BKE-A, 3-phase, universZ, basic version, PU = 1 piece. Fastening and contacting device BKE-AZ, BKE-AZ1 or BKE-AZ3 with VDE symbol according to DIN V VDE V 0603-5 for holding the electronic household meter (eHZ) according to VDN specifications V 1.03, the contact protection cover for the terminal block area is sealed by the meter, with the option of expansion with top hat rails with 8 or 15 PLE to hold installation devices (max. width 10 PLE) according to DIN 43880 size 1 (series installation devices on top hat rail), without dismantling the eHZ, BKE rated connection capacity per main terminal point for copper conductors: 4- 25 mm², solid or finely stranded with wire end ferrule. BKE terminal board dimensions for connecting cables according to DIN 43857 T2, suitable for ZSK. Plug-in, additional terminal points that can be mounted under voltage for voltage tapping of unmetered and metered current on phase L2 and N, locking of the BKE in the non-bridged position possible with a plug lock, maximum dimensions in installation position with sealable contact protection cover and eHZ meter: width = 180 mm, height = 290 mm, installation depth = 115 mm (8 PLE) or width = 195 mm, height = 355 mm, installation depth = 130 mm (15 PLE). There are label fields on the contact protection cover and the BKE for the property number, meter point designation and meter reading information when the meter is changed.