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CAGE Code: 5DME2
ITAR Registration Code: M28889

- October 22nd 2019 -
Call: 1 (800) 377-3244
We Are Open Monday-Friday 8 am - 5 pm PT

Current Sense Transformers and SMPS

Current Sense Transformers 50/60Hz, 200Hz, 400Hz, 800Hz and SMPS

Please click on "READ ME" to read about the differences between the various types of Current Transformers listed below and some basic information on each series.
The CT and CT-100X Series are for 15Hz to 50Hz/60Hz to 200 Hz line frequency current sensing applications. It has an accuracy class of 0.5% to 5%. The CT Series is a low cost series consisting of 9 families and 35 different models to choose from to meet your design requirements. CT-100X has a higher cost.
The 72-000, 72-100, 72-200, 72-300, 72-400 and 72-500 Series current transformer are mainly used in 20 Khz or higher switching frequencies in a switch mode power supply. There are over a hundred models of the 72 series to choose from to meet your design requirement.

For more information on Applications please refer to: Application Information on Current Sense Transformers
Reading before installing

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

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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