Rheem-Ruud 47-101529-03 Low Pressure Limit Switch W/Auto Reset

The Rheem-Ruud 47-101529-03 Low Pressure Limit Switch is a safety item used to control the pressure in HVAC systems. This switch has an auto reset provision and has been designed for low pressure range, 15 PSIG pressure to be precise. It has a switch terminal (SWT) of 5/16,” and, more to the point, it is size compatible, making it easy to install in many different HVAC systems. Such design in this low pressure limit switch cause it to work by first keeping track of the pressure the system is under. If the pressure decreases and goes down to 15 PSIG, the switch turns on to stop the electrical circuit and therefore, safely avoid unsafe working conditions for the system.