1250A 4P Dual Power Automatic Static Transfer Switch

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  • 5 - 9 Pieces
  • 10 - 19 Pieces
  • >=20 Pieces
$900.00 /Pieces | 1 Pieces (Min. Order) | Buy Samples
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Quick Details
Place of Origin:
Zhejiang, China
Brand Name:
Model Number:
Max. Current:
Max. Voltage:
Automatic transfer switch
Product name:
Transfer switch
Rated Voltage:
Rated current:
Export wooden case packing
Gurantee period:
24 months
Supply Ability
Supply Ability:
1000 Piece/Pieces per Month transfer switch automatic transfer switch static transfer swit
Packaging & Delivery
Packaging Details
Standard export wooden case packing
Ningbo or Shanghai
Product Description

transfer switch  automatic transfer switch  static transfer switch

Quick Reply     Professional Consultation           Continued Cooperation 


This switch is suitable for the double-circuit power supply system of AC50/60Hz, rated voltage below 690V and rated current below 4000A, to realize automatic or manual transfer between normal power(N) and standby power(R), (Main and standby power supply can be a grid, starting generator, battery, main and standby power supply is defined by the users) then to get an unmanned transformer station for dual-power users. The product is applicable to the provisions of the state for class or a class load user, where power failure is impermissible such as high-rise building, post and telecommunication, coal ship, industrial assembly line, medical, military facilities, airports, fire protection, metallurgy, chemical industry, textile, petroleum and etc.

Normal working conditions

1, The air temperature is -25℃~+40℃, the average value within 24hours should not be over 35 ℃.

2, The relative humidity should not exceed 50% at max temperature +40℃, the higher relative humidity is permissible at lower temperature for instance, 90% at +20℃, but the condensation will be produced due to temperature change, which should be considered.

3, The altitude of mounting place should not exceed 2000m.

4, Classification: IV; Inclination is not more than ±23℃.

5, Pollution grade: 3

6, If beyond above mentioned conditions, users should negotiate with the manufacturer. If the product is used for sea, petroleum and nuclear power station, the technical agreement shall be sighed separately.

Technical data
Model       /   ItemASQ-63AASQ-125AASQ-250AASQ-630AASQ-800AASQ-1250AASQ-1600AASQ-2000AASQ-2500AASQ-3150AASQ-4000A
Usage categoryAC-33iB
Rated working voltage(Ue)AC400V
Rated insulation voltage(Ui)690V
Rated impulse withstand voltage(Uimp)8kV6kV8kV
Rated short-time withstand current(lcw)5kA10kA10kA20kA40kA60kA60kA80kA80kA100kA125kA
Rated short circuit making capacity(lcm)7.65kA17kA17kA40kA60kA60kA80kA100kA125kA160kA200kA
Operating endurance(times)100005000
Pole No.2 
Operating cycls(s/times)20s
Switching time1-99s(delay)
Contact us for more details!! 
Product photo

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! "