Top Circuit Breaker Brands

Figure 1: Allen-Bradley molded case circuit breakers.

Circuit breaker are switching appliances that provide circuit overload and short-circuit protection. There are many popular brands of circuit breakers such as Allen-Bradley, Fuji, Eaton Moeller, Schneider and Siemens, which will be introduced as follows.

Allen-Bradley

Allen-Bradley (AB) is the brand-name of a line of factory automation equipment, today owned by Rockwell Automation. The company, with revenues of approximately US $6.4 billion in 2013, manufactures programmable logic controllers (PLC), sensor, circuit breaker, safety components and systems, contactors, motor control centers, and systems of such products.

Figure 2: Allen-Bradley 140M motor circuit protectors.

As for circuit and load protection product, AB features industrial DIN Rail circuit breakers, high density miniature circuit breakers, motor circuit protectors, residual current devices, miniature circuit breakers, and supplementary protection devices.

Fuji

Fuji Electric Co., Ltd., established in 2008, is a Japanese electrical equipment company. Its main business fields are control equipment and power distribution equipment, including molded-case circuit breaker (MCCB), earth-leakage circuit breaker (ELCB), vacuum circuit breaker, etc.

Figure 3: Fuji General-purpose molded case circuit breaker.

Fuji’s general-purpose molded case circuit breakers, designed with compact and high performance are developed to meet with international standards for global markets.

Eaton Moeller

Eaton Corporation is a multinational power management company with 2020 sales of $17.86 billion, founded in the United States with global headquarters in Dublin, Ireland, and a secondary administrative center in Beachwood, Ohio.
Eaton acquires the Moeller Group in 2008, a leading manufacturer of components for residential building applications, circuit protection and industrial controls for machinery applications in Europe.

Figure 4: Eaton Moeller motor-protective circuit-breaker.

Eaton Moeller’s circuit protection devices and components include circuit breakers, fuse resources, fuses and fuse holders, surge protection and etc. Its power defense molded case circuit breaker has communicating electronic trip units and the ability to generate the data to help to optimize the facilities' performance, and to help keep employees, customers and end-users safe by reducing the risk of electric arc events.

Schneider

Schneider Electric Co., Ltd. is a global leader in energy efficiency management, founded in 1836 by the Schneider brothers. The main businesses include power, industrial automation, infrastructure, energy conservation, energy, building automation and security electronics, data centers and smart living spaces, etc.

Figure 5: Schneider IEC miniature circuit breaker.

Schneider mainly offers miniature circuit breakers, like its Square D™ Homeline™, Square D™ QO™ and QOB miniature circuit breakers, which are characterized by market-leading circuit protection, first-to market innovation, multiple applications, space saving, etc.

Siemens

Siemens AG is a German multinational conglomerate corporation and the largest industrial manufacturing company in Europe headquartered in Munich with branch offices abroad. Its SIRIUS control products such as circuit breakers, 3RA6 compact starters, load feeders, reversing contactor assemblies, overload relays, etc. provide reliable protection for machine and plants.

Figure 6: Siemens SIRIUS circuit breaker.

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