Allen-Bradley 1769-CRR3 CompactLogix Expansion Cable

Description

The Allen-Bradley 1769-CRR3 is a bus expansion cable accessory for the Allen-Bradley CompactLogix series, with a commonly referenced variant model 1769-CRL3. Designed with a Right to Right bus expansion structure, this cable enables physical connections between CompactLogix controllers and I/O modules, supporting both horizontal and vertical module expansion in tight, compact spaces. It has a fixed length of 1 meter (marked as “CMPLX 1 m”), making it suitable for medium-distance module extension requirements within industrial control setups. As a standard CompactLogix series accessory, it offers broad compatibility, working seamlessly with 1769 series I/O modules, communication modules, and controllers such as the 1769-L35E. Key applications include optimizing industrial control cabinet space layouts, supporting distributed I/O configurations, and accommodating installation environments where modules need to be arranged in linear formations. This cable serves as a critical passive connection component for expanding CompactLogix PLC systems, helping users build larger, more flexible control architectures without sacrificing space efficiency.