A protective feed through terminal block is an electrical conductor for the purpose of safety and is used in many applications. To establish the electrical and mechanical connection between copper conductors and the mounting support plate, PE terminal blocks are used.They have one or more contact points for connection with and/or bifurcation of protective earth conductors.. Weidmuller WDK 2.5 PE is PE terminal, double-tier terminal, screw connection, 2.5 mm², 300 A (2.5 mm²), green/yellow, order no.is 1036300000.