The Allen-Bradley 1771-PA mounts in the leftmost slot of a 1771 I/O chassis to supply regulated power to PLC-5 systems. It accepts 120-220 VAC input and provides 5.2 VDC output at 6.5 A for the backplane and installed modules. This unit connects directly to the chassis power bus and supports standard 1771-series configurations without extra wiring or external transformers.
