Current Sensors for Automation 
For over two decades, NK Technologies has remained the premier manufacturer of Current Sensors and Transducers serving the factory and industrial automation markets. With one of the broadest product portfolios in the industry, NK Technologies provides reliable, innovative current sensing products designed to add value and exceed our customers’ expectations.
From motor monitoring to heater status, semiconductor tools to water/wastewater plants, NK Technologies has a family of current sensors to meet your application needs. Thermo/Cense stocks a wide variety of NK products to help meet your needs.
Current Sensing Switches
Ideal for off/on status, overload or under load indication. Current 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 Set points
- Models with Integral Time Delay Available
- Choice of N.O. or N.C., AC or DC Contacts
- Self-powered and Split-core Options
AMPFlasherTM Current Indicator 
A compact inexpensive, easy-to-use LED ring which slips onto a conductor to give a flashing indication of current flow. Available options include models with pigtail outputs for remote LED applications or with normally open solid-state contacts.
- 5/16th inch ID suitable for conductors up to 100A
- Low sensitivity turn-on point detects currents as low as 0.5A with a single conductor pass
- High visibility flashing LED gives visual status
- Compact 1" package with cable tie for secure mounting
- Optional 12" pigtails for remote mounting of LED or solid-state N.O. contacts
Current Transducers
Designed to provide an analog current reading for monitoring, data logging and panel meter applications, these 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
Voltage Transducers 
High Performance True RMS AC voltage transducer for single or three phase sensing. Applicable on nominal circuits of 120V 240V, 480V. Compact enclosure, DIN-rail compatibility and snap-fit quick connect terminal blocks for quick and easy installation.
- 120V–500V Nominal Range
- 4–20mA True RMS Output
- 24V Loop Powered
- DIN-rail Mounting
Power Sensing Products
Measure loads and improve performance by providing instantaneous True Power kW or accumulated kWh data. Patented Auto Phase functionality corrects for phase relationship errors due to incorrect wiring. Optional LCD displays up to 25 separate variables including power factor, kVA, kW, kWh and power frequency.
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
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.
