Johnson Controls P170AA-400 SPST High-Pressure Cut-Out Control 1/4" Flow Switch Open-Low 100/470PSI

The Johnson Controls P170AA-400 is a high-pressure cut-out control that is used to protect the HVAC systems from any high pressure that may be fatal to the system by constantly checking on the pressure and switching off the system if the pressure is high. This switch is an SPST switch with an open-low setting; it opens and breaks the circuit the moment the pressure is lower than the set limit. The maximum pressure of this switch is 100 to 470 PSI and it can be used for protection of the compressor and other parts used in commercial refrigeration and air conditioning appliances that use non-corrosive refrigerants. It directly connects to the system refrigerant line using a 1/4” male flare nut fitting.