Device carrier for 4 Rastec 45 devices or 3 support bars made of PA for VQ12VR12/VR10(middle). Device cup according to DIN EN 50085-2-2 for supply units for installation of system devices without additional cover plates or 60 mm support bar devices, partition wall, delivery condition upper and lower sections separated for visual inspection of the wiring status, double locking of the locking slides.