Campbell Hausfeld CW209400AV Pressure Switch

The Campbell Hausfeld CW209400AV is a four-port pressure switch designed for Campbell Hausfeld air compressors, serving as the automatic on/off controller that opens and closes electrical contacts in response to tank pressure to regulate run time. With a 100 psi cut-in (on) and a 125 psi cut-out (off), the switch starts the compressor when pressure falls to 100 psi and stops at 125 psi, providing a repeatable operating window that helps maintain system pressure and protect the pump from running under low-load conditions. Sold and used as CW209400AV, this component is commonly listed as a direct replacement part for compatible Campbell Hausfeld units, and retailers consistently identify it by the same model number in four-port form. The four-port design accommodates the standard connections found on many Campbell Hausfeld air systems, and its behavior aligns with Campbell Hausfeld documentation that describes a 125 psi shutoff and 100 psi restart range for automatic pressure control.