The overload protected AC motor with frequency 50Hz, voltage up to 660V, current up to 105A. Several functions provided by these JRS5 thermal relay is suitable for overload protection of AC motor operated on 8-houres dutyor uninterupted duty. The overload protected AC motor with frequency 50Hz, voltage up to660V, current up to 105A. Several functions provided by these relays are: phase-failure ...