Allen-Bradley 1746-A7 SLC 500 7-Slot PLC Rack Chassis

The Allen-Bradley 1746-A7 SLC 500 7-Slot PLC Rack is a seven-position modular backplane designed to host an SLC 500 processor along with I/O modules and communications adapters in a single chassis. It provides a dedicated backplane for AB’s SLC‑500 modular hardware, enabling compact, organized mounting of seven slots in a single enclosure. The backplane is specified to carry 5.1V DC at up to 10 A and 24V DC at up to 2.88 A, supporting power distribution to installed modules. Environmentally, the 1746-A7 is rated for operating temperatures from 0 to 60°C, with storage temperatures from -40 to 85°C and a maximum relative humidity of 95% RH. This chassis is intended for use in small to mid‑size automation projects that require a modular, scalable SLC‑500 rack to house processors, discrete I/O, and communication modules in a single, organized form factor.