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CAGE Code: 5DME2
ITAR Registration Code: M28889

- December 15th 2017 -
Call: 1 (800) 377-3244
We Are Open Monday-Friday 8 am - 5 pm PT

  • Careers
  • CT-00X (50Hz - 800Hz)

    Encapsulated Current Transformer. CT-000 Series AC Current Sense Transformer.
    Very High Accuracy. Linearity is 1% from 0 to 25 Amps
    Customer install single turn primary to make current sense transformer

    • Pre-set secondary winding for most common application
    • Nominal Rated Primary Current = 25 Amps @ 50/60 Hz
    • Recommended Operating Primary Current Range = 0.25 Amps to 50 Amps @ 50/60 Hz
    • Turns Ratio = 1:1000
    • Max Rated DC Resistance @20 deg.C = 40 Ohms
    • Dielectric Withstanding Voltage (HI-Pot) = 2.5 KV / 1 mA
    • 1 % Linearity To 25 Amps, 2% Linearity from 25 Amps to 50 Amps
    • Burden Resistance = 5 Ohms
    • Designed for 50 Hz to 800 Hz current transformer and current sensing applications
    • 2500 Vrms primary to secondary for hi-pot
    • Encapsulated construction for robust operation


    Click the button to see examples of our custom wound products. We wind anything to meet your needs.
    See PDF file in table below for outline drawing and schematic
    For use in Industrial and Commercial environment
    Packaged in Bulk only

    1) No tooling or set up fees required for standard parts
    2) Minimum order : $25.00. Free samples available to large OEMs
    3) Typical Delivery: Stock to 4 weeks


    Please see pdf files listed in Shop Cart below for details.

    Part Numbering

    CT - 000A

    CT : Current Sensor Type
    000: Series
    A : Rev number

    ) The prices shown below are for low volume quantity. Please call 800-377-3244 or
    email for larger volume OEM pricing.
    ) Our large OEM pricing is extremely competitive. We will meet or beat any competitors prices with better deliveries
    ) Custom designs are available to meet any of your requirements. Please contact us
    ) The data shown below can be sorted by clicking each column header.Click once again to sort in reverse order.
    5) Stock Quantity shown below can be shipped immediately as engineering samples.All stock quanitities are valid on the Date shown and are subject to prior sales. For production quantities, lead time is 4 weeks for any quantities.

      Part Number Primary Rated
    Current (Amps)
    @ 50/60 Hz
    Max DC
      CT-000A 50 A 43 Ohms 1:1000 1% 5 Ohms $5.00
    Buy Now
      CT-002A 25 A 43 Ohms 1:1000 3% 5 Ohms $5.00
    Buy Now

    Disclaimer: Coil Winding Specialist, Inc., its affiliates, agents, and employees acting on behalf of Coil Winding Specialist, Inc. (collectively, CWS) disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. CWS reserves the right at any time and from time to time to make changes to design, technical specification, or construction of any product listed on this website without notice. CWS also reserves the right to discontinue or limit sale of any product or service available throughout this website on temporary or permanently basis without notice. CWS highly recommends customers not to use its products offered on this website for inappropriate use and applications. Products should be tested for its suitability by prospective customers in all possible applications and conditions. Customers using or selling CWS products for use in other than recommended applications do so entirely at their own risk and agree to fully indemnify CWS from any damages arising or resulting from such use or sale.

    WARNING: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go

    Any Comments, Suggestions or Questions? Contact us! Email:
    CWS 353 West Grove Ave. Orange, California 92865
    Call us Toll Free: 1-800-679-3184 or 1 (800) 377-3244

    Tel: (714) 279-9010, Fax: (714) 279-9482

    Copyright 2008, Coil Winding Specialist, Inc
    Updated July, 2013

    CAGE Code: 5DME2(Registered with