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Weschler Instruments is a manufacturer and distributor of electrical and electronic measurement equipment. Customers worldwide use our products in power plants, steel mills, chemical plants, paper mills and other industrial applications that require rugged, reliable and accurate instrumentation.
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NK Technologies DC Current Switches

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NK Technologies DC Current Switches - DS1 series

The DS1 Series Current Sensing Switches are designed to trip a solid-state contact when there is DC current through the sensor window.

  • Compact, one-piece design:  Fits in easily amongst motor starters and power supplies in crowded control panels
  •  Input Isolation: Safer than shunt/relay combinations
  •  Unique power supply connection:  Sensor power and switched load share a common point making installation easy
  • Built-in mounting feet: Simple, two-screw installation allows for secure mounting


NK Technologies DC Current Switches - DS3 series


DS3 Series Current Sensing 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 400 Hz. Available in a solid-core case with choice of relay or a universal solid-state output.
• DC & AC sensing
• Relay or solid-state output
• AC or DC powered
• 3 kV isolation
• Solid core
• 5 year warranty