Honeywell P658B1012 SPDT Pneumatic Electric Switch 10 PSI Setpoint P-E

The Honeywell P658B1012 is a pressure-operated switch developed for use in HVAC systems. With one input and two output terminals, this switch is a Single Pole, Double Throw switch, which means that pressure applied to one terminal will cause the other to open or close. It is configured to activate at 10 PSI, and it does so when pressure reaches that number. The inclusion of this switch is vital for numerous HVAC systems, including air handling units AHUs, fan coil units FCUs, and packaged terminal air conditioners PTACs. Based on changes in system pressure, it usually regulates operations such as fan rotation, compressor cycling, and alarm triggering. To avoid destruction, it may, for For instance, turn off the compressor if the pressure increases above a safe threshold.