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    Split Core Current Transformer, 100mA DC, 25mm

    The split core current transformer for online detection of DC leakage current, range of 0.0mA ~ 100mA DC, power supply 12V DC, wide application in DC power supply system busbar, and each branch insulation condition real-time monitoring.
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    📅 Delivery: 7-12 days

    The split core current sensor is suitable for online detection of high-precision DC leakage current and DC current, with a jaw size of Φ10mm and a range of DC 0.0mA to 100mA. sisco split core current transformer makes it easy to use and can be connected to industrial control equipment, data loggers, oscilloscopes, high-precision digital multimeters, and other equipment.

    Split core current transformer DC 25mm

    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.
    • Output interface: 4-wire or 5P terminals (V- power negative, V+ power positive, AL alarm light control terminal, GND power and output ground, 0UT output terminal)


    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-ETCR025KD
    Power ±12V DC
    Range 0.0mA~100mA AC
    Resolution 0.01mA AC
    Accuracy Grade ±3.0%
    Phase Error ≤2°
    Variable Ratio 800:1
    CT Size φ25mm
    Signal Output 50mV/1mA
    Shielding Double shielding, suitable for complex interference environment
    Output Mode Induction current output
    Output Interface 4 pole cable
    Safety Level CATI600V
    Dimension 53mm x 42mmx 28mm
    Mass 75g
    Working Temperature -15°C~ 50°C
    Dielectric Strength AC 3700V/rms (between core and case)

    Dimension Unit (mm)

    Split core current transformer 100mA DC 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: What is the relationship between the primary winding and the secondary circuit of the current transformer?

    • Primary winding and high-voltage circuit in series, depending only on the high-voltage circuit current where it is located, and the secondary load size has nothing to do with it. 
    • The secondary circuit is not allowed to open circuit, otherwise, it will produce dangerous high voltage, endangering personal and equipment safety. 
    • The secondary circuit must have a point of direct grounding to prevent high voltage to the ground after the insulation breakdown of primary and secondary windings, but only a point of grounding. 

    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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