Within ZN28A-12 series indoor high voltage vacuum circuit breaker (within ZN28-12 integrated indoor high voltage vacuum circuit breaker) ◆ use of environmental conditions Ambient temperature:. -10 ℃ ~ + 40 ℃ (allow storage at -30 ℃ when);. Relative humidity: daily average of not more than 95%; on average less than 90 percent; daily average saturated vapor pressure of not more than 2.2kPa; Altitude: not exceed 2000m (2500 plateau type); saturated vapor pressure of not more than the average monthly 1.8kPa; Earthquake intensity: not more than 8 degrees; no fire, explosion, serious contamination, chemical corrosion and severe vibration. Welcome to inquire! 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 Xi'an breaker manufacturers 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, low-voltage circuit breaker function and Performance of Low-voltage switchgear 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 Xi'an breaker buy find Which? Various control screens also need constituted by a low voltage circuit breaker, consoles, controllers and other products. Chinese low-voltage circuit breaker breaker industry since 1949 Xi'an Which is better in the afternoon, on the basis of 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, after 1985 ~ 1986, 1990 ~ 1991 two Development Summit, in 1995 the industry has low voltage circuit breaker manufacturers about 1500. Where to buy Xi'an breaker | Huayi Electric Power (certified) | Xian Xian Huayi breaker provided by the power plant. Xian Huayi power plant (www.xahy.com) is a leader in Xi'an, high voltage circuit breakers, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Huayi power in leadership with the staff warmly welcome all inquiries negotiations to create electricity Huayi a better future.