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

    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 1, 0.5, 0.5S, 0.2 and 0.2S. Low price and manufacturer direct sale.
    SKU: ATO-CT-1500
    Free Shipping Worldwide
    Delivery date: 6-20 days

    AC current transformer accuracy classes can choose 1, 0.5, 0.5S, 0.2, or 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.


    Product Name Current Transformer
    Model Number ATO-LMK1-0.66-60
    Weight 1 kg
    Current ratio (A) VA Secondary load/ Burden (VA) Cross-core turn number
    1 0.5 0.5S 0.2 0.2S
    300/5 5 5 5 5 5 1
    400/5 5 5 5 5 5 1
    500/5 5 5 5 5 5 1
    600/5 5 5 5 5 5 1
    750/5 10 10 10 10 10 1
    800/5 10 10 10 10 10 1
    1000/5 10 10 10 10 10 1
    1200/5 10 10 10 10 10 1
    1500/5 10 10 10 10 10 1
    Rated Frequency 50/60Hz
    Rated Test Voltage 3kV AC (1min)
    Rated short-time thermal current 60 in
    Rated dynamic current 2.5 lth
    Rated voltage 0.72 kV AC
    Continuous overload 1.2 in
    Operating temperature -10℃~50℃
    Housing self-extinguishing class VO
    Safety factor FS 5
    Secondary current 5A/ 1A
    Installation sites Indoor
    Ambient humidity ≦80%
    Altitude ≦1000m
    Atmospheric conditions No serious impurity in the atmosphere

    Dimension (unit: mm)

    Current Transformer

    Current Transformer Installation

    Current transformer installation

    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.

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    Current Transformer, 30/5A, 150/5A, 600/5A to 800/5A

    SKU: ATO-CT-800
    AC current transformer at a low price, rated frequency 50Hz/60Hz. Current ratio can choose 50/5A, 100/5A, 300/5A, 600/A to 800/5A, direct sales by manufacturer.