NK Technologies AT Series AC Current Transducers

NK Technologies

Key Features:

  • Factory matched single piece transducer is more accurate than traditional two-piece field installed solutions
    Average Responding
  • “Average Responding” algorithm gives a RMS output on pure sine waves. Perfect for constant speed (linear) loads
    Jumper Selectable Range
  • Reduces inventory
  • Eliminates zero and span pots
  • Output is magnetically isolated from the input for safety
  • Eliminates insertion loss (voltage drop)
    UL, CUL and CE Approval
  • Accepted worldwide
Product Options:

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'AT' Current Transducers from NK Technologies combine a current transformer  and signal conditioner into a single package. The AT Series has jumper selected current input ranges and industry standard 4-20mA, 0-5VDC or 0-10VDC outputs. The AT Series is designed for application on 'linear' or sinusoidal AC loads.  Available in a split-core case or two types of solid-core cases.

NK Technologies AT Series AC Current Transducers, Jumper Selectable Input Ranges, 0 - 5 VDC, 0 - 10 VDC or 4 - 20 mADC Output

  -005 Model -010 Model -420 Model
Output Signal 0–5 VDC 0–10 VDC 4–20 mA
Output Limit 8.2 VDC 15 VDC 32 mA
Accuracy 1.0% FS
Response Time
(10–90% step
100 ms 300 ms
Frequency Range 50–60 Hz 20–100 Hz*
Other Frequencies Special calibration available for any
frequency from 10–400 Hz*
Power Supply Self-powered 12–40 VDC,
Loop powered
Loading 1 megohm min.,
100 KΩ add 1.3% error
Contact factory
for power requirements
Isolation Voltage UL listed to 1270 VAC, tested to 5 KV
Input Ranges Field-selectable ranges from 0–200 A;
custom ranges available; consult factory.
Sensing Aperture • -FF Case: 0.55” (14 mm) dia.
• -FT Case: 0.74” (19 mm) dia.
• -SP Case: 0.85” (21.6 mm) sq.
Case UL94 V0 Flammability Rated
Environmental -4 to 122°F (-20 to 50°C)
0–95% RH, non-condensing
Listings UL 508 Industrial Control Equipment
(USA & Canada), CE

*For sinusoidal waveforms only. Select ATR Transducers for distorted waveforms.

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Automation Systems

  • Analog current reading for remote monitoring and software alarms
  • Data Loggers

  • Self-powered transducer helps conserve data logger batteries
  • Panel Meters

  • Simple connection displays power consumption