Allen-Bradley 1746-P4 Industrial Power Supply

The Allen-Bradley 1746-P4 SLC 500 power supply is a rack-mount module that powers the SLC 500 backplane and its I/O within a 1746-series chassis. It accepts 120/240 VAC input (50/60 Hz) and delivers dual DC rails: a 5 V DC output rated to 10 A for the backplane and a 24 V DC output rated to 2.88 A for local I/O modules, with an overall input power around 92 W. The unit's physical size is approximately 5.5 in wide, 4.3 in deep, and 5.7 in tall, and it weighs about 2.5 lb, designed for operation from 0 to 60 C. This power supply is used in standard SLC 500 rack configurations to provide reliable, centralized power for both the system backplane and accessory modules, helping ensure stable performance for CPUs, digital I/O modules, and other devices in the 1746 chassis. It is a foundational part of the SLC 500 power architecture, supporting the common 5 V and 24 V rails required by the family’s I/O and logic components.