Allen Bradley 1746-P3 — Detailed Technical Overview

1. Product Introduction

The Allen Bradley 1746-P3 is a DC input power supply module designed for use in modular PLC rack systems. It is part of the SLC 500 platform and is responsible for converting external 24V DC input power into regulated voltages required by the backplane and installed modules.

Unlike AC-powered variants, the 1746-P3 is specifically intended for applications where a DC power source is already available, such as battery-backed systems or distributed control environments. This makes it particularly useful in installations that require stable operation even during power interruptions.

The module is installed directly into the chassis and serves as the primary power source for all I/O and processor modules within the rack. Its compact and rugged design allows it to operate reliably in demanding industrial conditions.

2. Product Parameters

Technical Specifications

3. Product Applications

The 1746-P3 is widely used in industrial control systems that rely on DC power infrastructure.

Typical applications include:

• Battery-supported automation systems
• Remote control stations
• Transportation and mobile equipment
• Process industries with centralized DC supply
• Renewable energy systems and substations

Because it uses DC input, it is especially suitable for systems where uninterrupted operation is critical, such as backup-controlled environments or energy storage applications.

4. Product Advantages

Designed for DC Systems
Optimized for 24V DC input environments, making it ideal for battery-backed or distributed power systems.

Stable Output Performance
Provides regulated 5V and 24V outputs to ensure consistent operation of PLC modules.

Reliable in Harsh Conditions
Built to withstand industrial environments, including electrical noise and temperature variations.

Compact Integration
Fits directly into the SLC 500 chassis, simplifying system design and maintenance.

Improved System Continuity
When used with DC sources, it helps maintain operation during AC power interruptions.

5. Brand Information

Allen Bradley is a recognized name in industrial automation, widely associated with programmable controllers, industrial power solutions, and control systems.

Its product lines are commonly used in manufacturing, infrastructure, and process control environments, valued for reliability and long-term availability.

6. Product Series

• Series Name: SLC 500
• Category: PLC Power Supply Module

The SLC 500 series is a modular control system that allows flexible expansion and configuration. It supports a wide range of processors, I/O modules, and communication interfaces, making it suitable for both small and medium-scale automation systems.

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