Allen-Bradley 1734-MB I Module Terminal Base

The Allen-Bradley 1734-MB POINT I/O Mounting Base is the DIN-rail foundation for POINT I/O modules, providing a secure backplane interface and field-power distribution for modular I/O deployments. It ships with a removable terminal block (RTB) that simplifies wiring and supports standard 1734 I/O modules, making it a versatile base for input and other I/O configurations within the POINT I/O family. The base incorporates mechanical keying to prevent incorrect module placement and a locking mechanism to ensure a stable interlock with adjacent bases on the DIN rail. Installation notes describe mounting the base on EN50022-compatible DIN rails using common hardware (for example, the orange DIN rail locking screw and related accessories), and pairing the MB with RTB components such as 1734-RTB or 1734-RTBS for wiring continuity. Variants like 1734-MB/A maintain POINTBus backplane communication while enabling field-power distribution to connected modules, supporting scalable expansion of a POINT I/O network. Designed to accept standard 1734 I/O modules, the 1734-MB delivers a compact, robust platform that facilitates straightforward module insertion and removal, aiding maintenance and future upgrades in industrial control cabinets.