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.