Description
The United Electric J400K-455 is a single-pole double-throw pressure differential switch, which means it has one electrical input and two outputs that respond to pressure variations. It is appropriate for a range of HVAC applications since it functions throughout a broad range of 5 to 80 inches of water column. The NEMA 4 housing shields the switch from moisture, dust, and corrosion, enabling secure operation under challenging conditions. The J400K-455 monitors water flow, airflow, and air pressure in HVAC systems. The switch controls the operation of fans, dampers, pumps, and other devices to maintain the required pressure levels when the pressure differential increases or decreases beyond the predetermined points.
