NK Technologies Main Selection Page

NK Technologies Main Selection Page

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AC and DC Current Switches

AS1 Series, Single-Range AC Current Switch

AS1 DODC Series, Current Switch with Dual Output

AS3 Series, Multi-Range AC Current Operated Switches

ASM Series, Self-Calibrating AC Current Switches

ASX Series, AC Current Switches with Time Delay

ASXP Series, Powered AC Current Switches with Time Delay

AS0 Series, Low Range AC Current Operated Switches

DS3 Series, DC Current Operated Switches

AC and DC Current Transducers

AT Series, AC Current Transducers, Average Responding

ATR Series, AC Current Transducers, True RMS

AT/ATR 3 & 4 Series, High Current AC Transducers

ATP Series, Powered AC Current Transducers

ATP/ATPR 3 & 4 Series, Powered AC Current Transducers, True RMS

DT Series, DC Current Transducers

Ground Fault / Earth Leakage Sensors

AG Series, Ground Fault/Earth Leakage Sensors - Solid-State Relay Output

AG Series, Ground Fault/Earth Leakage Sensors - Mechanical Relay Output

AGL Series, Large Aperture Ground Fault Sensors

NK Technologies Current Switches


AC and DC Current Switches
Current switches: A broad range of AC and DC current sensing devices with a variety of AC and DC contacts. Available with fixed and adjustable setpoints for underload and overload detection.

NK Technologies Current Transducers


AC and DC Current Transducers
Selecting the right transducer: VFD and SCR output waveforms are rough approximations of a sine wave. There are numerous spikes and dips in each cycle. ATR transducers use a mathematical algorithm called "True RMS," which integrates the actual waveform over time. The output is the amperage component of the true power (heating value) of the AC current waveform. True RMS is the only way to accurately measure distorted AC waveforms. Select ATR transducers for nonlinear loads or in "noisy" power environments. The current waveform of a typical linear load is a pure sine wave. AT transducers measure the peaks of these sine waves, then calculate the average amperage. This works well on constant speed linear loads in a "clean" power environment. Select AT transducers for strictly linear loads on "clean" power.

NK Technologies Ground Fault/Earth Leakage Sensors


Ground Fault / Earth Leakage Sensors
Ground Fault Sensors: ‘AG’ Series sensors from NK Technologies protect people, products and processes from ground faults by monitoring all current-carrying wires in grounded single or 3-phase systems. Operating Principle: Under normal conditions, the current in the hot leg of a two-wire load is equal in strength but opposite in sign to the current in the neutral leg. These two currents create magnetic fields that are also equal but opposite. When conditions are normal, the fields cancel, producing a "Zero Sum Current". If any current leaks to ground from one wire (Ground Fault), the two currents become imbalanced and the result is a net magnetic flux or field. AG Series ground fault sensors monitor this field and alarm when leakage rises above setpoint. This concept applies to grounded 3-phase delta and wye systems.