Square D,PRESSURE SWITCH 575VAC 5HP G +OPTIONS,0.25 inch male pipe thread on pressure connection conforming to UL 508,130...175 psi,250 psi (30...190 psi),40...60 psi,80...250 psi,2-way pressure release valve,30 to 190 PSIG,DPST,NEMA 4,Pressure Switch,Pumptrol,Screw Clamp,UL listed, CSA,Water tight and Dust tight (Indoor/Outdoor),air (-22...257 .F)-fresh water (-22...257 .F),control electrically driven water pumps and air compressors