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
Showing 673 - 699 of 699 Items
Filters Clear Filters
expand_less Brand (3)
+ Show 11 More
expand_less Ways to Shop
expand_less Circuit Breaker Type
expand_less Voltage Rating (AC)
expand_less Mounting
expand_less Number of Poles
expand_less Interrupt Rating
+ Show 1 More
expand_less Trip Type
  • Eaton Bussmann
  • Siemens
  • Telemecanique
Discontinued
BREAKER 15/20A 1P 120V 10K MH-T DUPLEX
Siemens
BREAKER 15/20A 1P 120V 10K MH-T DUPLEX
MFR: Siemens
MFR #: MP1520
UPC: 040892521993
Item #: 640963
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 110A 3-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 110A 3-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: QJ23B110
UPC: 783643201088
Item #: 762517
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
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 MP-T Application For Use In 125 AMP And 225 AMP Single Phase Output WMM, WML, WMT meter stacks Standard HACR Rated Voltage Rating 120/240 Amperage Rating 90 Interrupt Rating 10 Number Of Poles 2 Operating Temperature 40
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 MP-T Application For Use In 125 AMP And 225 AMP Single Phase Output WMM, WML, WMT meter stacks Standard HACR Rated Voltage Rating 120/240 Amperage Rating 90 Interrupt Rating 10 Number Of Poles 2 Operating Temperature 40
MFR: Siemens
MFR #: MP290
UPC: 040892280005
Item #: 44223
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 225A 2-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 225A 2-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: QJ22B225
UPC: 783643193758
Item #: 214697
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
BREAKER 15A 1P 120V 10K MP-GT GFCI 5MA
Siemens
BREAKER 15A 1P 120V 10K MP-GT GFCI 5MA
MFR: Siemens
MFR #: MP115GFP
UPC: 040892007428
Item #: 748823
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 175A 3-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 175A 3-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: QJ23B175
UPC: 783643193796
Item #: 151001
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Low Voltage Residential Circuit Breakers Main Breakers - Branch Main Breakers Non-reversible are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MD-T Voltage Rating 120/240 Amperage Rating 150 Interrupt Rating 10 Number Of Poles 2
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 MD-T Voltage Rating 120/240 Amperage Rating 150 Interrupt Rating 10 Number Of Poles 2
MFR: Siemens
MFR #: MPD2150
UPC: 040892006421
Item #: 183025
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
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 MP-T Application For Use In 125 AMP And 225 AMP Single Phase Output WMM, WML, WMT meter stacks Standard HACR Rated Voltage Rating 120/240 Amperage Rating 70 Interrupt Rating 10 Number Of Poles 2 Operating Temperature 40
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 MP-T Application For Use In 125 AMP And 225 AMP Single Phase Output WMM, WML, WMT meter stacks Standard HACR Rated Voltage Rating 120/240 Amperage Rating 70 Interrupt Rating 10 Number Of Poles 2 Operating Temperature 40
MFR: Siemens
MFR #: MP270
UPC: 040892279801
Item #: 93186
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
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 MP-T Application For Use In 125 AMP And 225 AMP Single Phase Output WMM, WML, WMT meter stacks Standard HACR Rated Voltage Rating 120/240 Amperage Rating 125 Interrupt Rating 10 Number Of Poles 2 Operating Temperature 40
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 MP-T Application For Use In 125 AMP And 225 AMP Single Phase Output WMM, WML, WMT meter stacks Standard HACR Rated Voltage Rating 120/240 Amperage Rating 125 Interrupt Rating 10 Number Of Poles 2 Operating Temperature 40
MFR: Siemens
MFR #: MP2125
UPC: 040892281194
Item #: 3686
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Motor Starter protector MSP, IEC, SIRIUS Component in Group Installation ManualCombination Starter Type E Self-protected Group Tap Conductor Protector Trip Class 20, 28 - 40 Amps Frame Size S2 Screw Terminals UL File E47705 in Vol. 7 (1) Sec. 7 (12)
Siemens
Motor Starter protector MSP, IEC, SIRIUS Component in Group Installation ManualCombination Starter Type E Self-protected Group Tap Conductor Protector Trip Class 20, 28 - 40 Amps Frame Size S2 Screw Terminals UL File E47705 in Vol. 7 (1) Sec. 7 (12)
MFR: Siemens
MFR #: 3RV1031-4FB10
UPC: 754554626574
Item #: 562722
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
LOW VOLTAGE SENTRON MOLDED CASE CIRCUIT BREAKER ACCESSORY. COPPER BODY LUG FOR 2/3-POLE 1200A - 2000A PD AND RD FRAME BREAKER. WIRE RANGE 300 - 600KCMIL (CU/AL) - 5 BARREL LUG. SUITABLE FOR LINE AND LOAD SIDES. SUITS VL PG FRAME WHEN USING MOUNTING BASE (MBPG1600 OR MBPG1601). SINGLE LUG.
Siemens
LOW VOLTAGE SENTRON MOLDED CASE CIRCUIT BREAKER ACCESSORY. COPPER BODY LUG FOR 2/3-POLE 1200A - 2000A PD AND RD FRAME BREAKER. WIRE RANGE 300 - 600KCMIL (CU/AL) - 5 BARREL LUG. SUITABLE FOR LINE AND LOAD SIDES. SUITS VL PG FRAME WHEN USING MOUNTING BASE (MBPG1600 OR MBPG1601). SINGLE LUG.
MFR: Siemens
MFR #: TC5R600
UPC: 783643244634
Item #: 448146
Available to Order
$1524.50 each
Availability
Location Available Qty
Discontinued
Low Voltage Molded Case Circuit Breakers Sentron Molded Case Circuit Breakers - MCCB Connection Accessories are Circuit Protection Molded Case Circuit Breakers. BREAKER QJ AL/CU LUGS 1W 300KCMIL
Siemens
Low Voltage Molded Case Circuit Breakers Sentron Molded Case Circuit Breakers - MCCB Connection Accessories are Circuit Protection Molded Case Circuit Breakers. BREAKER QJ AL/CU LUGS 1W 300KCMIL
MFR: Siemens
MFR #: TA1Q300
UPC: 783643122703
Item #: 46522
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 150A 2-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 150A 2-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: QJ22B150
UPC: 783643193727
Item #: 102121
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 125A 3-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 125A 3-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: QJ23B125
UPC: 783643193772
Item #: 146193
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Motor Starter protector MSP, IEC, SIRIUS Component in Group Installation ManualCombination Starter Starter with 3RV1928-1H adapter Type E Self-protected GroupTap Conductor Protector Trip Class 10, 5.5 - 8 Amps Frame Size S0 Screw Terminals UL File E47705 in Vol.7(1) Sec.9 (11)
Siemens
Motor Starter protector MSP, IEC, SIRIUS Component in Group Installation ManualCombination Starter Starter with 3RV1928-1H adapter Type E Self-protected GroupTap Conductor Protector Trip Class 10, 5.5 - 8 Amps Frame Size S0 Screw Terminals UL File E47705 in Vol.7(1) Sec.9 (11)
MFR: Siemens
MFR #: 3RV1021-1HA10
UPC: 754554409252
Item #: 172099
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Low Voltage Residential Circuit Breakers Main Breakers - Branch Main Breaker Reversible are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MD-T Voltage Rating 120/240 Amperage Rating 200 Interrupt Rating 22 Number Of Poles 2
Siemens
BREAKER 200A 2P 120/240V 10K MD-TR
MFR: Siemens
MFR #: MPD2200R
UPC: 040892006483
Item #: 21514
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 200A 3-POLE (22KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 200A 3-POLE (22KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: QJH23B200
UPC: 783643193901
Item #: 61406
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
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 MP-T Application For Use In 100 AMP, 3-Phase Output WML Meter Stacks Only Standard HACR Rated Voltage Rating 240 Amperage Rating 100 Interrupt Rating 10 Number Of Poles 3 Operating Temperature 40
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 MP-T Application For Use In 100 AMP, 3-Phase Output WML Meter Stacks Only Standard HACR Rated Voltage Rating 240 Amperage Rating 100 Interrupt Rating 10 Number Of Poles 3 Operating Temperature 40
MFR: Siemens
MFR #: MP3100
UPC: 040892237603
Item #: 371909
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Low Voltage Residential Circuit Breakers Miniature Circuit Breakers GFCI - Personnel Protect 1-pole plug-on 10k are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Replaced by US2 QF115A
Siemens
Low Voltage Residential Circuit Breakers Miniature Circuit Breakers GFCI - Personnel Protect 1-pole plug-on 10k are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Replaced by US2 QF115A
MFR: Siemens
MFR #: QF115
UPC: 783643148574
Item #: 47653
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Siemens
LOW VOLTAGE SENTRON MOLDED CASE CIRCUIT BREAKER WITH SOLID STATE SENSITRIP III ELECTRONIC TRIP UNIT. ASSEMBLED STANDARD 40 DEG C BREAKER LD FRAME WITH FUSELESS CURRENT LIMITING BREAKING CAPACITY. 500A 3-POLE (100KAIC AT 600V) (150KAIC AT 480V). NON-INTERCHANGEABLE LIG TRIP UNIT. SPECIAL FEATURES NO LUGS INSTALLED. DIMENSIONS (W x H x D) IN 7.50 x 17.9 x 4.00.
MFR: Siemens
MFR #: SCLD69500G
UPC: 783643217652
Item #: 356802
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
BREAKER 30A 1P 120V 10K MP-T
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 MP-T Standard HACR Rated Voltage Rating120 Amperage Rating 30 Interrupt Rating 10 Number Of Poles 1 Operating Temperature 40
MFR: Siemens
MFR #: MP130
UPC: 040892518917
Item #: 144757
Available to Order
$47.85 each
Availability
Location Available Qty
Discontinued
Motor Starter protector MSP, IEC, SIRIUS Component in Group Installation ManualCombination Starter with 3RT1946-4GA07 adapter Type E Self-protected Group Tap Conductor Protector Trip Class 20, 45 - 63 Amps Frame Size S3 Screw Terminals ULFile E47705 in Vol. 7(1) Sec. 8 (13)
Siemens
Motor Starter protector MSP, IEC, SIRIUS Component in Group Installation ManualCombination Starter with 3RT1946-4GA07 adapter Type E Self-protected Group Tap Conductor Protector Trip Class 20, 45 - 63 Amps Frame Size S3 Screw Terminals ULFile E47705 in Vol. 7(1) Sec. 8 (13)
MFR: Siemens
MFR #: 3RV1042-4JB10
UPC: 754554730479
Item #: 364363
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Low Voltage Residential Circuit Breakers Miniature Circuit Breakers GFCI - Personnel Protect 1-pole plug-on 10k are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. BREAKER 20A 1P 120V 10K QPF GFCI 5MAReplaced by QF120A
Siemens
Low Voltage Residential Circuit Breakers Miniature Circuit Breakers GFCI - Personnel Protect 1-pole plug-on 10k are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. BREAKER 20A 1P 120V 10K QPF GFCI 5MAReplaced by QF120A
MFR: Siemens
MFR #: QF120
UPC: 783643148581
Item #: 48352
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Motor Starter protector MSP, IEC, SIRIUS Component in Group Installation ManualCombination Starter Type E Self-protected Group Tap Conductor Protector Trip Class 10, 22 - 32 Amps Frame Size S2 Screw Terminals UL File E47705 in Vol. 7 (1) Sec. 7 (12)
Siemens
Motor Starter protector MSP, IEC, SIRIUS Component in Group Installation ManualCombination Starter Type E Self-protected Group Tap Conductor Protector Trip Class 10, 22 - 32 Amps Frame Size S2 Screw Terminals UL File E47705 in Vol. 7 (1) Sec. 7 (12)
MFR: Siemens
MFR #: 3RV1031-4EA10
UPC: 754554409351
Item #: 288123
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Low Voltage Residential Circuit Breakers Miniature Circuit Breakers GFCI - Personnel Protect 2-pole plug-on 10k are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. BREAKER 60A 2P 120/240V 10K QPF GFCI5MA
Siemens
Low Voltage Residential Circuit Breakers Miniature Circuit Breakers GFCI - Personnel Protect 2-pole plug-on 10k are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. BREAKER 60A 2P 120/240V 10K QPF GFCI5MA
MFR: Siemens
MFR #: QF260
UPC: 783643273771
Item #: 166459
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Low Voltage Residential Circuit Breakers Main Breakers - Branch Main Breakers Non-reversible are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MD-T Voltage Rating 120/240 Amperage Rating 175 Interrupt Rating 10 Number Of Poles 2
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 MD-T Voltage Rating 120/240 Amperage Rating 175 Interrupt Rating 10 Number Of Poles 2
MFR: Siemens
MFR #: MPD2175
UPC: 040892006414
Item #: 1188737
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Low Voltage Residential Circuit Breakers Main Breakers - Type QPP/MPP Breakers are Circuit Protection Load Center Mains, Feeders, and Miniature CircuitBreakers. Type MPP Voltage Rating 120/240 Amperage Rating 200 Interrupt Rating 10 Number Of Poles 4
Siemens
Low Voltage Residential Circuit Breakers Main Breakers - Type QPP/MPP Breakers are Circuit Protection Load Center Mains, Feeders, and Miniature CircuitBreakers. Type MPP Voltage Rating 120/240 Amperage Rating 200 Interrupt Rating 10 Number Of Poles 4
MFR: Siemens
MFR #: MPP2200
UPC: 040892528664
Item #: 1206633
Available to Order
Phone: 1-855-999-2372 Email Contact Us
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.