Equipotential bonding box insert, color: pearl white according to DIN 42801, with contact pins, suitable for connection up to 4x2.5 mm and 1x6 mm, with central plate, for built-in boxes with screw fastening. Earthing contact sockets 16 A 250V ACSockets with plug-in terminals can be retrofitted with an overvoltage protection module as fine device protection. for flush mounting, protection class IP 20 screw terminals clamping range for copper conductors 1.5 mm and 2.5 mm, for the secure connection of aluminum conductors 2.5 mm without pre-treatment