Schneider Electric's Square D 155-175 Pressure Switch with Unloader is an electromechanical control device that starts and stops a pump or compressor based on pressure, featuring an integrated unloader valve. It is rated for 24 amps and accepts 1/4" NPT fittings for piping. The setpoints are labeled 155 ON and 175 OFF, providing a defined cycling band for reliable operation in pneumatic or hydraulic systems.
