Pressure Switch

The Petross SHP425300 is an encapsulated High Pressure Safety Limit Control switch designed for HVAC/R systems, including residential, commercial, and light industrial air conditioners, heat pumps, and refrigeration units. This automatic reset switch installs directly onto a flare fitting on the high-pressure liquid or discharge line of the compressor circuit, with electrical leads wired into the system's control board or compressor contactor circuit. It acts as a high-pressure safety cutout, protecting the compressor from damage caused by excessive system pressure due to issues such as a failed condenser fan motor, dirty outdoor coil, airflow blockage, or system overcharge.

The Petross SHP610420 is an encapsulated High Pressure Cut-out/Safety Switch designed specifically for high-pressure refrigerants like R-410A. Due to its high 610 PSI cut-out threshold, this control is built for modern R-410A air conditioning systems, heat pumps, and high-pressure commercial refrigeration units. This automatic reset switch threads directly onto the high-pressure liquid line or compressor discharge line service valve, with wiring connected into the 24V control circuit or compressor contactor coil.