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AC Current Transducer / Switch ATS Series
Weschler Instruments is a manufacturer and distributor of electrical and electronic measurement equipment. Customers worldwide use our products in power plants, steel mills, chemical plants, paper mills and other industrial applications that require rugged, reliable and accurate instrumentation.
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AC Current Transducer / Switch ATS Series
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NK Technologies
AC Current Transducer / Switch ATS Series

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The ATS Series Current Sensors combine a current operated switch and transducer into a single package for use in AC current applications up to 1200 A. The large sensing window provides complete isolation between the primary circuit and the controls. The DIN rail mounting makes installation a breeze, and provides a very secure mount that is resistant to conductor movement.


  • Patented rotary switch setpoint selection (patent pending).
  • Output is magnetically isolated from the input for safety.
  • Analog signal powered from the sensor; no loop powered required.
  • 4-20mA signal proportional to 0-1200 AC Amps.
  • Single Pole Double Throw Relay changes state with power to sensor.
  • LED indication if power is removed from the sensor or primary current exceeds adjustable trip point.
  • Integral DIN rail mount with spring loaded mounting clips.


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Item #

Output Signal

Power Supply

Case Style

ATS-420-SDT-24D-DL 4-20 mADC 24 VDC Solid-core, DIN rail mount
ATS-420-SDT-120-DL 4-20 mADC 120 VAC Solid-core, DIN rail mount
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