• Description:
  • This dual power automatic transfer switches are newly developed industrial power transfer switches.This switch is mainly used to test whether the normal or standby power supply is normal.When the narmal power supply is abnormal,the backup power supply will work immediately to ensure the continuity,reliability and safety of the power supply.

    • Industrial Automatic Transfer Switch 250A 4 Poles 110V 220V Grid to AC Generator

    Description:

    This dual power automatic transfer switches are newly developed industrial power transfer switches.This switch is mainly used to test whether the normal or standby power supply is normal.When the narmal power supply is abnormal,the backup power supply will work immediately to ensure the continuity,reliability and safety of the power supply.

    Auto mode: Common p ower supply must be City Grid Power.  Backup power must be AC genarator. When there is only one power supply is working, the product will automatically switch to that power supply. When the common power supply and the backup power supply are supplied at the same time, the common power supply is used Preferentially.(Attention: in automatic mode, forcibly rotating the power switch handle will cause damage to the transfer switch)
    Manual mode: Power supply should be transfered manually by rotating the handle.
    Application: Industrial, residential and various occasions where continuous power failure is not allowed.
    Function: Auto mode and Manual mode for choise.

     

    Feature:

    High performance,reliable quality
    We work with every effort to provide quality products and professional service.

     

    Specification:

    Rated Current Ie(A): 250a

    Rated Insulation Voltage Ui (V):8kv

    Rated Control Voltage Ue (V):Ac110v/60hz

    Rated Signal Terminal Voltage: Ac110v

    Rated Operational Voltage:Ac110v

    Model:Q4-250/4p

    Level:Pc

    Use Category:Ac-338

    Rated Impulse Withstand Voltage(Kv):6kv

    Life    Electrical:8000times; Mechanical: 3000times

    Rated Short-Circuit Current Connection Capacity:8ka

    Rated Short-Time Withstand Current(Icw):5ka/30ms

    Transfer/Return Time:2.5s-3s

    Weight:9.8kg

     

    About Delivery:
    We have warehouses in California and New Jersey
    We will follow the principle of nearest delivery
    When one warehouse is out of stock, it will be shipped from another warehouse
    Thank you for your understanding

     

    Package Product List:  

    1 × Automatic Transfer Switch

    1 × Manual Book



    About us

    *. it is preferable that you email us. We will try to answer most emails within 3 days.E043

    Shipping

    *. We will delivery the package within 3 business day after your payment is cleared by PayPal.

    *. We Ship from USA stock! Fast shipping!

    Payment

    *. We accept Paypal ,Google pay, Visa,Master Card, American Express, Discover.eBay Mastercard etc.

    *. After  auction closing，pay as soon as possible.

    Contact Us
    • *. We are open Monday to Friday 8am to 5:30pm  Pacific Standard Time, and Saturday 8am to12noon . Our friendly staff are available during these hours. Please feel free  send us a message via eBay.
    Terms of sales

    *. All the items are double checked before shipment, if the item is defect when you recieve it, please contact us for help, we will respond you within 24 hours and resolve your issue asap.

    *. If you are not satisfied with the transaction, please contact us . we'll do our best to solve your problems.

    *. If you are satisfied with your purchase and services, please give us a positive assessment and comprehensive assessment, the four to five stars.

    Industrial Automatic Transfer Switch 250A 4 Poles 110V 220V Grid to AC Generator

    Description:

    This dual power automatic transfer switches are newly developed industrial power transfer switches.This switch is mainly used to test whether the normal or standby power supply is normal.When the narmal power supply is abnormal,the backup power supply will work immediately to ensure the continuity,reliability and safety of the power supply.

    Auto mode: Common p ower supply must be City Grid Power.  Backup power must be AC genarator. When there is only one power supply is working, the product will automatically switch to that power supply. When the common power supply and the backup power supply are supplied at the same time, the common power supply is used Preferentially.(Attention: in automatic mode, forcibly rotating the power switch handle will cause damage to the transfer switch)
    Manual mode: Power supply should be transfered manually by rotating the handle.
    Application: Industrial, residential and various occasions where continuous power failure is not allowed.
    Function: Auto mode and Manual mode for choise.

     

    Feature:

    High performance,reliable quality
    We work with every effort to provide quality products and professional service.

     

    Specification:

    Rated Current Ie(A): 250a

    Rated Insulation Voltage Ui (V):8kv

    Rated Control Voltage Ue (V):Ac110v/60hz

    Rated Signal Terminal Voltage: Ac110v

    Rated Operational Voltage:Ac110v

    Model:Q4-250/4p

    Level:Pc

    Use Category:Ac-338

    Rated Impulse Withstand Voltage(Kv):6kv

    Life    Electrical:8000times; Mechanical: 3000times

    Rated Short-Circuit Current Connection Capacity:8ka

    Rated Short-Time Withstand Current(Icw):5ka/30ms

    Transfer/Return Time:2.5s-3s

    Weight:9.8kg

     

    About Delivery:
    We have warehouses in California and New Jersey
    We will follow the principle of nearest delivery
    When one warehouse is out of stock, it will be shipped from another warehouse
    Thank you for your understanding

     

    Package Product List:  

    1 × Automatic Transfer Switch

    1 × Manual Book



    *. it is preferable that you email us. We will try to answer most emails within 3 days.E043

    *. We will delivery the package within 3 business day after your payment is cleared by PayPal.

    *. We Ship from USA stock! Fast shipping!

    *. We accept Paypal ,Google pay, Visa,Master Card, American Express, Discover.eBay Mastercard etc.

    *. After  auction closing，pay as soon as possible.

    • *. We are open Monday to Friday 8am to 5:30pm  Pacific Standard Time, and Saturday 8am to12noon . Our friendly staff are available during these hours. Please feel free  send us a message via eBay.

    *. All the items are double checked before shipment, if the item is defect when you recieve it, please contact us for help, we will respond you within 24 hours and resolve your issue asap.

    *. If you are not satisfied with the transaction, please contact us . we'll do our best to solve your problems.

    *. If you are satisfied with your purchase and services, please give us a positive assessment and comprehensive assessment, the four to five stars.


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    On May 23, 2026 at 03:50:41 PDT, seller added the following information:

    Datacaciques