Supco SHP400280 High Pressure Switch 400 Open PSI (CUT-OUT) 280 Close PSI (CUT-IN)

The Supco SHP400280 High-Pressure Switch is a control component that is used in HVAC systems to check the pressure of refrigerant in air conditioning and heat pump systems. It is installed on the high-side refrigerant line, and it opens the control circuit when the pressure exceeds 400 PSI to prevent overloading of the compressor and other parts and closes when the pressure decreases to 280 PSI. Switch use in this application eliminates mechanical damage and unstable operating conditions through termination of the system.