Campbell Hausfeld CW209300AJ Pressure Switch

Campbell Hausfeld CW209300AJ is a pressure switch designed as a direct replacement for Campbell Hausfeld air compressors. It is rated for a 105–135 psi operating range and features a 90-degree unloader configuration, which helps vent residual pressure from the pump head when the motor stops. The CW209300AJ is documented in Campbell Hausfeld manuals as a pressure-switch component and is commonly referenced in retailer listings as the 105–135 psi, 90-degree unloader model. In current product documentation, CW209300AV is shown as the replacement for CW209300AJ, indicating interchangeability between the AJ and AV variants for compatible units. This switch provides the electrical contacts that start and stop the compressor motor in response to tank pressure, ensuring automatic cycling between the set pressures. It is intended for use with Campbell Hausfeld pumps and control systems that require the CW209300AJ/AV configuration, restoring standard shutoff and unloading behavior on affected units.