What high-side pressure causes the high pressure cutout switch to disengage the compressor clutch?

The high-side pressure that causes the high-pressure cutout switch to disengage the compressor clutch is typically set within the range of 350 to 400 psi. This range is crucial as it ensures that the system does not operate under conditions that could lead to excessive pressure, potentially causing damage or failure of components within the air conditioning system. The cutout switch serves as a safety mechanism, protecting the compressor and other system components by preventing operation when the pressure reaches levels that could be harmful.

The thresholds for pressure cutouts are predetermined based on the design specifications of the compressor and the overall system requirements, which allow for efficient and safe operation. The selection of 350 to 400 psi reflects a balance between keeping the system functioning effectively while maintaining safety standards.

Other ranges provided in the choices may not align with standard operational parameters for most A/C systems. Lower ranges might not adequately protect the system from damage at high operating pressures, while higher ranges could promote conditions that risk compressor failure or system integrity.