Common are low-voltage circuit breakers and vacuum off: low-voltage circuit breakers for AC voltage 1200V, 1500V DC voltage circuits from the off, control or protection such as the role of electrical appliances. Low-voltage circuit breaker is an important part of the electrical industry, in the machinery industry is the basis for matching pieces, in the distribution system voltage switchgear mainly consists of a variety of low-voltage circuit breaker components, functions and performance of low-voltage circuit breakers for low-voltage switchgear equipment plays a vital role. Power generation equipment issued more than 80% of electrical energy through the use of low-voltage circuit breakers distribution. Each additional 10,000 kW of power generation equipment, various types of low voltage circuit breakers about 20,000 or so a complete set. In industrial automation systems, but also requires a variety of control panels, consoles, controllers and other products formed by the low voltage circuit breakers. Chinese low-voltage circuit breaker industry since 1949 in the afternoon Wuhan vacuum circuit breaker is based on some repairs, simple electrical assembly plant on gradually developed into independent design and production industry, to 1979 a total of more than 600 manufacturing enterprises, through 1985 to 1986 1990 to 1991 Development Summit Yichang two vacuum circuit breakers, low-voltage circuit breaker industry in 1995 has about 1500 producers. Common electrical and mechanical aspects of the breaker failure were: electrical faults aspects: protection malfunction or improper setting value, or current, voltage transformer circuit failure; poor insulation secondary circuit, the DC system grounding occurred two vacuum circuit Hebi device, the DC positive and negative power on the vacuum breaker, which is equivalent to relay action, a signal caused by tripping. Mechanical faults: tripping tripping mechanism untenable; positioning screw to adjust properly, so crank arm three high; trailers spring deformation, lack of elasticity; wheel damage; trailers slope, errors or wheel to drag the shelves contact little face. Tyan vacuum circuit breaker | Vacuum breaker | Huayi electricity provided by the Xi'an Huayi power plant. Xian Huayi power plant (www.xahy.com) strong, credible, in Xi'an high-voltage circuit breakers and other industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Huayi power and you hand into the brilliant, for a better future!