Wire Connectors, Termination Lugs

NK Technologies New 3 Phase AC Transducer

Innovative Triple-aperture Design Makes Monitoring Three-Phase Loads Easy

The AT/ATR-TH Current Transducer's large triple-aperture, solid-core design allows for a quick and easy installation. Just thread the conductors through the sensing windows (apertures) and reconnect on the other side. The sensor is designed to accommodate wire sizes for loads up to 200 amps.

The transducer outputs are powered from an excitation voltage of 24 VAC or DC, or optionally 120 VAC, isolated from the monitored circuit. Three outputs are proportional to the AC current in each phase and a fourth represents the average of the three. Each are available at any time.

  • Analog signal proportional to AC current; both average and True RMS models available
  • Choice of ranges: 0–10 to 0–200 amps
  • Externally powered, 24 VAC or DC (22–18V) or optionally 120 VAC
  • Factory calibrated and warranted to stay accurate for five years
  • Snap onto DIN rail or attach with screws to a panel for secure mounting

Read more information on the AT/ATR-TH Series
Read more application information here


  • Detect over or under current conditions before they cause break downs in large machinery or interlock one process with another.
  • Detect open discharge lines, clogged filters or blocked intake to pumps in water delivery and treatment.
  • Monitor motor current draw which should be nearly equal in all three phases. A difference of 10% signifies trouble.

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