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WCM3720A AC Current Sensing Module


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  • Stock: Out Of Stock

    Availability: NotInStock priceValidUntil: 2026-09-11

  • Brand: Winsen
  • SKU: 731 | DAA453

Availability: NotInStock priceValidUntil: 2026-09-11

  • Rs. 1,150.50 (inc GST)
    Rs.975.00 + GST

    Qty :

GST Invoice: Available for all purchases; eligible for input tax credit.

Delivery: 2–8 days across India. No MOQ required.

Bulk Orders: Need a larger quantity or item not in stock? Email: dnatechindia [at] gmail.com

Import Service: We import a wide range of electronic components on request.

WCM3720A AC Sensing Current Module


The Winson WCM3720A current Sensor Module provides economical and precise solution for AC current sensing in industrial, commercial and communications systems. The unique package allows for easy implementation without breaking original system and make current sensing possible. Typical applications include load detection and management, over-current fault detection and any intelligent power management system etc…

The WCM3720A module consists of a current sensor and a very high accuracy Analog to Digital converter, power on/off switch, digital signal of current and a setting current over control output and an internal regulator for sensor. The WCM3720A includes a current sensor with a diameter 9mm hole, users can just use system’s own electric wire by pass it through this hole to measure passing current without breaking original system, user’s MCU can get the real data from DATA pin.

We have Various sizes of Modules. Check out our complete collection of  Modules


If you are in Nashik you can buy this Electronic Component at our local shop at New CBS, Nashik or you can place order online and get it delivered at your doorstep anywhere in India.

Feature of WCM3720A

  • Operating Voltage: 4.0 V ~12.0 V for Vcc

  • Isolation Voltage 4KV

  • Digital current data output, easy interface with MCU (UART communication)

  • Baud Rate: 2.4K bps

  • Internal regulated voltage for sensor

  • Measurement range: 0A – 20A

  • Built-in LCD driver

  • Resolution: I < 10A: 1 mA I ≧  10A: 10 mA

  • Accuracy (0A ～ 20A): 80mA ~ ± 5%

  • Can setting 1~15A over-current protection control

  • Calibrated by 5V,could customize different voltage calibration

  • Provide 3.3V operating module


Applications of WCM3720A

  • AC Current meter

  • Current Protector

Extra Information
Country of Origin China
Imported By ElectroSource Private Limited

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Frequently Asked Questions

Do you provide a GST bills?
Yes we provide GST Bill by the name of DNA Solutions. You will receive a GST compliant invoice for your records. You can take GST benefit.
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Returns/replacements depend on the item type and condition. If there’s an issue, contact us with photos/videos and we’ll guide you as per policy.
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After dispatch, you’ll receive a tracking link/number via email/WhatsApp/SMS (as applicable).
I forgot to add GST number at time of placing order, but I need GST Invoice in my firms name?
You can contact us via Contact us page and send your order details and GST number we will send you updated Invoice soft copy.
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Yes — we accept POs. To process a PO faster, share: PO copy, billing address, shipping address, GSTIN (if applicable), and contact number. We’ll confirm availability, price, and dispatch timeline.
What if I received fewer / more quantity than ordered?
Send your order number and unboxing photo/video. We’ll verify and resolve quickly.
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