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  1. Home
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  5. Circuit Protection
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  7. Circuit Breakers
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Circuit Breakers (248 items)

Square D Miniature Circuit Breaker, QO Series, 20A, 1 Pole, 120/240V AC, 10kA at 120/240V AC QO120
SQUARE D QO Standard Plug In Miniature Circuit Breaker
176 results
table view View Items
Square D Miniature Circuit Breaker, QO Series, 60A, 2 Pole, 120/240V AC, 10kA at 120/240V AC QOU260
SQUARE D QO Standard Unit Mount Miniature Circuit Breaker
121 results
table view View Items
Pushmatic Miniature Circuit Breaker, UBIP Series, 40A, 2 Pole, 120/240V AC, 10kA at 120/240V AC UBIP240
PUSHMATIC UBIP Standard Bolt On Miniature Circuit Breaker
8 results
table view View Items
Carling Technologies Circuit Breaker, A Series, 20A, 1 Pole, 250/277V AC, 2kA at 120V AC, C Curve AA1-B0-34-620 -5D1-C
CARLING TECHNOLOGIES A Magnetic Bolt On Circuit Breaker
10 results
table view View Items
Carling Technologies Circuit Breaker, CLB Series, 20A, 1 Pole, 125/250V AC, Not Rated, C Curve CLB-203-27E3N-W-A/20
CARLING TECHNOLOGIES CLB Thermal Plug In Circuit Breaker
6 results
table view View Items
Siemens Miniature Circuit Breaker, BL Series, 20A, 1 Pole, 120/240V AC, 10kA at 120/240V AC B120
SIEMENS BL Standard Bolt On Miniature Circuit Breaker
107 results
table view View Items
Square D Miniature Circuit Breaker, HOMELINE Series, 20A, 1 Pole, 120V AC, 10kA at 120V AC HOMT2020
SQUARE D HOMELINE Tandem Plug In Miniature Circuit Breaker
7 results
table view View Items
Siemens Miniature Circuit Breaker, Q Series, 30A, 3 Pole, 240V AC, 10kA at 120V AC Q330
SIEMENS Q Standard Plug In Miniature Circuit Breaker
21 results
table view View Items
Eaton Circuit Breaker, BR Series, 20A, 1 Pole, 120/240V AC, 10kA BR120
EATON BR Standard Plug In Circuit Breaker
12 results
table view View Items
Square D Miniature Circuit Breaker, HOMELINE Series, 100A, 2 Pole, 240V AC, 10kA at 240V AC HOM2100
SQUARE D HOMELINE Standard Plug In Miniature Circuit Breaker
53 results
table view View Items
Square D Miniature Circuit Breaker, QO Series, 20/30A, 2x1, 2x1 Pole, 120/240V AC, 10kA at 120/240V AC QO20303020
CAD Files Available
Square D

Miniature Circuit Breaker, QO Series, 20/30A, 2x1, 2x1 Pole, 120/240V AC, 10kA at 120/240V AC

Zoro # G0668202
Mfr # QO20303020
product price:  $141.99
/ea
Zinsco Miniature Circuit Breaker, UBITBFP Series, 200A, 2 Pole, 120/240V AC, 10kA at 120/240V AC UBITBFP2002
ZINSCO UBITBFP Standard Plug In Miniature Circuit Breaker
2 results
table view View Items
Siemens Miniature Circuit Breaker, QF Series, 60A, 2 Pole, 120/240V AC, 10kA at 120/240V AC QF260A
SIEMENS QF Ground Fault Circuit Interrupter Plug In Miniature Circuit Breaker
7 results
table view View Items
Square D Miniature Circuit Breaker, QO Series, 20A, 1 Pole, 120/240V AC, 10kA at 120/240V AC QOB120
SQUARE D QO Standard Bolt On Miniature Circuit Breaker
126 results
table view View Items
Siemens Miniature Circuit Breaker, QP Series, 60A, 3 Pole, 240V AC, 10kA at 120V AC Q360
SIEMENS QP Standard Plug In Miniature Circuit Breaker
3 results
table view View Items
Square D Miniature Circuit Breaker, QO Series, 20/20A, 2x1 Pole, 120/240V AC, 10kA at 120/240V AC QO2020
SQUARE D QO Tandem Plug In Miniature Circuit Breaker
19 results
table view View Items
Ge Molded Case Circuit Breaker, THQL Series, 20A, 1 Pole, 120/240V AC, 10kA at 120/240V AC THQL1120
GE THQL Standard Plug In Molded Case Circuit Breaker
36 results
table view View Items
Square D Miniature Circuit Breaker, QO Series, 20A, 1 Pole, 120V AC, 10kA at 120/240V AC, A Curve QO120GFI
SQUARE D QO Ground Fault Protecting Class A 6 mA Plug In Miniature Circuit Breaker
19 results
table view View Items
Federal Pacific Miniature Circuit Breaker, UBIF Series, 20A, 1 Pole, 120/240V AC, 10kA at 120V AC UBIF020N
FEDERAL PACIFIC UBIF Standard Plug In Miniature Circuit Breaker
21 results
table view View Items
Pushmatic Miniature Circuit Breaker, UBIP Series, 20/20A, 1 Pole, 120/240V AC, 10kA at 120V AC UBIP2020
PUSHMATIC UBIP Tandem Bolt On Miniature Circuit Breaker
2 results
table view View Items
Challenger Miniature Circuit Breaker, UBITBA Series, 20A, 2 Pole, 120/240V AC, 10kA at 120/240V AC UBITBA220
CHALLENGER UBITBA Standard Plug In Miniature Circuit Breaker
11 results
table view View Items
Zinsco Miniature Circuit Breaker, UBIZ Series, 50A, 2 Pole, 120/240V AC, 10kA at 120/240V AC UBIZ0250
ZINSCO UBIZ Standard Plug In Miniature Circuit Breaker
13 results
table view View Items
Square D Miniature Circuit Breaker, E FRAME Series, 30A, 3 Pole, 277/480V AC, 25kA at 120V AC EDB34030
SQUARE D E FRAME Standard Bolt On Miniature Circuit Breaker
106 results
table view View Items
Siemens Miniature Circuit Breaker, BQ Series, 20A, 1 Pole, 120V AC, 10kA at 120V AC BQ1B020
SIEMENS BQ Standard Bolt On Miniature Circuit Breaker
39 results
table view View Items
Siemens Miniature Circuit Breaker, BF Series, 20A, 1 Pole, 120V AC, 10kA at 120V AC BF120A
SIEMENS BF Ground Fault Circuit Interrupter Bolt On Miniature Circuit Breaker
6 results
table view View Items
Eaton Circuit Breaker, CH Series, 20A, 1 Pole, 120/240V AC, 10kA CHF120
EATON CH Standard Plug In Circuit Breaker
7 results
table view View Items
Siemens Miniature Circuit Breaker, Q Series, 20/20A, 1 Pole, 120/240V AC, 10kA at 120V AC Q2020
SIEMENS Q Duplex Plug In Miniature Circuit Breaker
3 results
table view View Items
Pushmatic Miniature Circuit Breaker, UBIP Series, 100A, 2 Pole, 120/240V AC, 10kA at 120/240V AC UBIP2100
CAD Files Available
Pushmatic

Miniature Circuit Breaker, UBIP Series, 100A, 2 Pole, 120/240V AC, 10kA at 120/240V AC

Zoro # G3500165
Mfr # UBIP2100
product price:  $178.99
/ea
Eaton Cutler-Hammer Circuit Breaker, BD Series, 15A, 1 Pole, 120V AC, 10kA BD1515
EATON CUTLER-HAMMER BD Tandem Plug In Circuit Breaker
3 results
table view View Items
Eaton Miniature Circuit Breaker, GHB Series, 20A, 2 Pole, 277/480V AC, 14kA at 277/480V AC GHB2020
EATON GHB Standard Bolt On Miniature Circuit Breaker
31 results
table view View Items
Asi Circuit Breaker, NDB1L-32C Series, 6A, 2 Pole, 120V AC, 4.5kA, C Curve NDB1L-32C-6-120V
ASI NDB1L-32C Ground Fault Circuit Interrupter Surface Mount/DIN Rail Circuit Breaker
11 results
table view View Items
Carling Technologies Circuit Breaker, C Series, 100A, 1 Pole, 250V AC, 1.5kA at 120/240V AC, C Curve CA1-B0-34-810-321-R
CARLING TECHNOLOGIES C Magnetic Bolt On Circuit Breaker
11 results
table view View Items
Square D Miniature Circuit Breaker, HOM Series, 50A, 2 Pole, 120/240V AC, 10kA, A Curve HOM250GFICP
SQUARE D HOMELINE Ground Fault Circuit Interrupter Plug In Miniature Circuit Breaker
5 results
table view View Items
Ge Circuit Breaker, THQL Series, 100A, 2 Pole, 120/240V AC, 10kA at 120/240V AC THQL21100PA
CAD Files Available
Ge

Circuit Breaker, THQL Series, 100A, 2 Pole, 120/240V AC, 10kA at 120/240V AC

Zoro # G8639098
Mfr # THQL21100PA
product price:  $74.95
/ea
Carling Technologies Circuit Breaker, CMB Series, 5A, 1 Pole, 125/250V AC, Not Rated, C Curve CMB-053-11C3N-W-A/05
CARLING TECHNOLOGIES CMB Thermal Plug In Circuit Breaker
8 results
table view View Items
Eaton Molded Case Circuit Breaker, EHD Series, 100A, 3 Pole, 480V AC, 18kA at 240V AC EHD3100
EATON EHD Standard Free Standing Molded Case Circuit Breaker
28 results
table view View Items
Circuit Breakers (248 items)
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About Circuit Breakers

As an integral safety feature in any electrical setup, Circuit Breakers are meticulously designed to guard wiring systems, appliances, and other electrical components against potential damage caused by electricity overloads or short circuits. These indispensable devices can be deployed across a wide range of settings - from homes and businesses to industrial plants, ensuring the safe distribution of electricity wherever it's required.

Types of Circuit Breakers

Circuit breakers, also known as breaker breakers or electrical circuit breakers, come in an array of forms and dimensions tailored for specific tasks. For instance, 1-pole circuit breakers are commonly utilized for lighter loads such as lighting circuits. On the other hand, 5 amp breaker square D types are typically employed for handling heavier loads like air conditioners. AC breakers offer enhanced protection against power surges compared to standard electric circuit breakers.

The Making of Circuit Breakers

The fabrication process of a circuit breaker involves the use of various materials including copper wire and conductive metals that form the internal components tasked with detecting an overload or short circuit situation. A spring-loaded switch is subsequently linked to these contacts enabling it to trip when the current surpasses its designated limit.

Fuses and Circuit Breaker Integration

A key tip when using your circuit breaker is understanding how fuses integrate into this system. Fuses act as sacrificial lambs that blow out when there's a surge in power protecting your overall electrical setup from damage.

Circuit Breaker Applications Across Industries

Circuit Breaker applications span across a variety of industries such as manufacturing plants, power plants, oil refineries, aerospace facilities, automotive shops, and more. Professionals working with these high-powered machines heavily rely on circuit breakers to safeguard their equipment from potential damage caused by electrical surges or short circuits.

Find the Circuit Breaker You Need at Zoro

Looking for a specific item? Use our robust search tool to find it by name or keyword, or use our handy filters to narrow down our full assortment. You can also check out our whole selection of electrical supplies, along with other tools or equipment to ensure you have all you need to tackle the job, especially if you're taking on a DIY project for the first time. Plus, when you shop at Zoro, you'll always enjoy competitive prices on tons of great brands you know and trust. We make the shopping experience as fast and seamless as possible with free shipping on orders over $50 for registered users, Net 30 payment terms for qualifying customers, and an unparalleled customer service experience.

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