
BREAKER 200A 2P 120/240V 42KA QSHH
MFR: Siemens
MFR #: QSH2200
UPC: 783087935365
Item #: 1112723
Available to Order
$561.20 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)40A 2P/(1)30A 2P 10K NON-CTLQT
MFR: Siemens
MFR #: Q24030CT2NC
UPC: 887621024376
Item #: 1212193
Available to Order
$397.88 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)20A 2P 120/240V 10K NON-CTLQT
MFR: Siemens
MFR #: Q22020CT2NC
UPC: 887621024321
Item #: 218919
Available to Order
$397.88 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Main Breakers - Family G Mainsare Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Load center conversion kit 1-Phase main breaker.. Rated (200 - 225A) AIR 22 KA.
MFR: Siemens
MFR #: MBK200A
UPC: 783643388017
Item #: 94592
In Stock -
$1088.57 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Miniature Circuit Breakers GFCI - Equipment Protect 2-pole plug-on 10k are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Sub Brand N/A Type QE Special Features N/A Application Electrical Distribution Standard UL 489 Voltage Rating 120/240V Amperage Rating 40A Load Rating N/A Frequency Rating N/A Phase N/A Frame N/A Trip Type N/A Trip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles 2P
MFR: Siemens
MFR #: QE240
UPC: 783643305922
Item #: 1127685
Available to Order
$802.64 each
Availability
Location Available Qty
Siemens
PADLOCKING DEVICE FOR 2IN QUAD BREAKERS 2P BL FRAMES SIEMENS
MFR: Siemens
MFR #: ECPLD2
UPC: 783643454835
Item #: 77689
Available to Order
$43.36 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE PLUG-IN CIRCUIT BREAKER. 15A 1-POLE (10kA AT 120V) PERSONELPROTECTION GROUND-FAULT CLASS 5mA TYPE QPF2N BREAKER.
MFR: Siemens
MFR #: QF115AN
UPC: 804766906695
Item #: 1128890
Available to Order
$326.77 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE PLUG-IN CIRCUIT BREAKER. 20A 1-POLE (10kA AT 120V) COMBINATION TYPE ARC-FAULT TYPE QAF2N BREAKER.
MFR: Siemens
MFR #: QA120AFCN
UPC: 804766906671
Item #: 1128889
Available to Order
$113.42 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE PLUG-IN CIRCUIT BREAKER. 15A 1-POLE (10kA AT 120V) COMBINATION TYPE ARC-FAULT TYPE QAF2N BREAKER.
MFR: Siemens
MFR #: QA115AFCN
UPC: 804766906657
Item #: 1128882
Available to Order
$113.42 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE PLUG-IN CIRCUIT BREAKER. 20A 1-POLE (10kA AT 120V) PERSONELPROTECTION GROUND-FAULT CLASS 5mA TYPE QPF2N BREAKER.
MFR: Siemens
MFR #: QF120AN
UPC: 804766906718
Item #: 1128891
Available to Order
$326.77 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE SENTRON MOLDED CASE CIRCUIT BREAKER WITH THERMAL - MAGNETICTRIP UNIT. STANDARD 40 DEG C BREAKER ED FRAME WITH STANDARD BREAKING CAPACITY. 30A 2-POLE (18KAIC AT 480V). NON-INTERCHANGEABLE TRIP UNIT. SPECIAL FEATURES LINE AND LOAD SIDE LUGS (LN1E100) WIRE RANGE 10 - 1/0AWG (CU/AL). DIMENSIONS (W x Hx D) IN 2.00 x 6.4 x 3.92.
MFR: Siemens
MFR #: ED42B030L
UPC: 783643314863
Item #: 618573
Available to Order
$1733.76 each
Availability
Location Available Qty
Siemens
Low Voltage Molded Case Circuit Breakers General Purpose MCCBs - Type BQ, 2-Pole, 120/240VAC are Circuit Protection Molded Case Circuit Breakers. 2-Pole Common-Trip circuit breaker type BQH. Rated 120/240V (020A) (AIR 22 kA). Special features Load side lugs are included.
MFR: Siemens
MFR #: BQ2B020H
UPC: 783643161580
Item #: 201045
Available to Order
$385.28 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE SENTRON MOLDED CASE CIRCUIT BREAKER WITH THERMAL - MAGNETICTRIP UNIT. STANDARD 40 DEG C BREAKER ED FRAME WITH STANDARD BREAKING CAPACITY. 15A 2-POLE (18KAIC AT 480V). NON-INTERCHANGEABLE TRIP UNIT. SPECIAL FEATURES LINE AND LOAD SIDE LUGS (SA1E025) WIRE RANGE 14 - 10AWG (CU) / 12 - 10AWG (AL). DIMENSIONS (W x H x D) IN 2.00 x 6.4 x 3.92.
MFR: Siemens
MFR #: ED42B015L
UPC: 783643083769
Item #: 116313
Available to Order
$1733.76 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.