Allen-Bradley 1734-MB Module Base For Point I

Allen-Bradley 1734-MB is the POINT I/O mounting base that snaps onto a DIN rail to provide the mechanical foundation and electrical interconnect for a single POINT I/O module in a distributed I/O system. It forms the interconnect for the POINTBus backplane and supports field-power distribution to the attached module. The base is designed to be used with a removable terminal block (RTB) to complete the wiring; common two-piece configurations pair the 1734-MB with 1734-RTB variants, with screw-clamp terminations (1734-RTB3) or spring-clamp terminations (1734-RTB3S) depending on the RTB chosen. A keyswitch mechanism helps ensure correct module placement on the base, preventing incorrect installation. The assembly is intended for DIN-rail mounting using standard rails and is part of the POINT I/O installation family that emphasizes secure alignment, straightforward wiring, and reliable backplane communication for modular I/O. In practice, the complete wiring base assembly comprises the 1734-MB mounting base plus its RTB component, with the specific RTB variant selected to match the termination style and wiring needs of the I/O module being used.