Accessory Device insert for the operation of up to 3 ATLC/NG 670-0 or other Siedle system components in an IT security cabinet system (482.6 mm / 19') that meets the protection requirements in accordance with EN 62368-1. Space requirement (height): 133.35 mm / 5.25' / 3 height units (HE). Delivered pre-assembled and ready for use when equipped, including connected power cable. Scope of delivery. Pre-assembled device insert ZGE. unequipped