Supply Of Push Button Operated Wall Mounted Type, Automatic Star Delta Starter With Short Circuit Protection For 50hp Motor, Relay Range 52-72a, Conforming To Is/iec 60947-4-1 Or Latest With An Adjustable Automatic Change Over Timing Relay For Opening The Star Contractor And Closing The Delta Contactor In A Pre-set Time. The Contactors And The Other Components Of The Starter Shall Be Mounted Inside The Panel..