The world's first circuit breaker was born in 1885, it is a combination of a knife start and an overcurrent release. In 1905, an air circuit breaker with a free trip device was born. Since 1930, with the advancement of science and technology, the discovery of the arc principle and the invention of various arc extinguishing devices have gradually formed the current institutions. In the late 1950s, due to the rise of electronic components, electronic trip units were produced. Today, molded case circuit breakers have the advent of intelligent circuit breakers due to the popularity of single-chip microcomputers.

Common low voltage circuit breakers and vacuum breaks:

The low-voltage circuit breaker is used for the function of switching on, off, controlling or protecting the circuit with AC voltage of 1200V and DC voltage of 1500V. Low-voltage circuit breaker is an important part of the electrical industry. It is a basic accessory in the machinery industry. In the power distribution system, the low-voltage switchgear is mainly composed of various low-voltage circuit breaker components. The function and performance of the low-voltage circuit breaker is low-voltage switch. Equipment plays a vital role. More than 80% of the electricity generated by power generation equipment is distributed through low-voltage circuit breakers. For every 10,000 kW of power generation equipment, about 20,000 pieces of various types of low-voltage circuit breakers are needed. In the industrial automation system, the circuit breaker energy storage motor also needs various control screens, consoles, controllers and other products composed of low voltage circuit breakers. Since 1949, China's low-voltage circuit breaker industry has gradually developed into an independent design and production industry on the basis of some repair and assembly of simple electrical equipment factories. By 1979, there were more than 600 production enterprises, after 1985-1986, 1990-1991. At the two peaks of development in 1995, there were about 1,500 production enterprises in the low-voltage circuit breaker industry in 1995.

Dongguan Xunwang Hardware Products Factory specializes in: metal stamping parts, computer heat sink processing, circuit breaker special motor, molded case circuit breaker, circuit breaker energy storage motor, circuit breaker motor, is a professional Dongguan motor production factory. Tel: 0769-86958478 Mr. Wang. Welcome all merchants to call to discuss cooperation!