CAMPBELL CW207530AV Pressure Switch

CAMPBELL CW207530AV is a mechanical pressure switch designed to automatically start and stop air compressor motors in response to line pressure. Specified for a 100–135 psi operating range, it provides a simple, electrically controlled means to regulate compressor cycling without electronic control loops. The device is rated for up to 26 amps at 120/240 VAC and configured as a 1-port switch, offering a single sensing/control port for straightforward integration into standard compressor circuits. In operation, the switch opens or closes the circuit as pressure rises to the upper setpoint or falls below the lower setpoint, respectively, helping maintain target pressure and protecting the system from under- or over-pressurization. This model is referenced in catalogs as a legacy CAMPBELL pressure switch and is documented in cross-reference literature as being replaced by newer models such as CW212600SJ in some listings, indicating broad compatibility within the CW family of air‑compressor switches. Common applications include controlling small- to mid-sized air compressors in industrial or workshop environments where a reliable, mechanically actuated pressure switch is required in the 100–135 psi range and 120/240‑volt service.