A pressure-sensitive electrical control component designed to activate or deactivate an air compressor’s motor when the internal tank pressure reaches a specific threshold in this case, 150 pounds per square inch (psi). Once the pressure within the air compressor’s tank achieves 150 psi, the switch opens, interrupting the electrical circuit and stopping the motor. As air is consumed and the pressure drops, the switch closes at a predetermined lower pressure (typically around 120 psi), re-engaging the motor to refill the tank.
This type of device is a fundamental safety and operational element in air compressor systems. Its primary benefit is maintaining consistent air pressure within the desired range, preventing over-pressurization and ensuring efficient operation. Historically, mechanical pressure regulators were common, but modern systems increasingly rely on these electrical switches for improved precision and reliability. Proper functioning of this control mechanism is critical for the longevity of the compressor motor and the safety of the user.
