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A-B 1756-PB72 ControlLogix Power Supply Module

Product Overview

The Allen-Bradley 1756-PB72 is a 24 V DC power supply module designed for the ControlLogix programmable automation system. It converts an external DC input into the regulated voltages required by the ControlLogix chassis backplane, supplying power to controllers and I/O modules.

Key Technical Specifications

Specification	Details
Brand	Allen-Bradley (A-B)
Model	1756-PB72
Product Series	ControlLogix
Product Type	DC Power Supply Module
Nominal Input Voltage	24 V DC
Input Voltage Range	19.2–32 V DC
Maximum Output Power	75 W
5.1 V DC Output	10 A
3.3 V DC Output	4 A
1.2 V DC Output	1.5 A
24 V DC Output	2.8 A
Maximum Input Power	95 W
Approximate Weight	0.95 kg
Mounting	Left side of compatible ControlLogix chassis
Lifecycle Status	Active US +1

Features & Advantages

Provides power to the ControlLogix chassis backplane.
Supports multiple regulated DC output voltage rails.
Designed for integration with compatible ControlLogix chassis.
Supports industrial automation systems requiring stable backplane power.
Replaceable module simplifies maintenance and servicing.

Typical Applications

ControlLogix PLC systems
Industrial automation control panels
Distributed I/O installations
Manufacturing and process control
Industrial machinery and production lines

Important Notes

This module requires an external 24 V DC input; it is not an AC-input power supply.
It mounts on the left side of a compatible ControlLogix chassis.
It is a standard, non-redundant power supply. Verify chassis compatibility and total power requirements before installation.
Do not confuse the 1756-PB72 with the 1756-PA72, which is an AC-input model.