thermal overload relay 1.contact with GMC-50,60,75,85 2.Direct mounting structure 3.safety cover and easy operation 4.CCC CE GTH-85 thermal overload relay Application: GTH series thermal relay is suitable for the power system of AC 50Hz, main circuit rated voltage up to 660V, current up to 630A, used as protecting AC three-phase motor against overload and phase losing, and forming electric- ...