117 Series

Class 1 Division 2 safety switch for vacuum, pressure, differential pressure, and temperature applications

The 117 Series is approved as a Class 1 Division 2 safety switch (Zone 2) for hazardous atmospheres. It has optional Zone 0 intrinsic safety compliance and can be used to measure vacuum, pressure, differential pressure, or temperature in a variety of applications. The rugged, one-piece enclosure features a slanted cover for wiring accessibility to the enclosed terminal block that is wired to either a SPDT or DPDT hermetically sealed microswitch. The 117 Series Class 1 Division 2 safety switch has welded, stainless steel pressure connections and sensors to provide superior corrosion resistance – NACE compliant – and fire-safe protection within the harshest environments.


The 117 Series Class 1 Division 2 safety switch comes in vacuum, differential pressure, and temperature models. It is an ideal choice for the most demanding applications; typically steel and aluminum mills, chemical and petrochemical plants, pulp and paper mills, wastewater treatment plants, midstream and downstream oil and gas, and pharmaceutical plants.

  • Compact design
  • Division 2, Enclosure Type 4X
  • SPDT or DPDT hermetic switch output
  • Terminal block wiring
  • Adjustable ranges:
    • Pressure and vacuum: 30 “Hg Vac to 3500 psi
      -1 bar to 241 bar
    • Temperature: -120° F to 650° F
      -85° C to 340° C
    • Differential Pressure: 0.8-inch wcd to 500 psid
      2 mbar to 34.5 bar
  • Approvals: UL, CSA, CE, NACE


Visit our Certifications Page for all 117 series Certifications

  • Epoxy coated Type 4X enclosure and stainless-steel component parts
  • Hermetically sealed snap switch, SPDT or DPDT output
  • Terminal block wiring
  • Tamper-resistant setpoint “lock”
  • Adjustable ranges:
    • Pressure: 30 “Hg Vac to 3500 psi (-1 to 241,3 bar)
    • “wc Ranges: 300 “wc vacuum to 250 “wc pressure
      (-746,7 to 622,3 mbar)
    • Differential Pressure: 0.8 “wcd to 500 psid (2,0 mbar to 34,5 bar)
    • Temperature: -120° F to 640°F (-84.4° C to 337.8° C)

Installations Manuals

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