The Synchronizing Module consists of three indicator lamps and a three-pole circuit breaker-switch fitted to the module faceplate. The main function of this module is to indicate synchronism between two ac generators and to electrically interconnect the generators by closing the three-phase breaker-switch. Each phase leg of this module is then protected from over-current conditions. This module is also used to determine the phase sequence of a three-phase circuit and to show the relative power level in ac and dc circuits. Connections are made through 4 mm color-coded jacks.