ZW37-40.5 model outdoor vacuum circuit breaker is high voltage swit ch of ra ted
voltage 40.5kV and three -phase. It a pplies to make and break big current,
overload current and short-circuit current in power system. The applicable
occasion includes substations, industry and mining, u rban and rural electric ity
power networks, functioning as electric protection and control apparatus; it is
especially applicable in occasions with frequent operation and automatic power
distribution network. This product is qualified in type test executed in Beijing
electric power research institute and conforms with IEC 62271-100 standards.