Circuit breakers detect overcurrent and short circuit conditions and shut off electrical flow to prevent damage to electrical circuits. Schneider Electric manufactures several types of Square D circuit breakers for use in homes and commercial and industrial facilities.
Square D miniature circuit breakers are typically used in residential and light commercial installations. They are physically small, are installed in fuse boxes or cabinets, and protect low amperages from 10 to 150A.
UL 1077 Supplementary Protectors
These small protectors are used for overcurrent protection of sensitive circuits in appliances or other electrical equipment where circuit overcurrent protection is already provided or is not required.
Molded case circuit breakers are available to protect amperages from 15 to 6,000A, and are commonly used in commercial and industrial buildings. Features include push-to-trip for easy checking of functions, permanent trip and easily identifiable trip indication.
These are medium- to large-sized circuit breakers used in switchboard applications in large industrial and commercial facilities, protecting amperages from 200 to 6,000A.
Low-voltage power circuit breakers are commonly used in switchgear in data processing commercial facilities and large industrial settings.
Arc Flash Protection
Arc flashes can occur when electrical equipment is being serviced or inspected, and can damage equipment, disrupt operations and cause minor to severe worker injuries and death. Square Ds arc flash protection interrupts large fault currents, limiting arc flash energy to protect workers and equipment.
- Photo Credit Image by Flickr.com, courtesy of Alexandre VIALLE
Square D Breaker Identification
A number of counterfeit breakers have shown up in American homes sporting the trusted Square D logo. Knowing how to distinguish the...
What Is a Type D Circuit Breaker?
Circuit breakers are divided into types based on their instantaneous tripping current. This is the minimum current at which the circuit breaker...
How to Install a Square D Tandem Breaker
What happens when you need to add a circuit to your home, but there are no available spare breakers in your Square...
How to Install a Square D Single Pole Ground Fault Breaker
Installing Square D single pole ground fault circuit breakers is a common upgrade made to Square D breaker panels. Ground fault breakers...
How to Replace a Square D Circuit Breaker
A Square D breaker may occasionally fail and refuse to switch back into the "On" position. If the switch will not reset...
What Types of Breakers Are Interchangeable With Type QP?
Electrical panels are manufactured by a variety of companies, each with a particular design of panels and circuit breakers. Because each company...
Challenger Type A Circuit Breaker Alternatives
Challenger Type A circuit breakers are reputable brand named equipment. The Challenger company made single pole 110V, and double pole 220V circuit...
Square D Homeline Breaker Specifications
Square D’s Homeline series of residential-use circuit breakers consists of main, branch, ground fault circuit interrupt (GFCI) and arc fault circuit interrupt...
Different Types of Circuit Breakers
The most common type of household circuit breaker that people will see is the single pole breaker, which is a single switch....