Allen-Bradley 1734-MB Mounting Base For Point I

Allen-Bradley 1734-MB Point I/O Mounting Base is the DIN-rail foundation for POINT I/O modules, providing the mechanical support and electrical interconnect for the POINTBus backplane and field power distribution. Used as the base in a POINT I/O wiring base assembly, it pairs with a removable terminal block (RTB or RTBS) to form a complete base that houses the I/O wiring and enables module insertion into the backplane. The mounting base is designed to mount directly on a standard DIN rail (EN50022), typically on rails such as 199-DR1, ensuring secure retention and proper alignment with adjacent modules. In typical installations, the 1734-MB is combined with an 1734-RTB or 1734-RTBS to create the wiring base assembly, featuring interlocking side pieces, a slide-in label, and mechanical keying to prevent incorrect mating. This base is part of the POINT I/O architecture used in industrial automation networks, enabling distributed I/O with reliable backplane communication via POINTBus and coordinated field-power distribution. Variants such as 1734-MB/A exist, representing minor revisions within the same mounting-base family. The 1734-MB is intended for use with POINT I/O modules that slide into the RTB portion, forming a scalable, DIN-rail-mounted foundation for configuring and wiring POINT I/O digital and analog channels.