VE5-2 is a mechanical and electrical interlock unit used for the mechanical and electrical interlocking of two contactor of the A contactor serie, in the case, e.g. of reversing contactors, changeover contactors or star-delta starters. VE5-2 includes 2 built-in N.C. interlocking contacts allowing to create the electrical interlocking with wiring to the respective contactor's coils. VE5-1 is available in multiple pack.