ZW7A-35 Series outdoor high voltage vacuum circuit breakers main switchgear of AC50Hz, 35KV, which is assembled with spring operating or electromagnetic operating mechanism. It can be operated to switch on/off by remote control, and it is also charged and switched on/off by hand. The design function of breaker complies with the requirements of GB1984-89 and IEC56 “AC high voltage circuit breaker”, it is mainly used in outdoor 35KV distribution system to control and protect, also for normal operating and protecting short circuit of urban,rural network, or industrial enterprises. Its overall structure is supported by porcelain insulator, vacuum interrupter built in upper insulator, downside insulator used for supporting. The breaker applies
frequent operating places with the advantages of good sealing anti-aging, high-voltage withstand, non flame, non explosion long working life, easy installation and maintenance and etc.
For frequent operation place
Good sealing, anti-aging, high pressure, no burning, no explosion, long life, convenient installation and maintenance features
1, Altitude:not exceed 1000m
2, Ambient temperature:not higher than +40°C,not less than - 15°C
3,Relative humidity:daily average relative humidity:≤95%;monthly average relative humidity :≤95%;monthly avergae relative humidity ≤90%, daily avergae saturated vapor pressure ≤2.2KPa;monthly average value: ≤1.8KPa.
4, Earthquake intensity: ≤8 degree
5, The installation should be free from fire,explosion,severe vibration,chemical corrosion and serious pollution.
Rated insulation level(KV)
1min withstand voltage
Lightning impulse withstand voltage(peak)
Rated short circuit breaking current(KA)
Rated operating sequence
Rated short-circuit opening times
Rated short circuit closing current(peak)(KA)
Rated peak withstand current(KA)
Rated short-circuit withstand current(KA)
Rated duration of short-circuit(S)
Aveage breake speed(m/s)
Average closing speed(m/s)
The jump time of contact close breake(ms)
Time difference of closing(breaking) three phase at the same time(ms)
Rated operating voltage and aux circuit rated voltage(V)
DC resistance of circuit for every phase(S)
Contacts limit erosion(A)
1.We can make the products as different’s special require.
2.Flexible lead time
3.We can offer products at different prices
4.We have our own workflow (AISO process)
5.Any way, any time, your problems will be timely reply
"Do you have a catalogue? Can you send me the catalogue to have a check of all your products?"
Yes , We have product catalogue.Please contact us on line or send an Email to sending the catalogue.
"Whether can produce as my require?"
"Yes,we can make the products as different’s special require."
"How long the product warranty?"
"Normally, the warranty for the product is 18 months , warmly reception with the calling, visiting and letters, and give the best answers and solution in time from the customers for the technical problem."
"What kind of payment do you accept ? Can I pay RMB ?"
"We accept T/T(Wire transfer),Western Union and Paypal. And you can pay money In RMB. No problem."
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