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181P NEMA 4X, 7, 9 & 13 Adjustable Hazardous Vacuum Switch

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Product Description

Compact, adjustable hazardous vacuum switch well suited to numerous applications. Our efficient Nega-Rate® Belleville disc spring offers superior set point stability and vibration resistance. The 181P series vacuum switch also has a selectable deadband feature which can be preset.

Datasheets
Specifications
  • Electrical Listings: Snap action electrical switch assembly listed by Underwriters Laboratories, Inc., FM Approval and CSA International
  • Electrical Connection: 1/2 NPT male conduit connection with PVS insulated 18 AWG, 18" long leads
  • Pressure Connection: 1/4 NPT Female and 1/2 NPT Male
  • Temperature Range:*
    • Ambient: -40°F to +176°F (-40°C to +80°C)
    • Media: -40°F to +300°F (-40°C to +149°C)
  • Adjustment: Internal, slotted adjustment wheel
  • Shipping Weight: Approximately 20 ounces

* Temperature limits change with O-Ring selection. See Electrical Assembly specification sheet for Temperature Class Ratings.

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Reliability and Accuracy Brochure

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