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  1. Home
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  3. Electrical Supplies
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  5. Circuit Protection
  6. /
  7. Circuit Breakers

Circuit Breakers by SQUARE D (38 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 including SQUARE D
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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 including SQUARE D
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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
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 including SQUARE D
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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 including SQUARE D
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Square D Miniature Circuit Breaker, QO Series, 30A, 2 Pole, 120/240V AC, 10kA at 120/240V AC QOB230
SQUARE D QO Standard Bolt On Miniature Circuit Breaker
126 results including SQUARE D
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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 including SQUARE D
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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 including SQUARE D
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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 including SQUARE D
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Square D Circuit Breaker, QO Series, 20A, 1 Pole, 120/240V AC, 10kA at 120/240V AC 1311620
SQUARE D QO Standard Plug In Circuit Breaker
18 results including SQUARE D
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Square D Miniature Circuit Breaker, HOMELINE Series, 20A, 1 Pole, 120V AC, 10kA at 120V AC, A Curve HOM120GFI
SQUARE D HOMELINE Ground Fault Protecting Class A 6 mA Plug In Miniature Circuit Breaker
12 results including SQUARE D
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Square D Miniature Circuit Breaker, QO Series, 20A, 3 Pole, 208/120V AC, 10kA at 208/120V AC, A Curve QOB320GFI
SQUARE D QO Ground Fault Protecting Class A 6 mA Bolt On Miniature Circuit Breaker
18 results including SQUARE D
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Square D Combination Circuit Breaker, HOM Series, 20A, 1 Pole, 120V AC, 10kA HOM120PDFC
SQUARE D HOMELINE Ground Fault Circuit Interrupter Plug In Combination Circuit Breaker
4 results including SQUARE D
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Square D Miniature Circuit Breaker, HOMELINE Series, 20A, 2 Pole, 120/240V AC, 10kA at 120/240V AC HOMT2020220
SQUARE D HOMELINE Quad Tandem Plug In Miniature Circuit Breaker
10 results including SQUARE D
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Square D Circuit Breaker, HOM Series, 60A, 2 Pole, 120/240V AC, 10kA HOM260CP
SQUARE D HOMELINE Standard Plug In Circuit Breaker
45 results including SQUARE D
table view View Items
Square D Miniature Circuit Breaker, QO Series, 20A, 1 Pole, 120V AC, 10kA at 120V AC, A Curve QO120GFICP
SQUARE D QO Ground Fault Circuit Interrupter Plug In Miniature Circuit Breaker
13 results including SQUARE D
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Square D Miniature Circuit Breaker, HOMELINE Series, 20A, 1 Pole, 120V AC, 10kA at 120/240V AC QO120CAFI
SQUARE D HOMELINE Combination ARC Fault Plug In Miniature Circuit Breaker
7 results including SQUARE D
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Square D Combination Circuit Breaker, HOM Series, 25A, 2 Pole, 120/240V AC, 10kA SQ569536
Square D

Combination Circuit Breaker, HOM Series, 25A, 2 Pole, 120/240V AC, 10kA

Zoro # G410770231
Mfr # SQ569536
product price:  $55.59
/ea
Square D Miniature Circuit Breaker, HOMELINE Series, 20A, 1 Pole, 120V AC, 10kA at 120V AC, B Curve HOM120EPD
SQUARE D HOMELINE Ground Fault Protecting Class B 30 mA Plug In Miniature Circuit Breaker
3 results including SQUARE D
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Square D Circuit Breaker, Homeline Series, 20A, 2 Pole, 240V AC 34031
Square D

Circuit Breaker, Homeline Series, 20A, 2 Pole, 240V AC

Zoro # G703896372
Mfr # 34031
product price:  $65.25
/ea
Square D Miniature Circuit Breaker, E FRAME Series, 20A, 3 Pole, 277/480V AC, 25kA at 120V AC EDB34020SA
SQUARE D E FRAME Shunt Trip Bolt On Miniature Circuit Breaker
22 results including SQUARE D
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Square D Combination Circuit Breaker, QO Series, 20A, 1 Pole, 120/240V AC, 10kA at 120/240V AC 6473250
Square D

Combination Circuit Breaker, QO Series, 20A, 1 Pole, 120/240V AC, 10kA at 120/240V AC

Zoro # G203921000
Mfr # 6473250
product price:  $43.89
/ea
Square D Miniature Circuit Breaker, HOMT Series, 20A, 1 Pole, 120/240V AC, 10kA HOMT2020CP
SQUARE D HOMT Tandem Plug In Miniature Circuit Breaker
5 results including SQUARE D
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Square D Miniature Circuit Breaker, HOM Series, 20A, 1 Pole, 120V AC, 10kA, A Curve HOM120GFICP
SQUARE D HOMELINE Ground Fault Circuit Interrupter Plug In Miniature Circuit Breaker
5 results including SQUARE D
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Square D Circuit Breaker, QO Series, 20A, 2x1 Pole, 120/240V AC, 10kA at 120/240V AC 5841564
Square D

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

Zoro # G004021428
Mfr # 5841564
product price:  $142.99
/ea
Square D Circuit Breaker, HOM Series, 50A, 2 Pole, 120/240V AC, 10kA SQ386553
SQUARE D HOMELINE Ground Fault Circuit Interrupter Plug In Circuit Breaker
5 results including SQUARE D
table view View Items
Square D Miniature Circuit Breaker, HOMELINE Series, 20A, 1 Pole, 120V AC, 10kA at 120V AC QOB120CAFI
SQUARE D HOMELINE Combination ARC Fault Bolt On Miniature Circuit Breaker
3 results including SQUARE D
table view View Items
Square D Miniature Circuit Breaker, QO Series, 30A, 1 Pole, 120/240V AC, 10kA at 120/240V AC QOB130HID
SQUARE D QO High Intensity Discharge Bolt On Miniature Circuit Breaker
8 results including SQUARE D
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Square D Miniature Circuit Breaker, QO Series, 20A, 3 Pole, 240V AC, 10kA at 240V AC QO320HID
SQUARE D QO High Intensity Discharge Plug In Miniature Circuit Breaker
6 results including SQUARE D
table view View Items
Square D Miniature Circuit Breaker, QO Series, 30A, 2 Pole, 120/240V AC, 10kA at 120/240V AC, B Curve QO230EPD
SQUARE D QO Ground Fault Protecting Class B 30 mA Plug In Miniature Circuit Breaker
11 results including SQUARE D
table view View Items
Square D Combination Circuit Breaker, QO Series, 15A, 1 Pole, 120V AC, 10kA at 120V AC 6995039
SQUARE D QO Ground Fault Circuit Interrupter Plug In Combination Circuit Breaker
3 results including SQUARE D
table view View Items
Square D Circuit Breaker, HOMT Series, 20A, 1 Pole, 120/240V AC, 10kA HOMT2020CP
SQUARE D HOMT Tandem Plug In Circuit Breaker
5 results including SQUARE D
table view View Items
Square D Miniature Circuit Breaker, E FRAME Series, 30A, 1 Pole, 277V AC, 25kA at 120V AC EDB14030EPD
SQUARE D E FRAME Ground Fault Circuit Interrupter Bolt On Miniature Circuit Breaker
8 results including SQUARE D
table view View Items
Square D Circuit Breaker, QO Series, 20A, 1 Pole, 120V AC, 10kA at 120V AC 6562839
SQUARE D QO Ground Fault Circuit Interrupter Plug In Circuit Breaker
3 results including SQUARE D
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Square D Molded Case Circuit Breaker, LA Series, 150 A, 3 Pole, 600V AC, 42kA at 120/240V AC LA36150
Square D

Molded Case Circuit Breaker, LA Series, 150 A, 3 Pole, 600V AC, 42kA at 120/240V AC

Zoro # G2618655
Mfr # LA36150
product price:  $4,450.99
/ea
Square D Miniature Circuit Breaker, QO Series, 20A, 1 Pole, 120V AC, 10kA at 120V AC, B Curve QOB120EPD
SQUARE D QO Ground Fault Protecting Class B 30 mA Bolt On Miniature Circuit Breaker
15 results including SQUARE D
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Circuit Breakers by SQUARE D (38 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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eaton 100 amp breakerc series circuit breaker4 pole circuit breakercircuit breaker thqleaton miniature circuit breaker
circuit breakers 2 polesquare d 40 ampcircuit breaker 200 ampcircuit breaker br seriesge 125 amp breaker

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