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    Split Core Current Transformer, 20A AC, 10mm

    Split core current transformer measuring range 0.00mA to 20A AC, CT size Φ10mm, accuracy class 0.5, double shielded, suitable for complex interference environments. The Leakage current transformer provides a cost effective way to measure current without disconnecting the conductor, thus reducing installation and commissioning time.
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    📅 Delivery: 7-12 days

    Buy split core current transformer online, resolution 0.01mA AC, 800:1 ratio, open-close structure, no power outage without disconnecting the measured line, ideal for online installation. Split leakage current transformer is popularly used for data logging energy management and as power monitoring.

    Split core current transformer 10mm

    Non-contact measurement is convenient, fast, and safe.

    • Open-close structure, no need to disconnect the measured line without power failure, especially suitable for online installation. Non-contact measurement, is convenient, fast, and safe.
    • sisco split core current transformer adopts PoMo alloy core, CT double shielding technology, stable performance and high precision, strong anti-interference ability, suitable for complex interference environment.
    • The range, ratio, and output interface of the sensor can be customized according to customer requirements.
    • A split core current transformer enables to clamp of the fire wire and zero wire together to measure the leakage current of cable wires and electrical equipment.
    • The split core current transformer is available with either a current signal or a voltage signal.


    High-precision split current transformers are an indispensable accessory for small, medium, and large electronic companies. The sisco slip current transformer is suitable for use in power equipment testing, communications and telecommunications, railway and oilfield monitoring, building and construction companies, research and teaching units, industrial and mining records, and other fields.  

    Clamp-on current transformer applications

    Model SISCO-ETCR010K
    Range 0.00mA~20A AC
    Resolution 0.01mA AC
    Accuracy Grade 0.5
    Phase Error ≤2°
    Variable Ratio 800:1
    CT Size φ10mm
    Secondary Load ≤10Ω
    Shielding Double shielding, suitable for complex interference environment
    Output Mode Induction current output
    Output Interface 2-core shielded line 2M
    Frequency 10Hz~100KHz
    Safety Level CATI600V
    Dimension 53mm x 42mmx 28mm
    Mass 65g
    Working Temperature -15°C~ 50°C
    Dielectric Strength AC 3700V/rms (between core and case)


    Dimension Unit (mm)

    Split core current transformer 10mm dimension


    Q1: What is a split-core current transformer?
    A1: Split core current transformer is made of high strength PVC shell, fully cast busbar type structure. a split core current transformer is directly stuck on the cable with three sexual rubber rings against the cable and the cable one. The transformer core uses better silicon steel rolled, the secondary wire evenly wound in the core. Transformers for the open and closed structures can be installed without cutting the cable.

    Q2: What is the meaning of the circles of the split core current transformer?
    A2: On electrical system diagrams, a small circle is often used to represent a winding, and a circle is used to represent a winding. If you have two circles in a series, that means that the open and closed current transformer has two windings. If you have three circles in a series, that means you have three windings.

    Q3: What is a split core current transformer error?
    A3: Due to the structure of the split core current transformer core and material properties, the current transformer has an excitation current I0, which makes it produces errors.

    Tips: Notes for installation of split core current transformer

    1. Construction according to the drawings, wiring correct, both ends of the line number label should be clear, label range in line with the requirements.
    2. Current and voltage circuits should be grounded at the outlet of the transformer's secondary side. The voltage circuit should be protected by a fuse.
    3. The secondary return line of the panel cabinet should be free of connectors and the middle of the control cable or line should be free of connectors. If there is a connector, it should be connected through its long junction box.
    4. The secondary circuit of the split core current transformer should have good insulation to the ground, and there should be no mixing of the voltage circuit and current circuit.
    5. The secondary circuit wiring should be arranged neatly and beautifully, and the connection screws between the wiring and electrical components and junction box should be free of false looseness. The distance between the wiring tying points should meet the requirements.
    6. The cycle can not be reversed, phase sequence and phase difference should meet the requirements of the design and regulations. For transformer wiring with differential protection, the phase diagram of the two arms must be measured before putting it into operation to check the correctness of the wiring.
    7. Secondary circuit wire or cable should be used copper wire. split core current transformer circuit cross section shall not be less than 1.5mm. outlet junction box shall be selected with special current terminals. split core current transformer unused secondary winding shall be short-circuited and grounded on the terminal block.

    Thank you for buying industrial test and measurement equipment on, all products sold by SISCO and the partner cover a 12 months warranty, effective from the date of receiving the products.

    What is covered?

    SISCO is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.

    What is not covered?

    • Product purchased from anyone other than a SISCO store or a SISCO authorized reseller.
    • Expendable parts.
    • Routine cleaning or normal cosmetic and mechanical wear.
    • Damage from misuse, abuse or neglect.
    • Damage from use of parts other than SISCO approved.
    • Damage from use outside the product’s usage or storage parameters.
    • Damage from use of parts not sold by SISCO.
    • Damage from modification or incorporation into other products.
    • Damage from repair or replacement of warranted parts by a service provider other than a SISCO authorized service provider.
    • Damage caused by the application environment not meeting the product usage requirements and the failure to perform preventive maintenance.
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