NonOEM pressure switch comparable to part number 56288764, compatible with VHP40RM style units. NEMA 1 enclosure. Universal replacement for many air compressor models and older style switches. Key benefits Restores automatic pressure control so compressors start and stop at the correct pressures. Adjustable factory settings let you tune cutin and cutout to match your compressor and tank requirements. Integrated adjustable unloader valve removes trapped air for easier restarts and reduced load on the motor. Sidemounted electrical inlets simplify wiring when bottom access is restricted. Compact 1/4 inch fittings make installation straightforward on standard compressor ports. Features and specifications Factory set cutin: approximately 140 to 145 psi; cutout: 175 psi. Settings are adjustable. Differential: adjustable in the 30 to 40 psi range. Air inlet connection: 1/4 inch female NPT (FPT). Unloader valve: 1/4 inch compression fitting, adjustable. On/off lever for manual control. Electrical inlets located on each side of the switch; no bottom electrical inlets. NEMA 1 enclosure. This is a universal, nonOEM part intended to the old style switch. It is not an exact factory OEM replacement but is compatible with many brands and models that use part number 56288764 and VHP40RM style switches. Typical applications Replacing a failed pressure switch on a compressor to restore automatic operation. Upgrading an older compressor with a serviceable unloader valve for easier restarts and reduced motor strain. Field or maintenance work where sidemounted electrical inlets improve access and wiring convenience. Installation notes Confirm compatibility with your compressor by checking part number 56288764 or VHP40RM style before ordering. Turn off power and bleed air from the tank before servicing. Use appropriate pipe thread sealant on the 1/4 inch female NPT connection. Adjust cutin and differential slowly while monitoring tank pressure to achieve desired operation. This pressure switch provides an adjustable, practical replacement solution for many air compressors needing reliable pressure control, an onboard unloader, and side wiring access.