York S1-024-35265-000 Pressure Switch SPNO 0.55" WC Open / 1.2" WC Close, Close on Fall

The York S1-024-35265-000 is a pressure switch that is applied in the control and measuring of airflow in HVAC systems. It works on the pressure differential principle can measure changes in static pressure in a range of 0.55 to 1.2" of water column. In its design, it has a Single Pole, Normally Open where the electrical circuit remains open until the required pressure is achieved and closes to turn on the related elements. The label “Close On Fall’ means that the switch is closed when the observed pressure decreases. This pressure switch can be mostly used in HVAC systems and can be applied to different components such as blower motors, fan coils, air handlers, etc.