Cleveland Controls NS2-0461-00 Pressure Switch

The Cleveland Controls NS2-0461-00 Differential air pressure switch is applied in HVAC systems to control airflow or pressure variations. This switch is operated by pressure differences. When the pressure difference between the sensing points is at a certain setpoint, the switch opens or closes an electrical contact indicating a change in the system. This action can be used to demonstrate airflow in ductwork and allow or disable equipment such as unit heaters, furnaces, or air handlers depending on airflow. The advantages include avoiding operation of the HVAC equipment without proper airflow since this can make the equipment overheat or develop other problems.