Allen-Bradley 1746-A4 SLC 500 4-Slot Modular Chassis

The Allen-Bradley 1746-A4 SLC 500 4-Slot Modular Chassis provides a compact and reliable foundation for SLC 500 control systems. It accommodates four SLC 500 modules and provides the required backplane connection between the installed processor, communication, and I/O modules.

For applications requiring additional I/O capacity, the 1746-A4 can be connected with other SLC 500 modular chassis using compatible chassis interconnect cables. Rockwell Automation specifies that up to three chassis can be connected in one configuration, supporting up to 30 I/O slots.

The 1746-A4 is particularly useful for SLC 500 system maintenance, replacement, expansion, and spare-parts requirements. It is a practical choice for plants maintaining existing Allen-Bradley SLC 500 installations where a compatible replacement chassis is required.