(0) Shopping cart
You have no items in your shopping cart.
Shopping Categories

    Automatic Transfer Switch, 3/4 Pole, 630/700/800 Amps

    5 out of 5 based on 3 reviews | Write a review
    Reliable intelligent automatic transfer switch with microcomputer controller is best ATS for changeover between common-used power and standby power at rated working current 630 amp, 700 amp or 800 amp and rated voltage 400VAC 50Hz, adjustable 0~30s delay time, simple wiring and easy installation, high performance and long service life, suitable for residential areas, military facilities, hospitals and other areas.
    SKU: ATO-ATS-800
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days


    • Suitable for 400V AC 50Hz power supply system with rated working current 630A, 700A, 800A.
    • This ATS is an intelligent self-protection transfer switch mainly including two parts - microcomputer controller and transfer switch.
    • With automatic and manual operation, machinery and electrical double interlock feature.
    • ATS has three switching position for options: common power ON, dual power OFF, standby power ON.
    • Small size, light weight, stable performance, reliable operation and easy to use.
    • Applied for residential areas, military facilities, hospitals, shopping malls, airports and so on.


    Model ZMQ2F/L-800
    Frame Current 800A
    Rated Operating Current (Optional) 630A, 700A, 800A
    Number of Poles (Optional) 3-pole 4-pole
    Breaking Current 35kA 37.5kA
    Rated Operating Voltage 400V AC
    Insulation Voltage 2500V, no flicker and no breakdown for one minute
    Frequency 50/60Hz
    Delay Time 0-30s (Adjustable)
    Controller Rated Working Voltage 230V AC
    Mechanical Life 5,000 times
    Structural Type (Optional) Integral type (F) or split type (L)
    Environment Altitude ≤2000m
    Ambient Temperature -5℃~+40℃, the 24-hour average temperature does not exceed +35℃
    Relative Humidity RH≤50% @ +40℃; at a lower temperature, it is allowable to have a higher humidity.
    Please pay more attention to the condensation produced on the product surface with the change of humidity.
    Installation No explosive medium, and no medium of gas and dust is enough to corrode and damage the insulation.
    No significant shock and vibration.
    Standards Compliance to IEC6094-6-1, GB14048.11-2008
    Protection Class IP30
    Weight 36kg 39kg
    Dimensions See below


    630/700/800 Amps Automatic Transfer Switch Details

    ATS Dimensions (Unit: mm)

    800 Amps Automatic Transfer Switch Dimensions

    Type W W1 L L1 H
    ZMQ2F/L-800/3P 710 655 335 315 190
    ZMQ2F/L-800/4P 785 725 335 315 190

    Wiring Diagram
    3 Pole or 4 Pole Automatic Transfer Switch Wiring Diagram
    * The above wiring diagram is just for your reference. With the different types and functions, the wiring is also different.
    * When the fire takes place, EPS signal is on (provided by firefighting center) and the circuit breakers Q1 & Q2 is released or cut off.
    * Q1 & Q2 refer to circuit breakers.
    * KG refers to the wiring terminals.
    * The R & N power ON indicator lamps are external (provided by users).
    * The dashed part is supplied by users.

    ATS Transfer Switch Wiring

    * 3P refers to 3-pole circuit breaker and 4P means 4-pole circuit breaker.
    * 24VDC (external) is supplied by the fire control center.

    Tips: Automatic transfer switch troubleshooting

    1. Automatic transfer switch does not move when connected to the power, and the controller light is not on.

    • Possible causes:
      1. Whether the installation wiring is correct and tight;
      2. Whether the fuse is blown.
    • Troubleshooting:
      1. Check whether the circuit breaker's incoming end is loose and the wiring fails. If there is any disconnection, reconnect it.
      2. For 3-pole ATS, the neutral line should be connected to the neutral terminal.
      3. Replace the fuse.

    2. The controller power light flashes.

    • Possible causes:
      1. Power failures: power overvoltage; poor power line contact; controller failure.
      2. Power light blinks, buzzer alarm.
    • Troubleshooting:
      1. Readjust the incoming line and supply voltage.
      2. Check whether the incoming power supply has a loss of phase, or a loose connection.
      3. Insert the controller plug again or replace the controller.
      4. The neutral line and phase line of the power supply are connected reversely and reconnect it correctly again.
    Existing reviews of Automatic Transfer Switch, 3/4 Pole, 630/700/800 Amps
    I have a problem with the ATS connection.
    I have question in regarding connection of ATS of yours type zmq5 160amps, in electrical control connection does it require additional connection for being automatic? Please kindly urgently reply my question.
    From: Jalan | Date: 19/01/2022
    Was this review helpful? Yes No (0/0)
    ATO Responded
    No additional connections are required for being automatic. Just select type 1 for ATS controller model, which means full auto. So:-
    When normal power is off, the ATS will automatically transfer to standby power. When normal power recovers, the ATS will auto-transfer back to normal power.
    Dual Power Automatic Transfer Switch (ATS), split or integral model
    I was watching on your automatic transfer switches on the website. For this series of Dual Power Automatic Transfer Switch (ATS), just to understand better, it has the split or integral model, which is the difference between the two?
    From: Alan | Date: 06/05/2020
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Hi, Alan. The main difference of the integral or split model is whether the control system and switch part are combined or separated.
    Both of ATS switch fast when the mains supply is off.
    I bought two 4-pole auto transfer switches and have installed them. Both of ATS switch fast when the mains supply is off. Work great!
    From: Stewart | Date: 12/07/2018
    Was this review helpful? Yes No (0/0)
    Load more reviews...
    Write your review for Automatic Transfer Switch, 3/4 Pole, 630/700/800 Amps
    • Only registered users can write reviews
    • Bad
    • Excellent
    Customers who bought this item also bought

    Automatic Transfer Switch, 3/4 Pole, 100/125 to 225 Amps

    $574.61 $685.77
    SKU: ATO-ATS-225
    Affordable price intelligent automatic transfer switch with 3P or 4P circuit breaker, has optional operating current ratings from 100 amp, 125 amp to 225 amp, and rated working voltage 400V AC 50Hz. ATS transfer switch is equipped with microcomputer controller, easy and reliable operation with automatic and manual operation, adjustable 0-30s delay time, ideal for changeover between your common power supply and standby power supply like generator.