B&R Industrial Automation GmbH X20BB82 Bus Base

The B&R X20BB82 Bus Base is a rugged X20 backplane module that provides two expansion slots for attaching X20 add‑on modules (such as IF interfaces or HB hubs) within the X20 system, and it supports both horizontal and vertical mounting in a cabinet. It is designed for use with X20 base modules (BC, HB, etc.) and the X20 power supply module, and ships with end cover plates for left and right sides. Key specs include a nominal 24 V DC supply, a low power draw of about 0.7 W, IP20 protection, and a maximum permissible contact load of 10 A for connected devices. Operating temperature depends on mounting orientation—horizontal from -25 to 60°C and vertical from -25 to 50°C—with an altitude range of 0 to 2000 m and storage conditions from -40 to 85°C.