Now every major type vacuum circuit breaker manufacturers have their own models, and giving it the same name as just a code to take it. ZN beginning of the model is the naming rule breaker national standard, and now no one uses generally are made in accordance with their own product-specific. Z represents a vacuum, N represents Gansu indoor outdoor high voltage circuit breakers, other numbers and characters no specific meaning. ZN is the beginning of a vacuum ... indoor high voltage circuit breakers, vacuum is beginning ZW outdoor ..... V is generally English Vacuum acronym other characters generally have no special significance. -12 Shows such models rated at 12kV. Product performance and product model has little to Xinjiang high voltage circuit breakers, mainly to see the manufacturer's technical water products. Breaker "rejecting" "rejecting" a big threat to the safe operation of the circuit breaker failure, equipment failure when Ningxia outdoor high voltage circuit breakers, circuit breakers tripping, will make electrical equipment and cause burn or grade trip Power circuit breaker trips, so the bus voltage substation disappear, causing widespread power outages. Therefore, we must understand the possible occurrence of "rejecting" the causes and how to take place, "rejecting" after the failure of the deal! Welcome to inquire buy! Ningxia outdoor high-voltage circuit breakers | Huayi Electric Power (certified) | high voltage circuit breaker provided by Xian Huayi 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.