Allen-Bradley 1768-PB3 Power Supply Module 24VDC

The Allen-Bradley 1768-PB3 CompactLogix Power Supply Module is a 24V DC input power supply that both powers the CompactLogix 1768 backplane and provides a 24V DC feed to a front-panel terminal block. It accepts a single DC input in the range of 16.8 to 31.2 V and delivers a 24V DC output to the backplane rated at 3.5 A, enabling reliable operation of 1768 I/O modules in the chassis. In addition to backplane power, the PB3 offers a separate 24V DC distribution path to the front-panel terminal block for local field devices, simplifying wiring in compact panels. Designed for CompactLogix L4x configurations, the PB3 includes hold-up/ride-through performance to maintain bus power during brief input fluctuations, with a minimum ride-through time of 5 ms at 90 W load.