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Klixon® 20PS Series Pressure Switch for HVAC, Commercial, and Industrial Uses

-20°F to 150°F, Automatic Reset Pressure Switch

Features and Overview

  • Single pole, single throw switch normally open or closed contacts
  • Factory calibrated pressure setpoints from vacuum to 750 psig (52 Bar)
  • Snap-acting, stainless steel
  • Hermetically sealed sensor
  • Enviornmentally sealed or vented switch

This compact, rugged switch utilizes a snap-acting stainless steel diaphragm that reverses its curvature when pressurized to a customer-specified actuation pressure.  When the disc snaps, it opens or closes a set of electrical contacts by means of a transfer pin.  Resetting the switch occurs automatically when pressure drops below the release value.

The unique latching mechanism in the 29PS design assures safe electrical cutout even if the reset button is help fully depressed.  This trip-free design prevents the consumer from restarting the equipment until the line pressure has dropped below the release setpoint.

Product Uses

Appropriate for a wide variety of HVAC/R, commercial, and industrial applications including:

  • High and low limit safety controls on unitary and central air conditioning systems
  • Clutch disconnect and fan cycling switches for vehicle air conditioners
  • Hydraulic and oil sensors for constuction and agricultural vehicles

Performance Characteristics

  • Ambient Temperature: -20°F to 150°F (-28.9°C to 65.6°C)
  • Fluid Temperature: -65°F to 275°F (-53.9°C to 135°C)
  • Operating Pressure: Vacuum to 750 psig
  • Burst Pressure: 5,000 psig
  • Life at Rated Current: 100,000 cycles
  • Electrical Ratings:
    • 120 VAC – 5.8 FLA 34.8 LRA
    • 240 VAC – 2.9 FLA 15 LRA
    • 375 VA Pilot Duty

For Free, Fast HVAC pressure switch data sheets, please send an email to HVACPressureSwitch@dee-inc.com.  We Help OEMs (original equipment manufacturers) and CMs (contract manufacturers) Find Solutions and Exceed Their Goals.  DEE is a Trusted Supplier and Expert in providing Cost Savings, Fast Multiple Solution Options, Supplier Reduction, and Time Savings.


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