Pressure Switch, Diaphrgm, 3/8"FNPS, Stndrd Price For: Each HP @ 3 Phase - 240V: 5 HP @ 3 Phase - 480V: 5 Pressure Switch Electrical Contact Form: DPST Pressure Switch Application: Air Compressor and Water Pump NEMA Rating: 1 Pressure Switch Action: Standard Item: Pressure Switch HP @ 1 Phase - 240V: 3 Pressure Switch Unloader: No Pressure Switch Factory On/Off Setting: 145/175 psi Pressure Switch Port Type: (1) Port, 3/8" FNPS Pressure Switch Range: 32 to 250 psi Pressure Switch Differential: 24 to 45 psi Country of Origin (subject to change): Mexico