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NK Technologies - DS3 Series, DC Current Operated Switches
   
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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
DS3 Series, DC Current Operated Switches
 
DS3 Series Current Operated Switches combine a Hall effect sensor, signal conditioner and a limit alarm into a single package. The DS3 Series offers three jumper-selected current input ranges and frequency response from DC to 400Hz. Available in a solid-core case with choice of relay or a universal solid-state output. NK Technologies DS3 Series
Download Complete Specifications in .pdf Format
Applications :
Welders and Platers
Instant indication of equipment status.
Large Drive Motors
Provides enhanced field loss protection.
Power Supplies
Signals over-current before equipment fails.
Machine Operation
Instant status of motors, lamps and other loads.
Telecom Sites
Monitors battery output.
Features:

  • Compact, One-piece Design - ..Fits in easily amongst motor starters and power supplies in crowded control panels.
  • Input Isolation - Safer than shunt/relay combinations.
  • Output Installation - Isolated output greatly simplifies wiring.
  • Tough - Designed to handle harsh industrial environments.
  • Adaptive Hysteresis - Hysteresis is 5% of setpoint, allowing closer control than fixed hysteresis switches.
  • Built-in Mounting Feet - Simple, two-screw installation allows for secure mounting.
 
Download Complete Specifications in .pdf Format
Specifications:
Output Isolated Dry Contact
Output Rating
  • Solid State: 0.15A @ 240VAC or VDC (N.O. Only)
  • Relays: 5.0A @ 240VAC, 5.0A @ 30VDC (SPDT)
Off State Leakage <10µA
Response Time
  • 100ms (10% above setpoint)
  • 20ms (100% above setpoint)
Setpoint Range 4–20, 10–50 and 20–100A (DC) jumper selectable (derate by square root of 2 for AC)
Hysteresis 5% of Setpoint
Isolation Voltage 3kV
Frequency Range DC to 400Hz
Sensing Aperture 0.75” (19.1mm) dia.
Case UL94 V0 Flammability Rated
Environmental -4 to 122oF (-20 to 50oC) 0–95% RH, noncondensing

..-40 to 140oF (-40 to 60oC) (Solid state output only)
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Ordering Information Download Complete Specifications in .pdf Format
Solid-Core Models Only
Model Description Output
Add part number DS3-SDT-24U to your Quote. DS3-SDT-24U Adj. Setpoint, 4–100A, Top Term,, LED, 24VDC Pwr SPDT Relay, 5A@240VAC
Add part number DS3-NOU-24U to your Quote. DS3-NOU-24U Adj. Setpoint, 4–100A, Top Term., LED, 24VDC Pwr N.O., 0.2A@240VAC/VDC
Add part number DS3-SDT-12U to your Quote. DS3-SDT-12U Adj. Setpoint, 4–100A, Top Term., LED, 12VDC Pwr SPDT Relay, 5A@240VAC
Add part number DS3-NOU-12U to your Quote. DS3-NOU-12U Adj. Setpoint, 4–100A, Top Term., LED, 12VDC Pwr N.O., 0.2A@240VAC/VDC