Allen Bradley 1756-PB72 Power Supply Unit

The AB 1756-PB72 is a high-efficiency DC power supply module for ControlLogix chassis-based systems, delivering up to 75W of backplane power from a 24V DC source. Designed for use in industrial automation environments where DC input power is required, this unit ensures stable operation for modules mounted in the same chassis.

Capable of delivering multiple voltage rails simultaneously, the 1756-PB72 supplies 1.5A at 1.2V, 4A at 3.3V, 10A at 5V, and 2.8A at 24V to support both logic and I/O requirements. It is a reliable and space-efficient solution ideal for machine builders, OEMs, and end users deploying ControlLogix architectures with DC power systems.

Technical Specifications

Model: 1756PB72
Series: ControlLogix
Type: Power Supply Module
Input Voltage: 24V DC (18–32V DC range)
Output Power: 75 W
Chassis Compatibility: ControlLogix standard and extended chassis
Application: Modular backplane power distribution

Electrical Specifications

Input Voltage Range: 18–32 V DC
Nominal Input Voltage: 24 V DC
Power Output Capacity: 75 W total
Output at 1.2V: 1.5 A
Output at 3.3V: 4.0 A
Output at 5.0V: 10.0 A
Output at 24V: 2.8 A
Power Supply Type: Non-redundant
Inrush Current: 25 A max
Isolation Voltage: 30V (functional insulation)
Input Type: DC only

Mechanical Specifications

Width: 78 mm
Height: 140 mm
Depth: 145 mm
Mounting Type: Rack-mounted in ControlLogix chassis
Cooling Method: Natural convection
Weight: Approx. 0.9 kg
LED Indicators: Power status (green/red)
Housing Material: Industrial-grade thermoplastic

Environmental Specifications

Operating Temperature: 0…60 °C
Storage Temperature: –40…85 °C
Humidity: 5% to 95% non-condensing
Shock Resistance: 30 g, 11 ms (IEC 60068-2-27)
Vibration Resistance: 2 g, 10–500 Hz (IEC 60068-2-6)
Altitude Rating: Up to 2000 m
Pollution Degree: 2
Certifications: CE, UL, cULus, RoHS, RCM

Compliance & Communication

Redundancy Support: No (for redundant operation, use paired supplies and redundancy module)
Monitoring Interface: None – status via chassis or controller diagnostics
Communication Ports: None
Diagnostics: Local LED indication
Protection Features: Overvoltage, short-circuit, and overcurrent protection
System Integration: Compatible with 1756 ControlLogix controllers and I/O modules

Key Features & Benefits

✅ Compact 75W DC Power Supply – Efficiently powers ControlLogix chassis with 24V DC input

✅ Multiple Output Rails – Supports a wide range of module voltages simultaneously

✅ Reliable Power Distribution – Stable operation for logic, communication, and I/O modules

✅ ControlLogix Compatible – Seamless fit into Allen Bradley 1756 chassis systems

✅ Easy Rack Installation – Front-load design with secure mechanical and electrical integration

📦 Order the Allen Bradley 1756-PB72 from Drive Outlet Megastore

At Drive Outlet Megastore we offer unbeatable Allen Bradley 1756-PB72 prices. While this unit is currently out of stock, you can still request a quote or place a backorder to secure this essential DC power supply for your ControlLogix systems.

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Drive Outlet Megastore – your trusted source for Allen Bradley power modules and chassis-based automation components.