MPN: 1746-A7 — industrial control spare part, in stock at TGK Parts.
The 1746-A7 is the 7-slot modular chassis for the Allen-Bradley SLC 500 platform — the backbone rack that holds the CPU, power supply and I/O modules. SLC 500 systems remain installed in thousands of water/wastewater plants, packaging lines and legacy material-handling systems, and chassis damage (cracked backplane covers, bent pins, blown bus traces after lightning events) is one of the most common reasons a working SLC 500 rack gets scrapped.
As SLC 500 is long obsolete, this is a classic surplus-hunt item: we source clean used chassis with verified backplane continuity and tested power distribution.
| MPN | 1746-A7 |
|---|---|
| Type | Modular chassis / rack |
| Slots | 7 (incl. CPU and power supply slots) |
| System | SLC 500 (1746 I/O family) |
| Mounting | Panel or DIN rail |
| Condition | Tested used |
| Warranty | 12 months |
Replacement and spare part for industrial automation equipment — production lines, CNC machines, packaging machinery, textile machinery, printing equipment and more.
No — slot count and bus cable length differ. Match the chassis to your existing module count.
Yes — continuity across every backplane pin and slot-to-slot isolation is measured before shipping.
Minor pin damage is often repairable; send photos and we assess. Replacement is usually faster.