The MiniCAS 24 volt relay can be ordered separately for installation in a control panel by a UL or CSA certified panel shop or as a built-in option in our control panel. Wastewater 1-1/2″ and 2″ Discharge Submersible Grinder Pumps 1GA (X) & 2GA (X) Applications. High head and pressure sewage systems for: Municipal, Commercial, and Industrial.