Our Most Popular Square D Miniature Circuit Breakers

Schneider Electric, also known as Square D, makes a line of popular miniature circuit breakers for use in low voltage electrical networks. Let’s discuss some background information on Square D and the company’s miniature circuit breakers, and introduce some of our most popular, best-selling products.

About Schneider Electric

Schneider Electric is a multinational conglomerate specializing in energy management and automation. Their products and services range from little switches to automatic operational systems. Their workforce of 170,000 employees serves customers in over 100 countries across the globe.

Schneider Electric began in 1902 in Detroit as the Detroit Fuse and Manufacturing Company. The company made a name for itself building enclosed fuses and fuse switches. By adding an enclosure system to the fuse, they could make Detroit auto plants a safer place for employees to work.

In 1917, Schneider Electric changed its name to Square D. The move was strategic as it capitalized on its well-known trademark logo, which was a capital letter D inside a square found on all their switches.

Miniature Circuit Breakers

Square D miniature circuit breakers are used in low voltage electrical networks. It is an electromagnetic device inside an enclosure in a molded insulating case. The breakers work through a time delay process, where they will only trip if an overload exists for long periods.

This delay means that miniature circuit breakers will not respond to sudden surges in the circuit, such as the extra current required to start a motor. They can function as local control switches, isolating switches or overload protection devices.

EDB24020 Molded Case Miniature Circuit Breaker

The EDB24020 is a miniature circuit breaker with a Square D branch type of EDB. It is a 2-pole circuit breaker with an amperage rating of 20A and voltage rating of 480V. The trip setting on the EDB24020 is from 270 to 875 amperes. It is a molded case thermal magnetic circuit breaker, meaning it is enclosed inside a case and consists of a bimetal strip and an electromagnetic used as its tripping mechanisms.

EDB34050 Molded Case Miniature Circuit Breaker

The miniature circuit breaker EDB34050 is a Square D branch type of EDB. It is a 3-pole circuit breaker with an amperage rating of 50A and voltage rating of 480V. The EDB34050 has a high trip setting, starting from 630 amperes to 1800 amperes. It is also a molded case thermal magnetic circuit breaker, meaning it is enclosed inside a case and consists of a bimetal strip and an electromagnetic as its tripping mechanisms.

EDB34125 Molded Case Miniature Circuit Breaker

The EDB34125 is a miniature circuit breaker with a Square D branch type of EDB. It is a 3-pole circuit breaker with an amperage rating of 125A and voltage rating of 480V. The EDB34125 has a high trip setting, starting from 1000 amperes to 2300 amperes. It is also a molded case thermal magnetic circuit breaker, meaning it is enclosed inside a case and consists of a bimetal strip and an electromagnetic as its tripping mechanisms.

HOMT1515230 Miniature Circuit Breaker

The HOMT1515230 is a miniature circuit breaker with a Square D branch type of HOMT. It is a tandem pole circuit breaker. It is a tandem pole circuit breaker, which means it has two connection points like a 2-pole breaker. But unlike a 2-pole breaker, it has two single-pole units to service two different circuits. The amperage rating is 1530A and voltage rating is 120/240V. It has one outside pole with an ampere rating of 15 A and two inside poles with ampere ratings of 30 A each.

HOMT2020220 Miniature Circuit Breaker

The HOMT2020220 miniature circuit breaker has a Square D branch type of HOMT. It is a tandem pole circuit breaker, which means it has two connection points like a 2-pole breaker. But unlike a 2-pole breaker, it has two single-pole units to service two different circuits. The amperage rating is 2020A and voltage rating is 120/240V. It has one outside pole and two inside poles both with an ampere rating of 20A.

QO110 Miniature Circuit Breaker

The QO110 is a miniature circuit breaker with a Square D branch type of QO. It is a single pole circuit breaker, with an amperage rating of only 10A and voltage rating of 120V. It is a thermal magnetic circuit breaker, meaning it consists of a bimetal strip and an electromagnetic as its tripping mechanisms.

Final Thoughts

Schneider Electric is an American company that produces Square D (trademark brand) circuit breakers. Low voltage electrical networks use this line of miniature circuit breakers. Some popular miniature circuit breakers include the branch types EDB, HOMT and QO110, which have proven to be durable and reliable.

Leave a Reply