UE H121 Pressure Switch

Part Number:
H121-452
Quantity Available:
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UE H121 Pressure Switch, 30" Hg Vac-20 psi setpoint range, one SPDT, 15A@125/250/480 VAC, 3/4" FNPT elect. conn., NEMA 4X, 7 & 9 encl., Buna N diaph. and o-ring, 1/4" FNPT alum. press. conn., external adjust. w/ref. dial

Front View of United Electric H121-452
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The UE 120 Series explosion-proof vacuum and pressure switches are approved for Class I and II, Div. 1 & 2 explosive and corrosive atmospheres. Available in a choice of sensors, ranges, switch configurations, process connections, and electrical ratings; the 120 Series is an ideal choice for the most demanding applications in chemicals, refining, oil and gas production, petrochemicals and pharmaceuticals.

  • Approved for explosive and corrosive atmospheres
  • Epoxy-coated 4X enclosure
  • Internal or external adjustment via calibrated dials
  • Welded diaphragm or bellows sensor
  • Adjustable pressure ranges from vacuum to 6000 psi
  • SPDT or DPDT outputs

Detailed product dimension line drawing for United Electric UE H121 Pressure Switch.

Brand United Electric
Pressure Range 30" Hg Vac-20 psi
Select Measurement Type pressure
Setpoint Adjustment Type external adjustment with reference dial
Switch Type one SPDT
Wetted Materials Buna N and aluminum



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