182P NEMA 4 & 13 Vacuum Switch / Tamper Resistant

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Compact, versatile vacuum switch suited to numerous applications. Features efficient Nega-Rate® Belleville disc spring for stable set points and is field adjustable through the pressure port. Once adjustments are made and switch is installed, it becomes tamper proof.


  • Electrical: Snap action electrical switch recognized by Underwriters’ Laboratories, Inc. and CSA International
  • Electrical Connection: 1/2 NPT male conduit connection with PVC insulated 18 AWG, 18" long leads
  • Pressure Connection: 1/4 NPT Male
  • Temperature Range*
    • Ambient: -40°F to +180°F (-40°C to +82°C)
    • Media: -40°F to +300°F (-40°C to +149°C)
  • Adjustment: 1/8" allen wrench through port
  • Shipping Weight: Approximately 8 ounces

  • *Temperature limits change with O-Ring selection