Flasher Relay is used in railway signaling installations to give flashes at the rate of 40 to 60 per minute. Potential free contacts are given to bear a load from 3 t01 0 Amps in different models. It is so designed that the failure of any component results in no indication. Encased in a sheet metal box has also an over voltage protection. It is available in different models to work at 12 or 24 or 60V DC or 110V AC.