LW8A-40.5 Outdoor High Voltage SF6 Circuit Breaker With Photo

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  • 5 - 9 Pieces
  • 10 - 19 Pieces
  • >=20 Pieces
Lead Time:
Quantity(Pieces) 1 - 5 6 - 10 11 - 20 >20
Est. Time(days) 7 10 15 Negotiable
Customized logo (Min. Order: 5 Pieces)
Customized packaging (Min. Order: 5 Pieces)


Graphic customization (Min. Order: 5 Pieces) Less
$6,000.00 /Pieces | 1 Pieces (Min. Order) | Buy Samples
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Quick Details
Place of Origin:
Zhejiang, China
Brand Name:
Model Number:
High Voltage
Poles Number:
Circuit Breaker
Product name:
Sf6 circuit breaker
Rated Voltage:
Rated current:
Rated frequency:
Mechanical life:
Accept special order
Supply Ability
Supply Ability:
100 Piece/Pieces per Month breaker sf6 circuit breaker type circuit breaker
Packaging & Delivery
Packaging Details
Standard export wooden case packing
Wooden pallet easy handing
Ningbo or Shanghai
Lead Time :
Quantity(Pieces) 1 - 5 6 - 10 11 - 20 >20
Est. Time(days) 7 10 15 To be negotiated
Product Description

LW8A-40.5 Outdoor High Voltage SF6 Circuit Breaker With Photo



 Act as the protecting and controlling unit for grid equipments and industrial mining enterprises’ equipments,LW8-40.5 type outdoor SF6 circuit breaker is an outdoor device used in AC 50HZ three-phase 40.5KV power system. It is applicable to locations that need frequent operating in rated current or under repeatedly on/off short circuit current. Containing the current transformer for measurement and protection, it can directly replace SW2-35 less oil circuit breaker and various types of oil circuit breaker with transition bracket. It can also be used as a tie breaker and switching capacitor group situations with CT14 type spring mechanism.



GB/T28001-2011 idt OHSAS18001:2007

GB/T24001-2004 idt ISO14001:2004


        Excellent breaking performance, short burning arc time, long life;

Mechanical life of more than 3000 times;

Operation frequently, each can be installed 12 current transformers;

New type SF6 MKZ pointer type density meter, pressure gauge reading is not affected by temperature changes; 

 Environmental Condition

Ambient temperature:-30℃~+40℃


Wind pressure:≤700Pa

Relative humidity:daily average relative humidity: ≤95%;monthly average relative humidity≤90;daily average saturated vapor pressure ≤2.2KPa;monthly average value   ≤1.8KPa

Air pollution level:Ⅲ

Earthquake intensity:≤8 degree

The installation should be free from fire, explosion, severe vibration, chemical corrosion and serious pollution

Main Technical Parameters
Rated voltageKV40.5
Rated insulation levelLightning impact withstand voltage(full wave peak)185/215(isolating break)
1min power frequency withstand voltage95
Rated currentA16002000
Meachanical lifeTimes3000
Rated SF6 gas pressure(at 20℃)Mpa0.45
Self-locking pressure(at 20℃)0.45
Lowest working ambient temperature-30
Rated short circuit breaking currentKA2531.5
Rated short circuit making current(peak)6380
Rated short withstand current(Thermal steady current)2531.5
Rated peak withstand current(dynamic steady current)6380
Rated out-of-phase breaking currentKA6380
Duration of rated short circuit currentS4
Closing time(at rated operating voltage)≤1
Opening time(at rated operating voltage)≤0.07
Rated operating sequence(O)-0.3S-(CO)-180S-(CO)
Rated breaking/making sigle capacitor currentA400
Nos of breaking rated short circuit breaking currenttimes1510
Yearly gas leakege%/years≤1
Water content in SF6(at 20℃)PPM(V)≤150
Rated voltage of assembied spring operating mechanismV-220
Voltage of closing coil, opening coilAC:220
Voltage of charging motorVAC:220
SF6 WeightKG8
Breaking weight including operating mechanism1400

Note:Please contact the factory to confirm the latest parameters

Outline And Installation Dimension

Product Pictures And Use
Related Products

Our Services

Our Services


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."


"Any requirements or question,welcome to ""Send"" us an e-mail  Now!!!


It's our great honor to do services for you! "




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