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
LOW VOLTAGE 3VA UL MOLDED CASE CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP UNIT. 3VA51 FRAME WITH STANDARD (CLASS S) BREAKING CAPACITY. 70A 3-POLE (14KAIC AT 600Y/347) (25KAIC AT 480V). TM210 TRIP UNIT WITH FIXED Ir FIXED Ii. SPECIAL FEATURES CONNECTION WITH ALUMINUM LUG. DIMENSIONS (W x H x D) IN 3 x 5.5 x 3.7.
MFR: Siemens
MFR #: 3VA5170-4ED36-0AA0
UPC: 804766832109
Item #: 1497286
Available to Order
$2038.09 each
Availability
Location Available Qty
Siemens
RP1 250A 65kA @ 480V Main Breaker kit. Includes Strap kit MBKVA5262B and Main Breaker ready to install.
MFR: Siemens
MFR #: MBKVAM3250A
UPC: 195125075191
Item #: 1365303
Available to Order
$12722.59 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE 3VA CIRCUIT BREAKER ACCESSORY. 2 INCH HANDLE TIE AND PADLOCK DEVICE FOR (125A 3VA4) FRAME UL CIRCUIT BREAKERS.
MFR: Siemens
MFR #: 3VA9032-0LB20
UPC: 804766951800
Item #: 1304642
Available to Order
$277.57 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE 3VA CIRCUIT BREAKER ENCLOSURE NEUTRAL KIT 100%. SUITABLE FOR (400-600A 3VA5) / (400-600A 3VA6) FRAME UL CIRCUIT BREAKER ENCLOSURES.
MFR: Siemens
MFR #: HN656ACB
UPC: 804766827839
Item #: 1389932
Available to Order
$680.37 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE TWIN (TANDEM) PLUG-IN CIRCUIT BREAKER. 20/20A (10kA 120V) COMBINATION TYPE ARC-FAULT TYPE QTA BREAKER.
MFR: Siemens
MFR #: Q2020AFC
UPC: 804766906541
Item #: 1237127
Available to Order
$295.33 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE TWIN (TANDEM) PLUG-IN CIRCUIT BREAKER. 15/15A (10kA 120V) COMBINATION TYPE ARC-FAULT TYPE QTA BREAKER.
MFR: Siemens
MFR #: Q1515AFC
UPC: 804766906534
Item #: 1237128
Available to Order
$295.33 each
Availability
Location Available Qty
Siemens
OEZ-LK1496-ST250
MFR: Siemens
MFR #: 3VA5212-5ED36-0AA0
UPC: 804766716461
Item #: 1453506
Available to Order
$5098.64 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE TWIN (TANDEM) PLUG-IN CIRCUIT BREAKER. 15/15A (10kA 120V) COMBINATION TYPE ARC-FAULT TYPE QTAN BREAKER.
MFR: Siemens
MFR #: Q1515AFCN
UPC: 804766905292
Item #: 1237126
Available to Order
$295.33 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE TWIN (TANDEM) PLUG-IN CIRCUIT BREAKER. 20/20A (10kA 120V) COMBINATION TYPE ARC-FAULT TYPE QTAN BREAKER.
MFR: Siemens
MFR #: Q2020AFCN
UPC: 804766906503
Item #: 1237129
Available to Order
$295.33 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE 3VA CIRCUIT BREAKER ACCESSORY. DOOR MOUNTED ROTARY OPERATOR. GRAY HANDLE NEMA TYPE 1. SUITABLE FOR (800A 3VA5) / (800-1000A 3VA6) FRAME UL CIRCUIT BREAKERS
MFR: Siemens
MFR #: 3VA9677-0FK21
UPC: 195125030589
Item #: 1457019
Available to Order
$2186.92 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP. QR FRAME STANDARD 40C BREAKER. 100A 3-POLE (65KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: HQR23B100
UPC: 804766136900
Item #: 870200
Available to Order
$9378.97 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE SENTRON MOLDED CASE CIRCUIT BREAKER WITH THERMAL - MAGNETICTRIP UNIT. ASSEMBLED 100 PERCENT RATED STANDARD 40 DEG C BREAKER MD FRAME WITH STANDARD BREAKING CAPACITY. 800A 3-POLE (25KAIC AT 600V) (50KAIC AT 480V). NON-INTERCHANGEABLE TRIP UNIT. SPECIAL FEATURES NO LUGS INSTALLED. DIMENSIONS (W x H x D) IN 9.00 x 16.0 x 6.00.
MFR: Siemens
MFR #: MXD63B800H
UPC: 783643320239
Item #: 1368264
Available to Order
$50461.49 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP. QR FRAME STANDARD 40C BREAKER. 175A 3-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: QR23B175
UPC: 804766136658
Item #: 1115555
Available to Order
$5700.93 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP. QR FRAME STANDARD 40C BREAKER. 150A 3-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: QR23B150
UPC: 804766136641
Item #: 772226
Available to Order
$5232.46 each
Availability
Location Available Qty
Siemens
Low Voltage Molded Case Circuit Breakers General Purpose MCCBs, TM - are Circuit Protection Molded Case Circuit Breakers. 2-Pole circuit breaker Type QRH2 HACR rated. Rated 240V (150A). AIR (25 kA). Special features UL listed for reverse feed applications, (AL) load side lugs installed.
MFR: Siemens
MFR #: QRH22B150
UPC: 804766136221
Item #: 1143045
Available to Order
$4796.71 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 (125A). AIR (25 kA). Special features UL listed for reverse feed applications, (AL) load side lugs installed.
MFR: Siemens
MFR #: QRH23B125
UPC: 804766136771
Item #: 673665
Available to Order
$7322.01 each
Availability
Location Available Qty
Siemens
Low Voltage Molded Case Circuit Breakers Accessories. Enclosure for QR circuit breaker type NEMA1 flush mount.
MFR: Siemens
MFR #: QR2N1F
UPC: 804766137556
Item #: 1227037
Available to Order
$1533.71 each
Availability
Location Available Qty
Siemens
Low Voltage Molded Case Circuit Breakers Accessories. Enclosure for QR circuit breaker type NEMA1 surface mount.
MFR: Siemens
MFR #: QR2N1S
UPC: 804766137549
Item #: 967008
Available to Order
$1533.71 each
Availability
Location Available Qty
Siemens
Low Voltage Molded Case Circuit Breakers Panelboard Mounting 240V GFCI Circuit Breakers - 2-Pole, GFCI - BLF, 10KAIC, 120/240VAC are Circuit ProtectionMolded Case Circuit Breakers. BRKR 30A 2P 120/240V 10K BLFB GFCI 5MA
MFR: Siemens
MFR #: BF230A
UPC: 887621215415
Item #: 617623
Available to Order
$844.88 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP. QR FRAME STANDARD 40C BREAKER. 225A 2-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: QR22B225
UPC: 804766136115
Item #: 1241684
Available to Order
$2012.35 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP. QR FRAME STANDARD 40C BREAKER. 200A 2-POLE (10KA AT 240V). SPECIAL FEATURES BULK PACK, NO LUGS INSTALLED.
MFR: Siemens
MFR #: QR22B200W
UPC: 804766136610
Item #: 1060314
Available to Order
$1996.91 each
Availability
Location Available Qty
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
$9288.04 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP. QR FRAME STANDARD 40C BREAKER. 200A 3-POLE (65KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: HQR23B200
UPC: 804766136948
Item #: 656076
Available to Order
$9288.04 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
$5256.48 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
$5232.46 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 NO LUGS INSTALLED.
MFR: Siemens
MFR #: QR23B200
UPC: 804766136665
Item #: 855280
Available to Order
$5232.46 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
$1140.85 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
$1322.70 each
Availability
Location Available Qty
Siemens
OEZ-LK1496-ST250
MFR: Siemens
MFR #: 3VA5212-5ED31-0AA0
UPC: 804766308581
Item #: 1274134
Available to Order
$4659.46 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
$9975.98 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
$1638.91 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
$2962.77 each
Availability
Location Available Qty
Siemens
BRKR 60A 2P 120/240V 10K QPFB GFCI 5MA
MFR: Siemens
MFR #: QF260A
UPC: 887621216788
Item #: 725784
Available to Order
$751.82 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
$2962.77 each
Availability
Location Available Qty
Siemens
BRKR 15A 2P 120/240V 10K QPFB GFCI 5MA
MFR: Siemens
MFR #: QF215A
UPC: 887621216634
Item #: 831296
Available to Order
$699.54 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
$2714.02 each
Availability
Location Available Qty
Appleton
GFI COVER ASSEMBLY
MFR: Appleton Electric
MFR #: GFS1
UPC: 781381822251
Item #: 793684
Available to Order
$1720.91 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
$6522.56 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
$2288.56 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
$663.55 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. 125A 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 #: LGB3B125B
UPC: 887621220358
Item #: 394461
Available to Order
$12166.75 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 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 #: LGB3B020B
UPC: 887621220228
Item #: 328651
Available to Order
$6217.19 each
Availability
Location Available Qty
Greenlee
SWITCH, CIRCUIT BREAKER
MFR: Greenlee
MFR #: 86388
UPC: 783310863885
Item #: 249742
Available to Order
$128.21 each
Availability
Location Available Qty
Greenlee
BREAKER,CIRCUIT (POTTER BROMFIELD)
MFR: Greenlee
MFR #: 86785
UPC: 783310867852
Item #: 721824
Available to Order
$256.10 each
Availability
Location Available Qty
O-Z/Gedney
NON-FUSED DISC. SWITCH 30A
MFR: O-Z/Gedney
MFR #: NEAB3036DS
UPC: 783126978537
Item #: 3182
Available to Order
$8618.10 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
$1077.33 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Miniature Circuit Breakers AFCI - Combo AFCI 2-pole plug-on 10k and 22k are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type Combination Type AFCI StandardUL Listed Voltage Rating 120/240 Amperage Rating 15 Number Of Poles 2 OperatingTemperature 40
MFR: Siemens
MFR #: Q215AFC
UPC: 040892148886
Item #: 239413
Available to Order
$261.07 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Miniature Circuit Breakers AFCI - Combo AFCI 2-pole plug-on 10k and 22k are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type Combination Type AFCI StandardUL Listed Voltage Rating 120/240 Amperage Rating 20 Number Of Poles 2 OperatingTemperature 40
MFR: Siemens
MFR #: Q220AFC
UPC: 040892148893
Item #: 11678
Available to Order
$261.07 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.