The Allen-Bradley 1746-P2 SLC 500 Power Supply Unit is a rack‑mount power module for the SLC 500 PLC family that provides dual DC rails for the backplane and field loads. It accepts 85–132/170–265 VAC, 47–63 Hz input and draws a typical 180 VA of line power with up to a 20 A inrush. It supplies 5 V DC at up to 5 A for logic and 24 V DC with a 0.96 A internal capacity and a 1 A user‑power rating on the 24 V rail, with 1800 V AC isolation for 1 s; fuse protection uses 1746‑F2 or equivalent and the fuse is soldered in place. Dimensionally it fits in the SLC 500 chassis at about 5.5 in x 2.9 in x 5.7 in and operates from 0°C to 60°C.
