Time relays TRE 701 to TRE 706 are suitable for many different applications. They can be one-function or multifunction and cover from simple to sophisticated time functions.They can be delivered in many varieties according to operating voltages and number of output contacts. Among them are also star-delta switch, bistable time relay and staircase switch.
TRE 704 is star-delta switch
TRE 705 is bistable time relay with hold-on after power off
TRE 706 staircase switch