Pressure Switch Water Pump Manual Switch Action Auto/Off/Start (1) Port 1/4 in FNPS Pressure Switch Factory On/Off Setting 30/50 psi No Pressure Switch Unloader Pressure Switch Differential 20 to 30 psi Pressure Switch Range 5 to 80 psi Pressure Switch Electrical Contact Form DPST Pressure Switch Action Standard NEMA Rating 1 Series 9013FYG HP @ 1 Phase - 120V 2 hp HP @ 1 Phase - 240V 3 hp HP @ 3 Phase - 240V 5 hp HP @ 3 Phase - 480V 1 hp Temp Range -22 Degrees to 257 Degrees F