The most rugged switches in the world for high voltage applications

No matter how intense your specifications, HSI’s comprehensive line of high-voltage reed switches are engineered for the unique demands of fluid processing, reed relays, and other voltage-intensive applications including. Pair them with a custom housing for a solution that’s tailor-engineered and guaranteed for millions of cycles.

Our line of high voltage switches can be delivered in as little as three weeks

High Voltage Checkboxes
  • Consistent, reliable operation rated for millions of cycles
  • Hermetically-sealed tungsten contacts engineered for extended life in extreme environments
  • Outside lab certification available upon request
  • The sensitivity, footprint, and housing of anyswitch can be customized for your application


  • Industrial/Chemical Plant Valve
  • Position Signaling
  • Hazardous Chemical Level Detection
  • Liquid Level Signals
  • High Voltage Relays
  • Medical Test Equipment
  • Defibrillators
  • Power Grid Applications

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From 'Making Sense' Blog

How Can I Increase Value?

We commonly have potential customers send us spec sheets for products asking, “Can you make this, and can I get a quote?” Our immediate response is typically, “Yes, and yes. What I really want to know is why. Why did the potential customer just ask that question?