Allen Bradley 1746-P1 Power Supply Module

Product Introduction

The Allen-Bradley 1746-P1 is an AC power supply module designed specifically for the SLC 500 programmable controller platform. It provides regulated low-voltage DC power to the SLC 500 backplane, ensuring stable operation of the processor, I/O modules, and communication adapters installed in the same rack.

This module is intended for rack-mounted control systems operating in industrial environments where reliability, electrical stability, and long-term availability of spare parts are critical. The 1746-P1 converts a wide range of AC input voltages into a consistent 5 VDC output, supporting both single-rack and multi-rack SLC 500 configurations.

The power supply integrates internal protection mechanisms to guard against overcurrent, overvoltage, and abnormal line conditions. Its design aligns with legacy automation systems where predictable behavior and compatibility with existing SLC 500 hardware are required. The 1746-P1 is commonly used in system upgrades, maintenance projects, and replacement scenarios where original electrical characteristics must be preserved.

Product Specifications

Applications

• PLC system power distribution for SLC 500 control architectures

• Manufacturing automation lines requiring stable controller and I/O operation

• Process control systems in oil & gas, water treatment, and chemical plants

• Legacy control system maintenance where original power characteristics must be retained

• Machine control panels supporting discrete and analog I/O configurations

• Retrofit and expansion projects using existing SLC 500 hardware

Advantages

• Wide AC input voltage range, allowing use in different regional power systems

• Stable and regulated 5 VDC output to protect sensitive processor and I/O electronics

• Direct backplane integration, eliminating the need for external DC power wiring

• High compatibility with all standard SLC 500 racks and modules

• Robust industrial design suitable for continuous operation in control cabinets

• Proven reliability in long-term field applications across multiple industries

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