Allen-Bradley 1746-P2 SLC 500 Power Supply Unit

The Allen-Bradley 1746-P2 SLC 500 Power Supply Unit is a rack-mount AC-to-DC power supply for the SLC 500 modular chassis that accepts 120/240 VAC input and delivers a regulated 18–30 VDC to the backplane and I/O modules. It provides backplane rails with 5 V and 24 V references (5 V up to 5 A; 24 V up to 0.96 A) to support typical SLC 500 configurations, and is rated for about 70 W input power with a line frequency range of 47–63 Hz. The enclosure measures roughly 5.5 inches wide, 2.9 inches high, and 5.7 inches deep, and it operates from 0 to 60 C (–40 to 85 C storage) with a humidity tolerance of 5–95% RH non-condensing. Certified as UL-listed, CSA-certified, and CE-compliant, this power supply is designed to power the SLC 500 backplane and connected I/O modules in standard 4- to 6-slot chassis setups, providing a compact, reliable source of 24 VDC-like power for Allen-Bradley automation racks.