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    Automatic Transfer Switch, 3/4 Pole, 100/160/250 Amps

    5 out of 5 based on 1 reviews | Write a review
    Auto transfer switch (ATS) has rated current of 100 amp, 160 amp and 250 amp available, 4-Pole, with the function of full auto, forcedly switching off “0” position, remote control and manual emergency operation etc. Fast switch on and off the circuit or transfer between the power sources, to achieve the safe isolation.
    SKU: ATO-ATS-250
    Free Shipping Worldwide
    Delivery date: 6-12 days

    ATS Features

    • Suitable for operating in the distribution system of rated voltage 400V AC, 50Hz, and conventional thermal current up to 250 Amperes in the industrial enterprises.
    • With the operation function of voltage detection, forcedly switching off “0” position, manual emergency operation, it is widely used to shift between normal power and standby power or two loading equipment, or perform safe isolation and etc.
    • The control circuit board will govern the motor through logic commands, and then motor will drive the operating mechanism of main switches, quickly closing or opening or shift the lines, to realize the safe isolation of main switch obviously.


    Model ATO-ZMQ5
    Rated Operating Voltage Ue 400V AC
    Rated Operating Frequency 50Hz
    Coventional Thermal Current (Amp) 100A 160A 250A
    Rated Insulation Voltage Ui 750V
    Rated Impulse Withstand Current Uimp 8kV
    Rated Operating Current Ie (Amp) AC-31A 100A 160A 250A
    AC-35A 100A 160A 250A
    AC-33A 100A 160A 250A
    Rated Short Time Withstand Current Icw 7kV 9kV
    Rated Short-circuit Current Limit 100kA
    Control Supply Voltage* 220V AC
    Transfer Time 0.5s 1s 1.1s
    Number of Poles 4-Pole
    ATS Controller Mode (Optional)* Type Ⅰ Full auto
    Type Ⅱ Full auto + forcedly switching off "0" position
    Type Ⅲ Full auto + remote control
    Standards Compliance to IEC6094-6-1, GB14048.11-2008
    Weight 18kg 30kg 39kg
    Dimensions See below


    * For the specific functions of ATS controller mode, please check below

    1. Full auto
    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.

    2. Forcedly switching off “0” position
    Push “0” button forcedly, and ATS will cut off two loops of power supply.

    3. Remote control
    Push “I” button, and normal power will be in service; push “II” button, and backup power will be put into use; push “0” button, and two loops of power supply will be cut off.

    Auto Transfer Switch Dimensions (Unit: mm)

    Auto transfer switch dimensions

    Type A A1 B B1 C E G J K L N P R S T U W X Y Y1
    100A/4 247 244 106 105 134 143 115 233.5 84 7 74.5 30 14 18 2.5 105 126 Φ6 36 86
    160A/4 322 300 135 128 230 189 145 284 102 7 91 36 20 25 3.5 127 158 Φ9 55 125
    250A/4 406 362 170 142 261 208 145 343 102 7 91 50 25 30 3.5 142 168 Φ11 60 145

    ATS Mounting & Wiring Diagram

    1. Mounting method

    Auto transfer switch mounting methods

    2. Wiring diagram

    Auto transfer switch wiring diagram

    Tips: What is STS static transfer switch?

    STS static transfer switch is an automatic switching system of choosing one power source from two. When the first loop of power source fails, STS will automatically switch to the second one to supply power to the load (the premise is that the second loop is normal and it is basically synchronous as the first loop), and vice versa. It is suitable for the constant electricity changeover of any loop in UPS-UPS, UPS-generator, UPS-city power, city power-city power. All above power sources require the synchronous equipment, so as to require the basically synchronous of the two power sources, otherwise STS is unable to be changed over.
    STS static transfer switch is mainly constituted by the intelligent control panel, high-speed silicon controlled rectifier and the circuit breaker. Its standard changeover time is less than 8ms, thus it will not cause the outage of the IT-category load. It not only supplies power to the load reliably, but also guarantees the security of STS in changing among different phases.

    Existing reviews of Automatic Transfer Switch, 3/4 Pole, 100/160/250 Amps
    Good transfer switch, easy to install and use.
    Excellent product. Easy to install and easy to use. I have already made several times test and it worked as advertised. Very simple to transfer from the main to generator power and back.
    From: David | Date: 15/11/2018
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