Allen-Bradley 1756-PA72 ControlLogix AC Power Supply

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Allen-Bradley 1756-PA72 ControlLogix AC Power Supply 

Product Description

The 1756-PA72 is a standard AC power supply module designed for Allen-Bradley ControlLogix systems, providing 1.2V, 3.3V, 5V, and 24V DC power to the 1756 chassis backplane. It is installed in the leftmost slot of the ControlLogix rack and is compatible with both A-series and B-series chassis .

Key Features

1. Wide Input Voltage Range

   • 85–265V AC (47–63 Hz), supporting global power standards 

   • Nominal input: 120/240V AC .

2. Multiple DC Outputs

   • 1.2V DC @ 1.5A

   • 3.3V DC @ 4.0A

   • 5V DC @ 10.0A

   • 24V DC @ 2.8A .

3. High Reliability & Protection

   • Non-replaceable fuse for overcurrent protection.

   • Isolation voltage: 2500V AC (enhanced insulation) .

   • Surge current tolerance: 20A (max) 

4. Environmental Adaptability

   • Operating temperature: 0°C to +60°C (derating above 50°C) .

   • Storage temperature: -40°C to +85°C .

   • Humidity: 5–95% non-condensing .

5. Compact & Industrial Design

   • Open-frame module (IP20-rated), requiring an enclosure for harsh environments .

   • Dimensions: 140 × 112 × 45 mm (approx.) .

   • Weight: 0.19KG   

Applications

• Process Automation (oil & gas, chemical plants) .

• Manufacturing (motor control, conveyor systems) .

• Power Distribution (redundant control systems) .

Installation & Usage Notes

1. Mounting

   • Must be installed in the leftmost slot of the 1756 chassis .

   • Ensure proper grounding to avoid EMI interference .

2. Redundancy

   • Not natively redundant (requires 1756-PA75R for redundancy) .

3. Maintenance

   • Regularly check cooling vents for dust accumulation .

   • Avoid overloading (max 75W output at 60°C).

The structure and details of the product：

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