Item:VD4 medium-voltage

11kv vacuum circuit breaker

12kv vacuum circuit breaker


     VD4 medium-voltage indoor vacuum circuit breaker is applicable for three-phase  AC power system of rated voltage upto 7.2kV~24kV and frequency 50/60HZ,widely used in many fields such as power plant, transformer substation, petrol chemical industry , metallurgy , manufacturing industry , airport, residential area, etc., to control and protect the electric equipment, especially , It is used for the occasion that needs infrequent operation at rated current or multi-breaking short circuit current, may be mounted in the indoor air insulating switchgear like type KYN28 or KYN96,  ABB type ZS series, etc. This circuit breaker is standards as GB1984-2003  AC high voltage circuit breaker ,JB3855 3.6-40.5Kv indoor  AC High voltage circuit breaker ,DL/T403 Specification of 12-40.5Kv indoor High voltage vacuum circuit breaker for order as well as IEC60694. This circuit breaker is made with mature  APG technology . The application of VD4terminal buffer guarantees the indoor terminal is ever more reliable in nay operation environment. VD4 can fully meet the requirement of GB, DL, IEC, DIN, VDE as well as standards of other advanced industrial countries.

Service environment:

  • a) Airtemperature: Maximumtemperature: +40℃; Minimumtemperature:-25℃
  • b) Humidity: Monthly average humidity 95%; Daily average humidity 90%.
  • c) Altitude above sea level: Maximum installation altitude: 2500m
  • d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
  • e) Nofrequent violent shake
    Main technical specifications:






   Rated voltage




 Rated f requency




  Rated current


 630, … 4000A


 1min Power f requency withstand voltage




 Lightning impulse withstand voltage




 Rated short circuit breaking current (peak)




 Rated short breaking current


 20, …31.5


 Rated short circuit making current (peak)




 Rated cable(line) charging breaking current


 50 and 10


   Rated single capacitor bank switching current




 Rated withstand current (peak)




  Short time withstand current (4s)


  20, …40


 Mechanism life



 Note: For short circuit breaking current & rated currentis optionalby clients.

Indoor 400A 11kv vacuum circuit breaker

Q:How to guarantee my order and payment.
A:Ezitown has Alibaba trade Assurance,100% refundable if any quality or delivery problem.

Q:How to return the goods if meet any problem
A:we have DHL and Fedex account for return goods.buyer no need to pay any shipping cost for returning. Can contact our salesman to operate.

Q:Why Ezitown price is competitive, and quality seems rather good ?
A:because we have been manufacturing more than 20 years, we know what price and Quality buyer can sell well in market.the wholeseller have suitable profits

Q:Can we order many items and make combine shipment.
A:we can combine many items,and deliver by courier/sea/land/air etc. pack well.

Q:Can I order the cabinet/enclosure/box and the wiring material from you or other supplier,you make wiring and assembly for us ?
A:we have egineering, wiring and assembly team for low voltage/medium voltage/high voltage/DC control .can make drawing and diagram to confirmation and proceed the assembly.we have unite nation project in regular assembly.
Q:How can I make our own brand for my order
A:we supply OEM service if order quantity meet the OEM MOQ , contact to know the exactly quantity for your item

Q:What is the delivery if I make payment
A:Almost all items we keep in stock.and we have many order every day , We need 1-3 working days to packing and make delivery.OEM packing will be longer time.

Q:Can we visit your factory or office ?
A:we always welcome customer visit us, let me know the schedule, we will arrange.