1734-MBA | Allen-Bradley | POINT I/O DIN Rail Base Assembly

Product Description

The Allen-Bradley 1734-MBA is a POINT I/O mounting base assembly from Rockwell Automation’s Bulletin 1734 family. It provides both mechanical and electrical interfaces for installing POINT I/O modules on a DIN rail while connecting them to the POINT I/O backplane.

Unlike functional I/O modules, the 1734-MBA does not provide input or output channels. Instead, it allows POINT I/O modules to be securely mounted, wired to field devices, and powered through the system bus. This base assembly is critical for building distributed POINT I/O systems, enabling compact and modular installations close to field devices, reducing wiring complexity, and supporting scalable automation architectures.

Technical Specifications

• Model / Part Number: 1734-MBA

• Brand: Allen-Bradley (Rockwell Automation)

• Product Line: POINT I/O (Bulletin 1734)

• Module Type: Mounting Base Assembly

• Function: Provides mechanical support and electrical backplane connection for POINT I/O modules

• Terminal Connections: Integrated removable terminal block for field wiring

• Wiring Capacity: 22–14 AWG solid or stranded copper wire

• DIN Rail Mounting: Standard 35 mm DIN rail

• Dimensions (HxWxD): 1.0 × 5.0 × 2.0 in (2.5 × 12.7 × 5.1 cm)

• Weight: 0.2kg 

• Operating Temperature: –20 °C to +55 °C

• Storage Temperature: –40 °C to +85 °C

• Humidity: 5–95% non-condensing

• Protection Rating: IP20 (cabinet installation required)

• Certifications: UL, CE, CSA

• Integration: Compatible with all POINT I/O modules, including digital, analog, specialty, and communication adapters