Current Sensing Switch
Current Indicators
Current Transducer
December 31, 2009

SymCom Monitor

RM-2000 Coal Bed Methane Special /777 combination optimizes gas production from coal bed methane wells while protecting the submersible pump. The 777 provides unmatched pump protection while the RM-2000 CBM Special cycles the pump based on pressure measurements from one or two 4-20 mA pressure transducers. The first transducer measures down hole pressure while an optional second transducer can be used to measure annulus pressure.

SSAC Monitor

The WVM Series provides protection against premature equipment (motor) failure caused by voltage faults on the 3 Phase Line. The WVM's microcontroller design provides reliable protection even if regenerated voltages are present. It combines dependable fault sensing with a 10 fault memory and a 6 LED status display. Part instrument, part control, the WVM protects your equipment when you are not there.

Neilsen Kuljian

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Neilsen Kuljian NK Technologies

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NK Technologies ATR Series Current Transducers Distributors
Current Transducers

Current Transducers are designed to provide an analog current reading for monitoring, data logging and panel meter applications, these current transducers offer a choice of 0-5VDC, 0-10VDC or 4-20mA average responding or True RMS outputs. Self-powered and split-core options make these a cost-effective choice as a PLC input in motor status applications or where VFDs are involved.

  • Average Responding or True RMS Output
  • Jumper Selectable Ranges
  • Solid-core,Split-core and Large Aperture Models
  • AC or DC Current Options

If you are looking for NK Technologies Current Transducers, please call us on (800) 894 - 0412 or email us at we will do our best to help you find the Neilsen Kuljian Current Switches that you are looking for at the most competitive prices possible. If you are searching for NK Technologies Voltage Transformers technical information (data-sheets) please use the datasheets or product selection guide page links.

NK Technologies AS1 Series Current Operated Switches Distributor
Current Operated Switches

Ideal for off/on status, overload or underload indication. Current sensing switches from NK Technologies combine a CT, signal conditioner and output contacts into a single package for use with industrial and factory automation equipment.

  • Multiple Output Ranges
  • Adjustable or Fixed Setpoints
  • Models with Integral Time Delay Available
  • Choice of N.O. or N.C., AC or DC Contacts
  • Self-powered and Split-core Options
NK Technologies AG Series Ground Fault Sensors Distributors
Ground Fault Sensors

Detecting ground fault conditions and protecting sensitive equipment or personnel from harm are where AG Series sensors can help. A compact design eliminates two-piece solutions while options include factory-set or field adjustable trip point; N.O. or N.C. latching or auto-reset relays, 24/120/240V power supply and noise immunity.

  • N.O./N.C. Solid State Switch or Mechanical Relay Outputs
  • Field Selectable 5mA, 10mA or 30mA Setpoints
  • Noise Immunity Option for EMI/RFI Sensitive Environments
  • UL, CE Approved
NK Technologies APN and AP0 Series Power Transducers Distributor
Power Transducers

Measure loads and improve performance by providing instantaneous True Power kW or accumulated kWh data. Simple, reliable and accurate. Digital communications available in some models. Contact the factory or a local distributor for more information.

  • 4-20mA, 0-10VDC, and/or Networked Outputs
  • Accepts Standard 5A or 0-333mV CT Inputs
  • Optional LCD Display and RS232 Output
  • DIN-rail Compatibility
NK Technologies VTR Series True RMS Voltage Transducers Distributors
Voltage Transducers

The 'VTR' Series from NK Technologies is a high-performance True RMS transducer for single- and three-phase sensing. Applicable on nominal circuits of 120V, 240V and 480V, the VTR provides a fully isolated 4-20mA output proportional to percent of nominal voltage, even in situations with non-sinusoidal waveforms. A compact enclosure, DIN-Rail compatibility and snap-fit quick-connect terminal blocks make installation and wiring quick and easy.

VTD Series Voltage Transducers are high-performance transducers for sensing voltage in DC powered installations. Applicable for use on circuits to 600 VDC, VTD voltage transducers provide a fully isolated, 4-20mA output proportional to rated nominal voltage in DC circuits. Housed in a slim, compact, easy-to-install DIN-rail mount enclosure, the VTD Series comes in a variety of nominal voltages.

NK Technologies Split-Core Current Transformers Distributor
Current Transformers

Current transformers (CTs) for use with power transducers, panel meters, and in two-piece installations with transducers and switches to extend ranges for high amperage/large conductor applications.

  • 5 Amp or 0-333mV Secondary Outputs
  • Split-core or Solid-core Enclosures
  • Agency Approved
  • Ratios from 50 Amps to 200 Amps
NK Technologies CTC Series Signal Converters 5 Amp Secondary & .333mVAC Distributors

Signal Converters

Signal Converters

CTC Series Signal Converters allow you to use an existing standard 5 amp secondary or low-voltage ProteCT current transformer over a conductor to produce an industry standard 4-20 mA two-wire, loop-powered signal. The signal is proportional to the current in the primary circuit. The CTC series snaps onto a standard DIN rail. The output is connected to the load and a 24 VDC source and the current transformer is connected.

The ADC Series connects up to eight 4-20 mA looppowered analog sensors, or up to eight separately powered 4-20 mA output sensors, or up to four of each. This will produce a digital signal representing 0-100% of each sensor output. It is the perfect solution for photovoltaic power production system monitoring. The ADC converter allows for individually-ranged devices to interface with the industry standard Modbus RTU serial protocol.

NK Technologies AMPFlasher ACI Series AC Current Indicators Distributors

AMPFlasher ACI Series

AC Current Indicators

The AMPFlasher ACI Series Current Indicator is a compact, inexpensive, easy-to-use LED ring which slips onto a conductor to give a flashing indication of current flow. Ideal for use in control panels, or wherever confirmation of current flow is desired, AMPFlasher current indicators are a cost-effective way to detect live conductors and see current flow to fans, heaters, pumps, lighting or other powered devices.

  • Quick visual status of electric motor load.
  • Identify open heater circuit connection.
  • Provide panel mounted indication of current draw on monitored load.
  • Confirmation of operation for critical lighting or equipment.
NK Technologies PBR Series PowerBASE Relays Wireless Transceivers Distributor


PBR PowerBASE Series are industrial-grade relays in a specially designed package.

DIN Rail Kits provide a convenient method to facilitate the mounting of the AGL, VTR, APT, and APMR Series of NK Technologies' sensors.

Sensicast Wireless Transceivers offer a cost-effective way to connect sensors or KW meters where output wiring is a challenge.

NK Technologies' Parent Company was a System Integrator. Neilsen Kuljian began automating industrial sites in Silicon Valley in 1982. An early NK Technologies project required close control of AC motors and electric resistance heaters. A thorough search found that there were no products available that could accurately monitor these loads. So NK Technologies engineers developed a unique self-contained current operated switch. Word of this NK Technologies Current Switches invention quickly spread throughout the control engineering community. Orders began coming in from System Integrators and NK Technology distributors across the country and around the world.

In 1986 the Board of Directors decided that Neilsen Kuljian should focus on developing innovative, current sensors and power monitoring products. This decision led to tremendous growth, which, in turn, led to a flood of new products Current Transformers, Current Switches, Current Transducers, Ground Fault Sensors, Power Monitors, Voltage Transformers, and Voltage Transducers. In the late 1990's, the NK Technologies division was formed to meet the overwhelming demand for new products and services from Industrial Integrators, distributors and End users. A network of Neilsen Kuljian Manufactures Representatives and Authorized NK Technologies distributor brings technical expertise and quick product delivery around the world.

Neilsen Kuljian ATR transducers use a mathematical algorithm called "True RMS," which integrates the actual waveform over time. Select Neilsen Kuljian ATR transducers for nonlinear loads or in "noisy" power environments. ATR transducers from NK Technologies combine a current transformer and a True RMS signal conditioner into a single package. NK ATR Current Transducers are available in a solid or split core case. AT Current Transducers from NK Technologies combine a current transformer and signal conditioner into a single package. The AT Series NK Current Transducer has jumper selected current input ranges and industry standard 4 to 20mA, 0 to 5VDC or 0 to 10VDC outputs. AT/ATR 3 and 4 transducers from NK Technologies combine a high capacity current transformer and a signal conditioner into a single package. The ATR version of NK Technology Current Transducer is True RMS for use on distorted waveforms found in VFD or SCR outputs. DT Current Transducers from NK Technologies combine a Hall effect sensor and signal conditioner into a single package. The DT Series Current Transducer has jumper selectable current input ranges and industry standard 0-20mA, 4-20mA, 0-3VDC, 0-5VDC or 0-10VDC outputs.

Our industrial factory automation supplies distributors warehouse in Boise, Idaho stocks some NK Technologies products enabling us to further assist you in finding the correct voltage transducer for your application in the USA, Canada & Mexico. Whether we have power sensing products in stock in Boise, Idaho or need to ship direct from NK Technologies to any USA cities; Clearwater Tech can get current transformer to you fast and save you money! It will be very helpful if you have the ground fault sensor part numbers ready, then our sales representatives can provide you with a pricing and availability quote for PBR power base relay that you are looking for in seconds. If you do not have the part numbers for DIN-rail kits, our application engineers will be able to help you figure out the part numbers and get the price quote to you as soon as possible.

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