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1756-A4 – ControlLogix 4 Slots Chassis — 4 Slot ControlLogix Chassis
1756-A4 is an Allen-Bradley ControlLogix 1756 I/O, power supplies, chassis catalog number. The ratings and the lifecycle status below are as shown on its Rockwell product page, read on 3 November 2026. TDL quotes it as a spare or for a project, and can carry out the installation, configuration and testing on site.
| Catalog number | 1756-A4 |
|---|---|
| Rockwell description | ControlLogix 4 Slots Chassis — 4 Slot ControlLogix Chassis |
| Type | Chassis |
| Points | 4 slots |
| Rockwell lifecycle status | Active — sold and supported (read on 3 November 2026) |
| Product family | ControlLogix 1756 I/O, communication modules, power supplies and chassis |
Lifecycle status changes over time: confirm the current status on the Rockwell product page or in the Product Compatibility and Download Center before ordering.
About this product family
- ControlLogix 1756 I/O modules, communication modules and power supplies install in 1756 chassis offered in 4, 7, 10, 13 and 17 slot sizes.
- ControlLogix power supplies are offered for 85-265 V AC input (1756-PA50, PA72, PA75) and 19-32 V DC input (1756-PB72, PB75); redundant assemblies 1756-PAR2/PBR2 use the 1756-PSCA2 chassis adapter.
Other catalog numbers in this family
1756-PA72 1756-PB72 1756-PA50 1756-PAR2 1756-PBR2 1756-PSCA2 1756-A7 1756-A10 1756-A13 1756-A17 1756-EN2TXT 1756-EN2TRXT
All 55 catalog numbers in the family table Current replacement parts ControlLogix in TDL Projects
Related services: Lifecycle review and spare parts Rockwell Automation upgrades
Sources
- Rockwell Automation, Rockwell product page 1756-A4 — read on 3 November 2026
- Product pages details.1756-A4/A7/A10/A13/A17.html, read 2026-11-03
- Product pages details.1756-PA50/PA72/PA75/PB72/PB75/PAR2/PBR2/PSCA2.html, read 2026-11-03