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 BREAKER WITH THERMAL - MAGNETIC TRIP. QR FRAME STANDARD 40C BREAKER. 225A 3-POLE (65KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: HQR23B225
UPC: 804766136955
Item #: 1182325
Available to Order
$4728.00 each
Availability
Location Available Qty
Siemens
Low Voltage Molded Case Circuit Breakers General Purpose MCCBs, TM - are Circuit Protection Molded Case Circuit Breakers. 3-Pole circuit breaker Type QRH2 HACR rated. Rated 240V (200A). AIR (25 kA). Special features UL listed for reverse feed applications, (AL) load side lugs installed.
MFR: Siemens
MFR #: QRH23B200
UPC: 804766136801
Item #: 711399
Available to Order
$3726.66 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP. QR FRAME STANDARD 40C BREAKER. 200A 3-POLE (10KA AT 240V). SPECIAL FEATURES LINE/LOAD SIDE LUGS (TA1QR300) WIRE RANGE 6AWS - 1/0 AWS (AL/CU).
MFR: Siemens
MFR #: QR23B200L
UPC: 804766136733
Item #: 983588
Available to Order
$2675.45 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP. QR FRAME STANDARD 40C BREAKER. 225A 3-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: QR23B225
UPC: 804766136672
Item #: 1022302
Available to Order
$2663.72 each
Availability
Location Available Qty
Siemens
BREAKER 3VA Shunt trip flexible STF BLACK 208 TO 277 V AC 50/60 HZ
MFR: Siemens
MFR #: 3VA9978-0BA23
UPC: 804766323560
Item #: 1200723
Available to Order
$493.22 each
Availability
Location Available Qty
Siemens
circular conduc. terminal TA2.4 2 x 2/0 600 kcmil for 2 cables 3 units accessory for 3VA53/54 3VA63/64
MFR: Siemens
MFR #: 3VA9473-0JJ23
UPC: 804766325847
Item #: 1293899
Available to Order
$494.08 each
Availability
Location Available Qty
Siemens
OEZ-LK1496-ST250
MFR: Siemens
MFR #: 3VA5212-5ED31-0AA0
UPC: 804766308581
Item #: 1274134
Available to Order
$2015.78 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE BREAKER MOUNTING KIT FOR REVISED P1 PANELBOARDS. 240V 3-PHASE KIT WITH STRAP AND A 3-POLE 10KAIC CIRCUIT BREAKER (QR23B225).
MFR: Siemens
MFR #: MBKQR3225A
UPC: 804766155772
Item #: 755579
Available to Order
$5257.03 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE BREAKER MOUNTING KIT FOR REVISED P1 PANELBOARDS. 240V 3-PHASE KIT WITH STRAP AND A 3-POLE 10KAIC CIRCUIT BREAKER (QR23B200).
MFR: Siemens
MFR #: MBKQR3200A
UPC: 804766155765
Item #: 614181
Available to Order
$5257.03 each
Availability
Location Available Qty
Siemens
Low Voltage Molded Case Circuit Breakers Panelboard Mounting 240V GFCI Circuit Breakers - 2-Pole, GFCI - BLHF, 22KAIC, 120/240VAC are Circuit Protection Molded Case Circuit Breakers. BRKR 20A 2P 120/240V 22K BLHFB GFCI5MA
MFR: Siemens
MFR #: BF220AH
UPC: 887621215408
Item #: 1169708
Available to Order
$1530.37 each
Availability
Location Available Qty
Siemens
Low Voltage Molded Case Circuit Breakers Panelboard Mounting 240V GFCI Circuit Breakers - 2-Pole, GFCI - BLHF, 22KAIC, 120/240VAC are Circuit Protection Molded Case Circuit Breakers. BRKR 40A 2P 120/240V 22K BLHFB GFCI5MA
MFR: Siemens
MFR #: BF240AH
UPC: 887621215446
Item #: 1065286
Available to Order
$1530.37 each
Availability
Location Available Qty
Siemens
Low Voltage Molded Case Circuit Breakers Panelboard Mounting 240V GFCI Circuit Breakers - 2-Pole, GFCI - BLHF, 22KAIC, 120/240VAC are Circuit Protection Molded Case Circuit Breakers. BRKR 50A 2P 120/240V 22K BLHFB GFCI5MA
MFR: Siemens
MFR #: BF250AH
UPC: 887621215460
Item #: 1065287
Available to Order
$1530.37 each
Availability
Location Available Qty
Siemens
Low Voltage Molded Case Circuit Breakers Panelboard Mounting 240V GFCI Circuit Breakers - 1-Pole, GFCI - BLHF, 22KAIC, 120VAC are Circuit Protection Molded Case Circuit Breakers. BREAKER 20A 1P 120V 22K BLHF2 GFCI 5MA
MFR: Siemens
MFR #: BF120AH
UPC: 887621215286
Item #: 649379
Available to Order
$1402.26 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. 70A 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 #: LGB3B070B
UPC: 887621220303
Item #: 394462
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 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 #: LGB3B030B
UPC: 887621220242
Item #: 394452
Available to Order
$3065.62 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 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 #: LGB1B020B
UPC: 887621219925
Item #: 394442
Available to Order
$1127.48 each
Availability
Location Available Qty
Siemens
Switch_MOTOR 3RV2021-1HA10-3RV2021-1HA10_5.5...8A_8A_460V
MFR: Siemens
MFR #: 3RV20211HA10
UPC: 040892942248
Item #: 818007
Available to Order
$373.23 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)20A 2P/(1)50A 2P 10K QT
MFR: Siemens
MFR #: Q22050CT2
UPC: 887621024383
Item #: 368512
Available to Order
$274.29 each
Availability
Location Available Qty
Siemens
BREAKER 20A 1P 120V 22K BAF2H COMB AFCI
MFR: Siemens
MFR #: BA120AFCH
UPC: 887621215019
Item #: 437228
Available to Order
$390.61 each
Availability
Location Available Qty
Siemens
CIRCUIT BREAKER 10KA, 1POLE, D, 3A ACC. TO UL 489 - 277V
MFR: Siemens
MFR #: 5SJ4103-8HG42
UPC: 754554959375
Item #: 1273478
Available to Order
$129.53 each
Availability
Location Available Qty
Siemens
CIRCUIT BREAKER 10KA, 2POLE, C, 15A ACC. TO UL 489 - 480Y/277V
MFR: Siemens
MFR #: 5SJ4218-7HG42
UPC: 754554959900
Item #: 1273489
Available to Order
$259.07 each
Availability
Location Available Qty
Siemens
CIRCUIT BREAKER 10KA, 1POLE, D, 6A ACC. TO UL 489 - 277V
MFR: Siemens
MFR #: 5SJ4106-8HG42
UPC: 754554959580
Item #: 1273483
Available to Order
$129.53 each
Availability
Location Available Qty
Siemens
CIRCUIT BREAKER 10KA, 1POLE, C, 15A ACC. TO UL 489 - 277V
MFR: Siemens
MFR #: 5SJ4118-7HG42
UPC: 754554959528
Item #: 1273470
Available to Order
$129.53 each
Availability
Location Available Qty
Siemens
CIRCUIT BREAKER 10KA, 1POLE, C, 10A ACC. TO UL 489 - 277V
MFR: Siemens
MFR #: 5SJ4110-7HG42
UPC: 754554959498
Item #: 949112
Available to Order
$129.53 each
Availability
Location Available Qty
Siemens
FUSE_DEVICE 5SJ4102-5SJ4102_2,0A_480V
MFR: Siemens
MFR #: 5SJ4102-7HG42
UPC: 754554959467
Item #: 1024736
Available to Order
$129.53 each
Availability
Location Available Qty
Siemens
CIRCUIT BREAKER 10KA, 1POLE, D, 5A ACC. TO UL 489 - 277V
MFR: Siemens
MFR #: 5SJ4111-8HG42
UPC: 754554959405
Item #: 1273481
Available to Order
$129.53 each
Availability
Location Available Qty
Siemens
Switch_OVERCURRENT 5SJ4206-8HG42-5SJ4206-8HG42_6A_6A_240V
MFR: Siemens
MFR #: 5SJ4206-8HG42
UPC: 754554959962
Item #: 1273492
Available to Order
$279.25 each
Availability
Location Available Qty
Siemens
CIRCUIT BREAKER 10KA, 1POLE, C, 8A ACC. TO UL 489 - 277V
MFR: Siemens
MFR #: 5SJ4108-7HG42
UPC: 754554959290
Item #: 1024738
Available to Order
$129.53 each
Availability
Location Available Qty
Siemens
CIRCUIT BREAKER 10KA, 1POLE, C, 1A ACC. TO UL 489 - 277V
MFR: Siemens
MFR #: 5SJ4101-7HG42
UPC: 754554959269
Item #: 1273473
Available to Order
$129.53 each
Availability
Location Available Qty
Siemens
FUSE_DEVICE 5SJ4216-16,0A_480V
MFR: Siemens
MFR #: 5SJ4216-7HG42
UPC: 754554959702
Item #: 1273491
Available to Order
$259.07 each
Availability
Location Available Qty
Siemens
WL Trip Unit ETU776 ETU 776 L(S)(I) WITH GRAPHIC LCD
MFR: Siemens
MFR #: WLETU776
UPC: 783643467255
Item #: 523792
Available to Order
$11646.95 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 Special Features Non-Automatic Switch 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 #: Q2125S
UPC: 783643974753
Item #: 921379
Available to Order
$773.30 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE SENTRON MOLDED CASE CIRCUIT BREAKER WITH THERMAL - MAGNETICTRIP UNIT. UN-ASSEMBLED STANDARD 40 DEG C BREAKER FD FRAME WITH STANDARD BREAKING CAPACITY. 125A 3-POLE (22KAIC AT 600V) (35KAIC AT 480V). INTERCHANGEABLE TRIPUNIT. SPECIAL FEATURES LINE AND LOAD SIDE LUGS (TA1FD350A) WIRE RANGE 6AWG - 350KCMIL (CU) / 4AWG - 350KCMIL (AL). DIMENSIONS (W x H x D) IN 4.50 x 9.5 x 4.00.
MFR: Siemens
MFR #: FD63B125
UPC: 783643211469
Item #: 54982
Available to Order
$8272.77 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE SENTRON MOLDED CASE CIRCUIT BREAKER WITH THERMAL - MAGNETICTRIP UNIT. ASSEMBLED STANDARD 40 DEG C BREAKER JD FRAME WITH STANDARD BREAKING CAPACITY. 350A 3-POLE (65KAIC AT 240V). NON-INTERCHANGEABLE TRIP UNIT. SPECIAL FEATURES LINE AND LOAD SIDE LUGS (TA2J6500) WIRE RANGE 3/0AWG - 500KCMIL (CU) / 4/0AWG - 500KCMIL (AL). DIMENSIONS (W x H x D) IN 7.50 x 11.0 x 4.00.
MFR: Siemens
MFR #: JXD23B350L
UPC: 783643009387
Item #: 1203509
Available to Order
$10310.65 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE SENTRON MOLDED CASE CIRCUIT BREAKER WITH THERMAL - MAGNETICTRIP UNIT. ASSEMBLED STANDARD 40 DEG C BREAKER FD FRAME WITH HIGH BREAKING CAPACITY. 200A 2-POLE (25KAIC AT 600V) (65KAIC AT 480V). NON-INTERCHANGEABLE TRIP UNIT. SPECIAL FEATURES NO LUGS INSTALLED. DIMENSIONS (W x H x D) IN 4.50 x 9.5 x 4.00.
MFR: Siemens
MFR #: HFXD62B200
UPC: 783643434417
Item #: 1143046
Available to Order
$13921.92 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 Amperage Rating 100A Trip Range Thermal Magnetic Interrupt Rating 22 AIC
MFR: Siemens
MFR #: EQ9675
UPC: 783643255388
Item #: 32515
Available to Order
$302.71 each
Availability
Location Available Qty
Siemens
MCB UL489 1-P 1A C-TRIP SAME PHASE ONLY MINIATURE CIRCUIT-BREAKER 240 V 15 KA, 1-POLE, C, 1 A, D=70 MM TO UL 489, SAME POLARITY
MFR: Siemens
MFR #: 5SJ4101-7HG40
UPC: 754554932200
Item #: 723405
Available to Order
$99.53 each
Availability
Location Available Qty
Siemens
MCB UL489 1-P 16A B-TRIP SAME PHASE ONLY MINIATURE CIRCUIT-BREAKER 240 V 15 KA,1-POLE, B, 16 A, D=70 MM TO UL 489, SAME POLARITY
MFR: Siemens
MFR #: 5SJ4116-6HG40
UPC: 754554932583
Item #: 1087446
Available to Order
$99.53 each
Availability
Location Available Qty
Siemens
CIRCUIT BREAKER 240V 14KA, 1-POLE, C, 6A, D=70MM ACC. TO UL 489, SAME POLARITY
MFR: Siemens
MFR #: 5SJ4106-7HG40
UPC: 754554932248
Item #: 723499
Available to Order
$99.53 each
Availability
Location Available Qty
Siemens
MCB UL489 1-P 2A C-TRIP SAME PHASE ONLY MINIATURE CIRCUIT-BREAKER 240 V 15 KA, 1-POLE, C, 2 A, D=70 MM TO UL 489, SAME POLARITY
MFR: Siemens
MFR #: 5SJ4102-7HG40
UPC: 754554932217
Item #: 723406
Available to Order
$99.53 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. 40A 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 H x D) IN 3 x 5.4 x 2.8.
MFR: Siemens
MFR #: NGB3B040B
UPC: 783643414303
Item #: 206915
Available to Order
$2077.97 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. 125A 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 #: NGB3B125B
UPC: 783643414396
Item #: 193391
Available to Order
$5318.63 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. 125A 3-POLE (14KAIC AT 600Y/347V) (25KAIC AT 480Y/277V). SPECIAL FEATURES MOUNTS ON PANELBOARD,NO LUGS. DIMENSIONS (W x H x D) IN 3 x 5.4 x 2.8.
MFR: Siemens
MFR #: NGB3B125
UPC: 783643553538
Item #: 175476
Available to Order
$5318.63 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. 70A 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 H x D) IN 3 x 5.4 x 2.8.
MFR: Siemens
MFR #: NGB3B070B
UPC: 783643414341
Item #: 394535
Available to Order
$2438.81 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. 60A 3-POLE (14KAIC AT 600Y/347V) (25KAIC AT 480Y/277V). SPECIAL FEATURES MOUNTS ON PANELBOARD, NO LUGS. DIMENSIONS (W x H x D) IN 3 x 5.4 x 2.8.
MFR: Siemens
MFR #: NGB3B060
UPC: 783643553477
Item #: 279088
Available to Order
$2077.97 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. 60A 2-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 H x D) IN 2 x 5.4 x 2.8.
MFR: Siemens
MFR #: NGB2B060B
UPC: 783643414181
Item #: 394529
Available to Order
$1587.08 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. 25A 3-POLE (14KAIC AT 600Y/347V) (25KAIC AT 480Y/277V). SPECIAL FEATURES MOUNTS ON PANELBOARD, NO LUGS. DIMENSIONS (W x H x D) IN 3 x 5.4 x 2.8.
MFR: Siemens
MFR #: NGB3B025
UPC: 783643553415
Item #: 203911
Available to Order
$2077.97 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 3-POLE (14KAIC AT 600Y/347V) (25KAIC AT 480Y/277V). SPECIAL FEATURES MOUNTS ON PANELBOARD, NO LUGS. DIMENSIONS (W x H x D) IN 3 x 5.4 x 2.8.
MFR: Siemens
MFR #: NGB3B020
UPC: 783643553408
Item #: 279047
Available to Order
$2077.97 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.