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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  • Greenlee
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  • Siemens
Siemens
BREAKER 25A 2P 120/240V 65K HBL 65 KAIC
MFR: Siemens
MFR #: B225HH
UPC: 783643082809
Item #: 394349
Available to Order
$1403.33 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Main Breakers - Branch Main Breaker Reversible are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type QNRH 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 #: QN2150RH
UPC: 783643204256
Item #: 54628
Available to Order
$763.38 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 Special Features Shunt Trip 120V Application Electrical Distribution Standard UL 489 Voltage Rating 120/240V Amperage Rating 100A Trip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles 3P
MFR: Siemens
MFR #: B310000S01
UPC: 783643268623
Item #: 115643
Available to Order
$2585.35 each
Availability
Location Available Qty
Siemens
LOW VOLTAGE 3VA UL MOLDED CASE CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP UNIT. 3VA41 FRAME WITH STANDARD (CLASS S) BREAKING CAPACITY. 30A 3-POLE (14KAIC AT 600Y/347) (25KAIC AT 480V). TM210 TRIP UNIT WITH FIXED Ir FIXED Ii. SPECIAL FEATURES LUGS INSTALLED IN LOAD SIDE ONLY. DIMENSIONS (W x H x D) IN 3 x 5.5x 3.7.
MFR: Siemens
MFR #: 3VA4130-4ED34-0AA0
UPC: 804766943683
Item #: 1206703
Available to Order
$1554.30 each
Availability
Location Available Qty
Siemens
BREAKER BQD 2P 100A 480VAC 14KA 10 KAIC
MFR: Siemens
MFR #: BQD2100
UPC: 783643277335
Item #: 48819
Available to Order
$2822.10 each
Availability
Location Available Qty
Siemens
RP1 150A 35kA @ 480V Main Breaker kit. Includes Strap kit MBKVA5262B and Main Breaker ready to install.
MFR: Siemens
MFR #: MBKVAM3150A
UPC: 195125075160
Item #: 1276283
Available to Order
$10276.21 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. 50A 3-POLE (18KAIC AT 600V) (25KAIC AT 480V). NON-INTERCHANGEABLE TRIP UNIT. SPECIAL FEATURES LOAD LUGS ONLY (LN1E100) WIRE RANGE 10 - 1/0AWG (CU/AL). DIMENSIONS (W x H x D) IN 3.00 x 6.4 x 3.92.
MFR: Siemens
MFR #: ED63B050
UPC: 783643209732
Item #: 318985
Available to Order
$5724.82 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. 30A 3-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 3 x 5.4 x 2.8.
MFR: Siemens
MFR #: NGB3B030B
UPC: 783643414280
Item #: 6201
Available to Order
$4213.42 each
Availability
Location Available Qty
Siemens
BREAKER 40A 1P 120V 10K QP 10 KAIC
MFR: Siemens
MFR #: Q140
UPC: 783643148222
Item #: 215890
Available to Order
$24.79 each
Availability
Location Available Qty
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Type QP/MP 1-pole 10k are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type QP/MP Application Electrical Distribution Standard UL 489 Voltage Rating 120V Amperage Rating 30A Trip Range Thermal Magnetic Interrupt Rating 22 AIC Number Of Poles 1P
MFR: Siemens
MFR #: Q130H
UPC: 783643156333
Item #: 230135
Available to Order
$93.36 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 (020A) (AIR 10 kA). Special features Load side lugs are included.
MFR: Siemens
MFR #: BQ2B020
UPC: 783643102415
Item #: 181394
Available to Order
$396.29 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 (040A) (AIR 10 kA). Special features Load side lugs are included.
MFR: Siemens
MFR #: BQ2B040
UPC: 783643102439
Item #: 182645
Available to Order
$396.29 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 HBL Application Electrical Distribution Standard UL 489 Voltage Rating 240V Amperage Rating 30A Trip Range Thermal Magnetic Interrupt Rating 65 AIC Number Of Poles 3P
MFR: Siemens
MFR #: B330HH
UPC: 783643264229
Item #: 161090
Available to Order
$2424.09 each
Availability
Location Available Qty
Siemens
BREAKER BQD 2P 30A 480VAC 14KA 10 KAIC
MFR: Siemens
MFR #: BQD230
UPC: 783643277243
Item #: 20066
Available to Order
$1405.04 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
$740.19 each
Availability
Location Available Qty
Siemens
BRKR 20A 2P 120/240V 10K BLFB GFCI 5MA
MFR: Siemens
MFR #: BF220A
UPC: 887621215392
Item #: 784462
Available to Order
$844.88 each
Availability
Location Available Qty
Siemens
BREAKER 20A 2P 120/240V 22K QPH 22 KAIC
MFR: Siemens
MFR #: Q220H
UPC: 783643148758
Item #: 62508
Available to Order
$187.54 each
Availability
Location Available Qty
Siemens
BREAKER 30A 2P 120/240V 22K QPH 22 KAIC
MFR: Siemens
MFR #: Q230H
UPC: 783643148765
Item #: 101236
Available to Order
$187.54 each
Availability
Location Available Qty
Siemens
Low Voltage Circuit Breakers Miniature Thermal Mag Circuit Breakers - Duplex Miniature Circuit Breakers. (2) 20A 1 120V 10kAIC BL
MFR: Siemens
MFR #: B2020
UPC: 804766997709
Item #: 1319662
Available to Order
$392.86 each
Availability
Location Available Qty
Siemens
Low Voltage Molded Case Circuit Breakers Panelboard Mounting 240V Circuit Breakers - Type BL, 2-Pole, 120/240VAC are Circuit Protection Molded Case Circuit Breakers. Type HBL Application Electrical Distribution Standard UL 489 Voltage Rating 120/240V A mperage Rating 40A Trip Range Thermal Magnetic Interrupt Rating 65 AIC Number Of Poles 2P
MFR: Siemens
MFR #: B240HH
UPC: 783643264168
Item #: 394351
Available to Order
$1720.71 each
Availability
Location Available Qty
Siemens
BREAKER BQD 3P 40A 480VAC 14KA 10 KAIC
MFR: Siemens
MFR #: BQD340
UPC: 783643277397
Item #: 21316
Available to Order
$2482.42 each
Availability
Location Available Qty
Siemens
Low Voltage Molded Case Circuit Breakers Panelboard Mounting 240V GFCI Circuit Breakers - 2-Pole, GFCI - BLE, 10KAIC, 120/240VAC are Circuit ProtectionMolded Case Circuit Breakers. Sub Brand N/A Type BL Special Features N/A Application Electrical Distribution Standard UL 489 Voltage Rating 120/240V Amperage Rating 20A Load Rating N/A Frequency Rating N/A Phase N/A Frame N/A Trip Type N/ATrip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles 2P
MFR: Siemens
MFR #: BE220
UPC: 783643274112
Item #: 88304
Available to Order
$2104.99 each
Availability
Location Available Qty
Siemens
Low Voltage Molded Case Circuit Breakers Panelboard Mounting 240V Circuit Breakers - Type BL, 2-Pole, 120/240VAC are Circuit Protection Molded Case Circuit Breakers. Type HBL Application Electrical Distribution Standard UL 489 Voltage Rating 120/240V A mperage Rating 20A Trip Range Thermal Magnetic Interrupt Rating 65 AIC Number Of Poles 2P
MFR: Siemens
MFR #: B220HH
UPC: 783643264144
Item #: 91218
Available to Order
$1403.33 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
$6217.19 each
Availability
Location Available Qty
Siemens
RP1 200A 35kA @ 480V Main Breaker kit. Includes Strap kit MBKVA5262B and Main Breaker ready to install.
MFR: Siemens
MFR #: MBKVAM3200A
UPC: 195125075177
Item #: 1311799
Available to Order
$10276.21 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 10A Trip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles 2P
MFR: Siemens
MFR #: Q210
UPC: 783643449046
Item #: 204322
Available to Order
$50.89 each
Availability
Location Available Qty
Siemens
Low Voltage Molded Case Circuit Breakers Panelboard Mounting 240V Circuit Breakers - Type BL, 1-Pole, 120VAC are Circuit Protection Molded Case CircuitBreakers. Type BLH Application Electrical Distribution Standard UL 489 Voltage Rating 120V Amperage Rating 15A Trip Range Thermal Magnetic Interrupt Rating 22 AIC Number Of Poles 1P
MFR: Siemens
MFR #: B115H
UPC: 783643263819
Item #: 73295
Available to Order
$337.97 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
$265.42 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 90A Trip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles 3P
MFR: Siemens
MFR #: Q390
UPC: 783643148468
Item #: 67259
Available to Order
$480.83 each
Availability
Location Available Qty
Siemens
BREAKER 20A 1P 120V 10K QP 120V SHUNT 10 KAIC, W/120V S.T. FACTORY INSTALLED
MFR: Siemens
MFR #: Q12000S01
UPC: 783643237957
Item #: 169271
Available to Order
$306.51 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 150A Trip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles 2P
MFR: Siemens
MFR #: QS2150
UPC: 783087935242
Item #: 224861
Available to Order
$585.00 each
Availability
Location Available Qty
Siemens
Low Voltage Molded Case Circuit Breakers General Purpose MCCBs are Circuit Protection Molded Case Circuit Breakers. 3-Pole Common-Trip circuit breaker type BQ. Rated 240V (050A) (AIR 10 kA). Special features Load side lugs are included.
MFR: Siemens
MFR #: BQ3B050
UPC: 783643102620
Item #: 189683
Available to Order
$1279.81 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 BLH Application Electrical Distribution Standard UL 489 Voltage Rating 240V Amperage Rating 50A Trip Range Thermal Magnetic Interrupt Rating 22 AIC Number Of Poles 3P
MFR: Siemens
MFR #: B350H
UPC: 783643264021
Item #: 102006
Available to Order
$1924.86 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
$7322.01 each
Availability
Location Available Qty
Siemens
Low Voltage Molded Case Circuit Breakers Panelboard Mounting 480V Circuit Breakers - 3-pole, TM - BQD, 14KAIC, 480/277VAC are Circuit Protection MoldedCase Circuit Breakers. Type BQD Features PANELBOARD MOUNT Application CONSTRUCTION Std UL 489 CSA-C22.2 V. Rating 480/277V A. Rating 70A F. Rating 50/60HZ Frame 100A Trip Type THERMAL MAGNETIC TRIP UNIT Interrupt Rating 14KA No. Of Poles 3P Connection LOW TAB Material MOLDED CASE CIRCUIT BREAKER L 5 W 3
MFR: Siemens
MFR #: BQD370
UPC: 783643277434
Item #: 38160
Available to Order
$3350.49 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
$414.95 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
$1162.50 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 20-20A Trip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles Two single poles and one double pole
MFR: Siemens
MFR #: Q22020CT
UPC: 783643194991
Item #: 68109
Available to Order
$136.32 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. BREAKER 60A 3P 240V 22K BLH
MFR: Siemens
MFR #: B360H
UPC: 783643264038
Item #: 188784
Available to Order
$1924.86 each
Availability
Location Available Qty
Siemens
Low Voltage Molded Case Circuit Breakers Panelboard Mounting 240V Circuit Breakers - Type BL, 1-Pole, 120VAC are Circuit Protection Molded Case CircuitBreakers. Type HBL Application Electrical Distribution Standard UL 489 Voltage Rating 120V Amperage Rating 20A Trip Range Thermal Magnetic Interrupt Rating 65 AIC Number Of Poles 1P
MFR: Siemens
MFR #: B120HH
UPC: 783643264090
Item #: 118430
Available to Order
$583.29 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 BLH Application Electrical Distribution Standard UL 489 Voltage Rating 240V Amperage Rating 25A Trip Range Thermal Magnetic Interrupt Rating 22 AIC Number Of Poles 3P
MFR: Siemens
MFR #: B325H
UPC: 783643306318
Item #: 18661
Available to Order
$1924.86 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 BLH Application Electrical Distribution Standard UL 489 Voltage Rating 240V Amperage Rating 35A Trip Range Thermal Magnetic Interrupt Rating 22 AIC Number Of Poles 3P
MFR: Siemens
MFR #: B335H
UPC: 783643306332
Item #: 114566
Available to Order
$1924.86 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 BLH Application Electrical Distribution Standard UL 489 Voltage Rating 240V Amperage Rating 40A Trip Range Thermal Magnetic Interrupt Rating 22 AIC Number Of Poles 3P
MFR: Siemens
MFR #: B340H
UPC: 783643264014
Item #: 172907
Available to Order
$1924.86 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 20A Trip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles 3P
MFR: Siemens
MFR #: Q320
UPC: 783643148406
Item #: 67153
Available to Order
$321.38 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 40-30A Trip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles 2P
MFR: Siemens
MFR #: Q24030CT2
UPC: 783643083967
Item #: 159869
Available to Order
$155.32 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 BLH Application Electrical Distribution Standard UL 489 Voltage Rating 240V Amperage Rating 45A Trip Range Thermal Magnetic Interrupt Rating 22 AIC Number Of Poles 3P
MFR: Siemens
MFR #: B345H
UPC: 783643306356
Item #: 221899
Available to Order
$1924.86 each
Availability
Location Available Qty
Siemens
BREAKER 20A 1P 120V 22K QPH 22 KAIC,
MFR: Siemens
MFR #: Q120H
UPC: 783643156326
Item #: 180603
Available to Order
$93.36 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 20-30A Trip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles Two single poles and one double pole
MFR: Siemens
MFR #: Q22030CT
UPC: 783643195004
Item #: 113287
Available to Order
$136.32 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.