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    Current Transformer, 200/5A, 400/5A, 600/5A to 1000/5A

    5 out of 5 based on 2 reviews | Write a review
    Low price current transformer can select ratio 200/5A, 300/5A, 600/5A and 1000/5A. rated frequency 50Hz or 60Hz, small size and light weight, manufacturer direct sale.
    SKU: ATO-CT-60I
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    Current transformer is used to convert large currents in the AC circuit into a small proportion of current for measurement and relay protection. Current ratio 250:5A, 400:5A, 750:5A, 800:5A to1000:5A, cheap price, good quality and free shipping.

    Note: The installation method of current transformer can be fixed by busbar and fixed by the bottom plate, suitable for installation in any direction. The primary conductor can be busbar or cable.


    Model ATO-CT-60I
    Weight 1kg
    Current Ratio (A) VA Secondary load/ Burden (VA) Cross-core Turn Number
    0.2 0.5S 0.2S
    250-450/5 2.5 2.5 2.5 1
    500-800/5 5 5 5 1
    1000/5 / 5 5 1
    1200-1250/5 / 15 10 1
    Rated Frequency 50/60Hz
    Rated Test Voltage 3kV AC (1min)
    Rated Short-Time Thermal Current (ith) 60 in
    Rated Dynamic Current (idyn) 2.5 lth
    Rated Voltage (Um) 0.66 kV AC
    Continuous Overload (ld) 1.2 in
    Operating Temperature -10℃~50℃
    Housing Self-Extinguishing Class VO
    Safety Factor FS 5
    Secondary Current 5A/ 1A
    Bus Specification (mm)/Number 1


    Current transformer dimension

    Model Dimensions Perforation size Installation size
    W H D a e φ M N
    ATO-CT-30I 62 78 45 32 11 22 40 57.5
    ATO-CT-3030I 85 102 50 32 11 28  / 57.5
    ATO-CT-40I 75 95 45 42 11 31 40 57.5
    ATO-CT-60I 102 130 45 61.5 21 45 42 57.5
    ATO-CT-60II 102 125 45 31 33 / 42 57.5
    ATO-CT-80I 118 140 45 82 11 52 60 57.5
    ATO-CT-100II 145 125 45 103 35 / 80 57.5

    Current Transformer Troubleshooting

    • There should be no open circuit on the secondary side of the current transformer in operation. Once the open circuit occurs on the secondary side, high temperature caused by excessive iron loss may burn out the current transformer or enhance the voltage of secondary winding, thus breaking down the insulation and leading to the danger of high voltage electric shock. Therefore, when replacing a meter such as an ammeter, active power meter and reactive power meter, please ensure the current circuit in short circuit before operation. If the current transformer makes a buzz sound, please check if the internal core is loose, fasten the core bolt.
    • Shell of the current transformer’s secondary side shall be grounded reliably.
    • When the insulation resistance of the current transformer’s secondary side coil is lower than 10~20M ohms, drying process is required to recover the insulation before use it again.
    • When the current transformer gets faults, safety operation of the primary system circuits will be affected, please report promptly to the higher authorities and heads of departments concerned to cut off the fault current transformer timely, then treatment it. As for the open circuit of secondary winding, treatments shall be implemented according to actual conditions. After necessary safety precautions are made according to relevant regulations, the current transformer can be put in use again.
    Existing reviews of Current Transformer, 200/5A, 400/5A, 600/5A to 1000/5A
    Works fine
    These current transformers are quick and simple to assemble. You just need a little soldering experience and it goes right together. I am using it to measure a couple motors and there is no problems. It seems to work really well.
    From: Stults | Date: 29/06/2022
    Was this review helpful? Yes No (0/0)
    High cost effective current transformers
    It's a cheap price, and I bought two current transformers, one current ratio 300/ 5A, and a current ratio 400/5A.
    They worked very well, and accurately, the quality is in my demand.
    From: Martines | Date: 08/11/2018
    Was this review helpful? Yes No (0/0)
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