Item :LW36-72.5

72.5kv 3150a outdoor SF6 circui breaker


ROCKWILL developed LW36-72.5 type outdoor SF6 gas circuit breaker using modern processing technology and computer-aided design techniques, combined

with the latest generation of spring bodies and the advantages of a permanent institution. Its pursuit of high reliability, easy to maintain design concepts to create ageneration of superior product, is the most reliable electric power system and the best option.

ROCKWILL all series switches meet the following criteria:

ANS/IEEE C37.60/IEC 62271-100(GB1984-2003 China standard)

GBT11022-1999 China Standard
IEC 60255-11
IEC 60255-21-1 Class I
IEC 60255-21-2 Class I
IEC 60255-21-3 Class I
IEC 60255-22-1 Class III
IEC 60255-22-2 Class IV
IEC 60255-22-3 Class III
IEC 60255-22-4 Class IV

Using of the enviroment:

Ambient temperature:-40℃~+40℃, the daily average temperature:25℃;

Altitude:≤ 3000m(in excess of the value of technical discussions with the divisionI);

Wind speed:35m/s;

Earthquake intensity: not more than 8 degrees;

Degree of ambient air contamination level not greater than:III level;

Daily average ambient air relative humidity≤95%, on average≤90%;

Saturated vapor pressure of daily mean values≤ 2.2*10^(-3)MPa, on average≤1.8*10^(-3)MPa;

More about the use of environment conditions, please consult with the manufacturer.

Main technical specifications:






Rated voltage




Rated frequency




Rated current




1min power frequency withstand voltage




Lingthning impluse withstand voltage(peak value




5 min power frequency voltage at zero gas pressure




Rated short circuit breaking current




Rated out-of-phase breaking current




 Rated cable(line) charging breaking current(peak)




 Rated gas pressure




 Main loop resistance




 Operation sequence



 SF6 gas leakage rate(per year)




 Moisture content(V/V)



  15                                                       Across the open contacts   mm


Creepage distance

                                                               TO earth



Mechanical life




Note: For short circuit breaking current & rated current is optional by clients.


LW36-72.5 type outdoor SF6 circui 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.