Allen-Bradley 1746-P2 SLC 500 Eight Slot Chassis

Allen-Bradley 1746-P2 is a rack-mount power supply module for the SLC 500 family, designed to install in the 1746 modular chassis and positioned at the far left without occupying an I/O slot. One unit is typically required per chassis to provide stable 18–30 V DC power to the backplane and I/O modules, with a nominal input voltage of 120 or 220–240 VAC at 47–63 Hz and up to 70 watts of input power. The unit delivers 5 V backplane current to the system (5 A) and 0.96 A backplane current at 24 V, plus a user output of up to 0.2 A at 24 V DC, supporting common SLC 500 configurations. Key electrical characteristics include a maximum input inrush current of 20 A and a 3 A, 250 V fuse protection, helping guard against surges during startup. The compact enclosure measures about 5.5 in high, 2.9 in wide, and 5.7 in deep (140 × 74 × 145 mm) and weighs around 2.5 lb (1.1 kg), with an operating temperature range of 0 to 60 °C, suited for industrial environments. This power supply is a core component for powering the SLC 500 backplane and ensuring consistent 5 V and 24 V rails for processors and I/O modules.