For technicians servicing systems with non-corrosive refrigerants like R-404A or R-507

Manual switches require a physical button press to restore furnace operation after a trip

With an opening point range of 70 to 170 PSI

It utilizes a 1/4" NPT bottom mount connection

Common Questions Is the KIT6839 a direct replacement for the KIT06839

York S1-025-50188-000 Pressure Switch 328140-751 For technicians servicing systems withThe York S1 025 50188 000 is an OEM high pressure switch engineered for critical system protection in residential and commercial HVAC equipment. Traditionally found in R 410A systems, this normally closed switch monitors head pressure to prevent compressor damage and mechanical failure. It features a factory calibrated 650 PSI cut out threshold, which opens the electrical circuit when internal pressures exceed safe limits, and a 450 PSI cut in reset