Allen-Bradley 1746-P4 Power Supply Module

The Allen-Bradley 1746-P4 Power Supply Module is a rack-mount power source for the SLC 500 system, designed to install in 1746-A1 through 1746-A10 chassis and provide dual DC rails to the backplane. It accepts 85–132 VAC or 170–250 VAC input at 47–63 Hz and delivers 5 VDC up to 10 A and 24 VDC up to 2.88 A, for a maximum of 70 W. The module measures roughly 5.5 x 4.3 x 5.7 inches and weighs about 2.5 lb. Operating temperature is 0 to 60°C (32 to 140°F) with non-condensing humidity up to 95%. This power supply powers the SLC 500 backplane and I/O modules within the chassis, delivering stable 5 V logic and 24 V power for field devices in industrial cabinets. Suitable for retrofits, spares, or refurbishments in legacy automation setups using the 1746 SLC platform, the 1746-P4 is part of the 1746 power supply family and remains a common replacement part for maintaining uptime in older Allen-Bradley systems.