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

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

    5 out of 5 based on 4 reviews | Write a review
    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.
    SKU: ATO-ATS-225
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days


    • Suitable for 400V AC 50Hz power supply system with rated working current 100A, 125A, 140A, 160A, 180A, 200A, 225A.
    • 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 ATO-ZMQ2F/L-225
    Frame Current 225A
    Rated Operating Current (Optional) 100A, 125A, 140A, 160A, 180A, 200A, 225A
    Number of Poles (Optional) 3-pole 4-pole
    Breaking Current 22kA 30kA
    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 10.2kg 11.5kg
    Dimensions See below


    225 Amps Automatic Transfer Switch Details

    ATS Dimensions (Unit: mm)

    225 Amp Automatic Transfer Switch Dimensions

    Type W W1 L L1 H
    ZMQ2F/L-225/3P 430 395 215 195 140
    ZMQ2F/L-225/4P 545 510 215 195 140

    Wiring Diagram
    3-Pole or 4-Pole 225A 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: Structure of automatic transfer switch

    The automatic switch has a wide range of applications, such as elevators, banks and hospitals, where the power failure is absolutely unwanted. Once the power is cut off, it will cause huge economic losses and even endanger human safety.

    The automatic switch is mainly composed of a controller, a conversion mechanism and a body. The controller is very important, which is the same as the brain of the automatic changeover switch. It can control the switching between the two power sources. The conversion mechanism is composed of a drive mechanism and a transmission mechanism. Its role is to achieve non-stop disconnection and connection, and also determine the mechanical reliability of the automatic transfer switch. As for the body of ATS transfer switch, it is composed of contacts, contact mechanism and arc extinguisher, which directly determines the switch electrical characteristics.

    Existing reviews of Automatic Transfer Switch, 3/4 Pole, 100/125 to 225 Amps
    Perfect Transfer!
    I bought a auto transfer switch for my RV, the switch is easy to install, easy to use, with nice price and works flawlessly.
    From: Mar | Date: 29/06/2022
    Was this review helpful? Yes No (0/0)
    I have a question about the connection of your ATS controller.
    I have a question regarding connection of ATS of your type zmq5 160amps. In electrical control connection does it require additional connection to be automatic? Please kindly urgently reply to my question.
    From: Dunn | Date: 13/01/2022
    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, ATS will auto-transfer back to normal power.
    Looking for 110-240V AC automatic transfer switch
    Hi. Do you provide automatic transfer switch with working voltage of 110-240V AC (split type) ?
    From: Johnny | Date: 04/11/2020
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Hello, Johnny. We are sorry we do Not provide 110-240V split type, and our ATS is 3-phase, 380/400V only.
    Good automatic transfer switch
    The auto transfer switch was fast delivered and well-packed. When I received this unit, I first tested it with my generator. This unit did work. The installation was OK, not complex. Good products.
    From: Manu | Date: 03/01/2019
    Was this review helpful? Yes No (0/0)
    Load more reviews...
    Write your review for Automatic Transfer Switch, 3/4 Pole, 100/125 to 225 Amps
    • Only registered users can write reviews
    • Bad
    • Excellent
    Customers who bought this item also bought

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

    $1,486.98 $1,599.21
    SKU: ATO-ATS-800
    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.