Klixon 29PS Series

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Site Updated February 16, 2018

* * * Sensata > Products > Klixon Brand > Switches > For HVAC/R + Industrial >

Klixon® 29PS series for HVAC/R, commercial, and industrial uses
-20°F to 150°F, manual reset pressure switch

Features and Overview Product Uses
Performance Characteristics  
Data Sheet (PDF) » Contacts and distributors »
Installation Recommendations (PDF) »  

Features and Overview /\ Top

Trip–free manual reset
Maintenance–free design
Single–pole, single–throw, normally closed contacts
Factory calibrated pressure set points
Hermetically sealed sensor
Typical use: click here
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The 29PS utilizes a snap–acting stainless steel Klixon disc that reverses its curvature when pressurized above a customer specified actuation pressure. When the disc snaps it opens a set of electrical contacts by means of a transfer pin. Resetting of the switch must be accomplished manually by pressing the integrated reset button.

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

The welded, hermetic sensor of the 29PS provides increased reliability and maintenance–free operation for the lifetime of the switch. The actuation and release pressures of the disc are factory calibrated, simplifying installation and helping make the 29PS tamper resistant. The epoxy potting and rubber boot provide an environmental seal for the switch mechanism, protecting it from dust, oil and moisture.

The 29PS is a derivative of the Klixon 20PS pressure switch, long recognized as an industry standard control device.

Product Uses /\ Top

Upper limit control on unitary and central air conditioning systems, heat pumps, roof top units, and refrigeration systems

Performance Characteristics /\ Top
Ambient Temperature
-20°F to 150°F (-29°C - 66°C)
Fluid Temperature
-65°F to 275°F (-54°C - 135°C)
Operating Pressure
200 to 750 psig
Burst Pressure
5,000 psig (345 bar)
Life at Rated Current
10,000 cycles
Electrical Ratings
5.8 RLA, 34.8 LRA @ 120 Vac
2.9 RLA, 15.0 LRA @ 240 Vac
375 VA @ 120 Vac pilot duty
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