T type four position switches voltage class:10kV, CEE FKY1-12/630-T ;I type four position switches 20kV, CEE BFY312-20/630-20

Four position switch is used in underground residential applications with loop feed, and in three-phase commercial industrial installations wherethe ability to use an alternative source of power is necessary. They can also be used to switch on and off  a primary cable tap on a transformer.