Allen-Bradley 1746-P3 SLC 500 PLC Processor Module

The Allen-Bradley 1746-P3 is a DC power supply module for the SLC 500 modular PLC family, designed to power the backplane and all connected I/O and processor modules. It provides 24 VDC output at up to 3.6 A, delivering stable, regulated power to the 1746 backplane in a rack-mount SLC 500 system. Commonly used in conjunction with a 1746-A10 10-slot chassis for compact SLC 500 installations, it supports standard SLC 500 I/O and processor configurations. For proper operation, the 1746-P3 is typically used with the recommended 1746-F3 fuse, ensuring circuit protection within the rack power distribution. This power supply is a core component of the SLC 500 family, suitable for small automation tasks such as discrete I/O control and process monitoring where a reliable 24 VDC backplane supply is required.