Allen-Bradley 1771-P4S1 PLC-5 Power Supply Module

Allen-Bradley 1771-P4S1 PLC-5 Power Supply Module is a one-slot chassis power supply for the PLC-5 family. It accepts 100V AC input (nominal range 85–120V AC, 47–63 Hz) and delivers 5V DC on the backplane at up to 8A to power the PLC-5 backplane and attached I/O modules. The module occupies a single chassis slot in PLC-5 systems and weighs about 1.8 lb. According to standard documentation, the P4S1 provides 100V AC input with 5V DC output at 8A and has no onboard fuse specified for this model. The P4S1 form factor and current rating make it suitable for remote I/O configurations where stable 5V power is required for PLC-5 backplanes in industrial automation environments.