Pressure Switch Water Pump Manual Switch Action Auto/Off/Reset (1) Port 1/4 in FNPT Pressure Switch Factory On/Off Setting 20/40 psi No Pressure Switch Unloader Pressure Switch Differential 15 to 50 psi Pressure Switch Range 10 to 100 psi Pressure Switch Electrical Contact Form DPST Pressure Switch Action Standard NEMA Rating 1 Series Dayton HP @ 1 Phase - 120V 1 1/2 hp HP @ 1 Phase - 240V 2 hp Temp Range -22 Degrees to 250 Degrees F Standards CSA Certified UL Listed