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    Current Transformer, 300/5A, 600/5A, 1000/5A to 1500/5A

    5 out of 5 based on 1 reviews | Write a review
    Current transformere ratio can select 300/5A, 500/5A, 800/5A and 1500/5A, rated frequency 50Hz and 60Hz are avaliable, accuracy classes can choose 0.5S and 0.2S. Low price and manufacturer direct sale.
    SKU: ATO-CT-60II
    30-day Returns
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    Delivery date: 6-12 days

    AC current transformer accuracy classes can choose 0.5S, 0.2S, current ratio 300:5A, 600:5A, 800:5A and 1500:5A are optional, low cost 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-60II
    Weight 1kg
    Current Ratio (A) VA Secondary load/ Burden (VA) Cross-core Turn Number
    0.2 0.5S 0.2S
    1000/5 / 5 5 1
    1200-1250/5 / 10 10 1
    1500/5 / 10 10 1
    2000/5 / 10 10 1
    2500/5A / 20 20 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 /

    Dimension (unit: mm)

    Current transformer dimension 1500 5a

    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

    Tips: Current Transformer Working Principle

    Working principle of the current transformer is based on the electromagnetic induction principle, circuit current often flows through its primary winding. When the current transformer works, its secondary circuit keeps closed, therefore, the impedance of series coil of measuring instrument and protection circuit are very small, the working state is close to the short circuit.

    Current transformer consists of closed iron core and winding. It has few primary winding that are connected in series in the current circuit under measurement; however, it has many secondary winding, which are connected in series in the measuring instrument and protection circuits. The current transformer plays the role of converter and electrical isolation, it’s a sensor for measuring instrument, relay protection and other secondary equipment to obtain current information of primary circuit in power system. It converts the high current to a low current by ratio, its primary end is connected with the primary system, while the secondary end is connected with the measuring instrument and relay protection.

    Existing reviews of Current Transformer, 300/5A, 600/5A, 1000/5A to 1500/5A
    How can we install your current transformer?
    How can we install your current transformer?
    From: Gregory | Date: 03/08/2020
    Was this review helpful? Yes No (0/0)
    ATO Responded
    There are two methods for the installation of CT, one is that it can be installed with busbars, and the other is that it can be installed using a bottom plate. (we shall proivde the bottom plate)
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