Pressure Switch, Air Compressor and Water Pump, Manual Switch Action Auto/Off/On, (1) Port, 1/8 in FNPS, Pressure Switch Factory On/Off Setting 110/125 psi, No Pressure Switch Unloader, Pressure Switch Differential 20 to 40 psi, Pressure Switch Range 40 to 200 psi, Pressure Switch Electrical Contact Form DPST, Pressure Switch Action Standard, NEMA Rating 1, Series 9013GHG, HP @ 1 Phase - 120V 2 hp, HP @ 1 Phase - 240V 3 hp, HP @ 3 Phase - 240V 5 hp, HP @ 3 Phase - 480V 5 hp