Allen-Bradley 1746-P1 Industrial Power Supply Module

Allen‑Bradley 1746‑P1 is a rack‑mount power supply module for the SLC 500 modular controller family, designed to provide the backplane power needed by the CPU and I/O modules within a 19‑inch SLC 500 chassis. It accepts wide‑range AC input for global installations: 85–132 V AC or 170–265 V AC at 47–63 Hz, supporting both 120 V and 240 V mains environments. The unit’s line power consumption is rated at about 122 VA when operated at 120 V AC and 135 VA at 240 V AC, reflecting the supply’s load on the incoming supply. Cataloged as 1746‑P1, this power module is intended to be installed alongside other 1746 backplane components in an SLC 500 rack, serving the power needs of the system without requiring external regulators or additional backplane power sources. It is part of the 1746 power supply family, which also includes P2, P3, and P4 variants with different input ranges and power characteristics to accommodate various regional mains and load requirements. This model is specifically associated with SLC 500 installations that rely on a dedicated rack‑mount power supply to sustain the operation of the processor and I/O modules through the system backplane.