Description
The Carrier HK02SA449 High Pressure Switch is a pressure monitoring control component used to protect refrigeration and HVAC systems from excessive operating pressure conditions. This switch is installed within condensing units and compressor circuits where it monitors refrigerant pressure levels during system operation. The component is designed to open or close the electrical circuit when pressure reaches the specified threshold, helping control compressor activity and supporting safe equipment performance. It operates as part of the system protection assembly to assist with pressure regulation, operational monitoring, and continued performance during heating and cooling cycles.
