Description
The Siemens Combustion QPH31.050M00 M/R High Pressure Switch is a pressure monitoring component with an adjustable operating range of 2 to 20″ of water column, designed for gas and air pressure control in HVAC systems and combustion equipment. It blocks the electrical control circuit when pressure exceeds the preset limit and requires a manual reset before operation can resume. Commonly installed in commercial and industrial burners, boilers and air-handling applications, this switch work as a protective control component, maintaining safe operating conditions and supporting accurate system performance.
