A pressure switch is a mechanical or electromechanical control device used to monitor and regulate the pressure of fluids or gases in industrial systems. It typically includes an internal pressure sensor and a switching mechanism that activates or deactivates an electrical contact when the pressure reaches a preset value. Its operating range can vary from a few pascals to several megapascals depending on the model. Contact ratings usually range from 5 to 20 amperes at 250 volts AC or 30 volts DC. The pressure switch housing is often made from corrosion-resistant materials to ensure durability in harsh environments.
These devices are applicable across various industries, including heating systems, HVAC, air compressors, industrial pumps, and gas pipelines. Pressure cut-in and cut-out points are usually adjustable via an internal screw or diaphragm. Some models feature low hysteresis and high repeatability for precise operation. Pressure switches often have protection ratings from IP54 to IP65, providing resistance against dust and moisture ingress. These features enhance safety and reduce equipment wear, extending the system’s operational lifespan.
