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SJKQ2Z ATS Switch Dual Power For LV Power

The SJKQ2Z ATS Automatic Transfer Switch integrates seamlessly with SJKM1 series circuit breakers to provide reliable power switching for 100A-1250A loads at 400V AC/50-60Hz. Designed for critical backup systems, this ATS features adjustable delay timing (0-30s), 2500V insulation withstand, and 5000-cycle mechanical endurance. With 3P/4P configurations and AC230V control voltage, the SJKQ2Z Automatic Transfer Switch ensures smooth transitions between primary and secondary sources while preventing flicker or breakdown. Ideal for industrial and commercial applications, it combines robust construction with intelligent monitoring for uninterrupted power distribution.

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    product details

    Type Designation

    Q2Z-ATS-Switch-Dual-Power-5
    1 Manufacturer Code
    2 Auto-Transfer Function
    3 Dervatve Code:
    (): NCCB; W Compact Type; W1: Economy Type; W2: smart type (Undervoltage/Phase-Loss/Off/Fire Protection)
    4 Function Code:
    R-Grid-to-Grid (Optional); F-Grid-to-Generator; M-Terminal Type (Optional);
    Y-Integrated Smart Type (Off/Fire Protection/Undervoltage); N-Split Smart Type (Off/Fire Protection/Undervoltage)
    5 Frame Size Current
    6 Number of Poles
    7 Rated Current (In)

    Setting Program Instructions

    SJKQ2Z-2

    1. LCD Display

    2. SET Button

    3. Right-Shift Button

    4. Increment Button(+)

    5. Decrement Button (-)/ Alarm

    6. Manual Mode Button

    7. Auto Mode Button

    8. Dual-Off Button

    Note: LCD display abbreviations : "auto-reclose“ (AR), "No auto-reclose" (NAR), "SF01" must not be changed.

    Step Key Press Display Data Operation Function
    1 SET CodE Enter setting mode Password setup
    2 >> OodE Press (︽ ︾ ) the first digit of the password Password setup
    3 >> 80dE Press (︽ ︾ ) the second digit of the password Password setup
    4 >> 880E Press (︽ ︾ ) the third digit of the password Password setup
    5 >> 8888 Press (︽ ︾ ) the fourth digit of the password Password setup 8888
    6 >> dddd/N-R 03s Correct password shows Normal-Backup transfer time Normal-Backup transfer time
    Press (︽ ︾ ) to set N-R 1st-stage delay
    7 >> N-R 03s Shows Normal-Backup transfer time Normal-Backup transfer time
    Press (︽ ︾ ) to set N-R 2nd-stage delay
    8 >> R-N 03s Shows Backup-Normal transfer time Backup-Normal transfer time
    Press (︽ ︾ ) to set R-N 1st-stage delay
    9 >> R-N 03s Shows Backup-Normal transfer time Backup-Normal transfer time
    Press (︽ ︾ ) to set R-N 2nd-stage delay
    10 >> SF 08s Show dual-off time Dual-off transfer time
    Press to set SF 1st-stage delay
    11 >> SF 08s Show dual-off time Dual-off transfer time
    Press (︽ ︾ ) to set SF 2nd-stage delay
    12 >> FFF 1 Press (︽ ︾ ) to set auto-recovery (1=ON, 0=OFF) ON,OFF
    13 >> FD 0 Press (︽ ︾ ) to full-auto generator mode to 0 and semi-auto model to 1 Starter Generator
    14 >> FC 0 Press (︽ ︾ ) to set priority (0=Normal, 1=Bacup) Priority setting
    15 >> H 130 Press (︽ ︾ ) to set Overvoltage setting (220V*130%) Overvoltage setting
    16 >> L 50 Press (︽ ︾ ) to set Overvoltage setting (220V*50%) Undervoltage setting
    17 >> NA 220V Press (︽ ︾ ) to calibrate Normal Phase-A voltage Show live voltage
    18 >> NB 220V Press (︽ ︾ ) to calibrate Normal Phase-B voltage Show live voltage
    19 >> NC 220V Press (︽ ︾ ) to calibrate Normal Phase-C voltage Show live voltage
    20 >> RA 220V Press (︽ ︾ ) to calibrate Backup Phase-A voltage Show live voltage
    21 >> RB 220V Press (︽ ︾ ) to calibrate Backup Phase-B voltage Show live voltage
    22 >> RC 220V Press (︽ ︾ ) to calibrate Backup Phase-C voltage Show live voltage
    23 >> SAVE Save data

     product Display

    Q2Z-ATS-Switch-Dual-Power-(1)
    Q2Z-ATS-Switch-Dual-Power-(2)
    Q2Z-ATS-Switch-Dual-Power-(3)
    Q2Z-ATS-Switch-Dual-Power-(4)

    Technical Parameters

    Model Circuit breaker Model Rack Current A Rated Operational Current
    SJKQ2Z-100/3 SJKM1 series 100


    225


    400


    630


    800


    1250    		 10/16/20/25/32/40/50/63/80/100
    SJKQ2Z-100/4
    SJKQ2Z-225/3 100/125/140/160/180/200/225
    SJKQ2Z-225/4
    SJKQ2Z-400/3 250/315/350/400
    SJKQ2Z-400/4
    SJKQ2Z-630/3 400/500/630
    SJKQ2Z-630/4
    SJKQ2Z-800/3 630/700/800
    SJKQ2Z-800/4
    SJKQ2Z-1250/3 800/1000/1250
    SJKQ2Z-1250/4
    Breaking Current (kA) Refer to the instruction manual of the specific circuit breaker model.
    Rated Operational Voltage (V) 400V
    Insulation Voltage (V) 2500 No flicker and no breakdown within one minute
    Frequency (Hz) 50-60HZ
    Delay time 0~30s Adjustable
    Control rated operating voltage(V) AC230V
    Mechanical Life 5000 time

    Outline and Installation Dimensions

    SJKQ2Z-5
    Size Dimensions W W1 L L1 H
    SJKQ2Z-100/3P 390 355 220 200 120
    SJKQ2Z-100/4P 420 385 220 200 120
    SJKQ2Z-225/3P 430 395 220 205 140
    SJKQ2Z-225/4P 465 435 220 205 140
    SJKQ2Z-400/3P 560 510 310 285 190
    SJKQ2Z-400/4P 605 555 310 285 190
    SJKQ2Z-630/3P 625 570 320 295 195
    SJKQ2Z-630/4P 690 635 320 295 195
    SJKQ2Z-800/3P 705 655 340 315 190
    SJKQ2Z-800/4P 780 730 340 315 190
    SJKQ2Z-1250/3P 730 675 480 365 280
    SJKQ2Z-1250/4P 800 745 480 365 280

    Installation and Usage Instructions

    SJKQ2Z-7

    21: Normal Neutral Line

    22: Alternate Neutral Line

    23,24: Normal Source ON Indicator light

    25,26: Alternate Source ON Indicator light

    27,28: Normal Source ON Indicator light

    29,30: Alternate Source ON Indicator light

    31,32: Duo Status Indicator Light

    33、34: Fire Signal Input / AC or DC6-24Dry

    35、36: Generator Contact (5A)