It describes HA, HK, and LGD series boxes with dimensions ranging from 100-415mm in length, 105-323mm in width, and 75-140mm in height. Wiring diagram shows both PNP and NPN wiring. Dimensions are shown in mm (in. 81 ft)]. The picture shows a lot of outboard gear built into the cabinets, which completely follows the 19-inch rack standard. A 19-inch rack is a standardized frame or enclosure for mounting multiple electronic equipment modules. The 19 inch. ABB Mini Center Compact distribution board is the basis for development and growth in meeting all the demands for a successful future in residential, commercial, and infrastructure segments. These Distribution Cabinets are to be outdoor type nd to be fabricated out of 2 mm GI sheet steel. Please review our Customer Terms and Conditions on www.