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- Allen-Bradley
- 1768-PA3
- CompactLogix Power Supply
- USA
- 131.25 x 132.75 x 105.5 mm
- 0.98 kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
- 1-3 Working Days
- DHL, UPS, TNT, FedEx and EMS.
- 24-Hour Service
- COO
- 6
Our advantage
Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview
The Allen-Bradley 1768-PA3 CompactLogix Power Supply is a robust and compact 24V DC power source designed specifically for CompactLogix controllers and their associated I/O modules. It provides stable, continuous power to ensure reliable operation of automation systems, minimizing downtime and ensuring consistent performance in industrial environments.
This power supply is engineered to integrate seamlessly with CompactLogix backplanes, supporting multiple controllers and I/O modules in a single control cabinet. Its compact design saves panel space while delivering sufficient power for mid-sized automation applications.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Allen-Bradley |
| Model | 1768-PA3 |
| Series | CompactLogix Power Supply |
| Product Type | 24V DC Power Supply |
| Input Voltage | 120–240V AC, 50/60 Hz |
| Output Voltage | 24V DC |
| Output Current | 3 A |
| Efficiency | ≥ 85% |
| Mounting Type | DIN rail or panel mounting |
| Dimensions | 131.25 × 132.75 × 105.5 mm |
| Weight | 0.98 kg |
| Operating Environment | Industrial automation systems |
| Compatible Controllers | CompactLogix L-series CPUs |
| Typical Use | Supplying power to PLCs and I/O modules |
Function and Working Principle
The 1768-PA3 provides a regulated 24V DC output to CompactLogix systems:
- Converts AC mains voltage to regulated DC output
- Supplies power to the CompactLogix CPU, I/O modules, and communication interfaces
- Includes overload, short-circuit, and thermal protection to safeguard connected devices
- Maintains stable voltage even under varying load conditions
- Supports hot-swappable I/O modules without system shutdown
This ensures uninterrupted operation of industrial control systems.
Role in Industrial Control Systems
As a dedicated CompactLogix power source, the 1768-PA3:
- Powers controllers, digital and analog I/O modules
- Provides consistent DC voltage for reliable PLC operation
- Supports expansion of control systems with additional modules
- Ensures system stability and reduces the risk of downtime due to power fluctuations
It is essential for maintaining continuous, high-reliability operation in automated environments.
Industrial Applications
The 1768-PA3 is widely used in:
- Manufacturing and production lines
- Packaging and assembly machinery
- Material handling and conveyor systems
- Water and wastewater treatment automation
- Food and beverage processing plants
- HVAC and building automation systems
Its reliability and compact design make it suitable for mid-sized control panels.
Installation and System Integration
For optimal performance:
- Mount the power supply on a DIN rail or panel inside the control cabinet
- Connect AC mains input according to voltage specifications
- Ensure proper grounding to reduce electrical noise
- Connect the DC output to CompactLogix CPUs and I/O modules
- Verify polarity and load capacity before powering the system
Proper installation ensures stable operation and protects connected equipment.
Compatible System Components
The 1768-PA3 works seamlessly with:
- CompactLogix L-series CPUs (e.g., 1768-L45, 1768-L45S)
- 1769 Compact I/O modules (digital, analog, and specialty)
- HMIs and PanelView terminals
- Servo drives and motors when connected via CompactLogix controllers
- Safety I/O modules for integrated system protection
It forms the backbone of a reliable, scalable CompactLogix automation system.
Recommended Alternative Models
| Model | Type | Key Feature | Application |
|---|---|---|---|
| 1768-PA2 | CompactLogix Power Supply | 2 A output | Small-scale CompactLogix systems |
| 1768-PB3 | CompactLogix Power Supply | 3 A output, extended features | Mid-range systems requiring more current |
| Allen-Bradley 1606-XLP | Power Supply | DIN rail, 24V DC, high efficiency | General industrial automation |
| Siemens SITOP PSU8600 | Industrial Power Supply | Redundant power support | Critical systems requiring continuous power |
| Phoenix Contact QUINT | Industrial Power Supply | High-reliability 24V DC | Automation panels with multiple modules |
Key Advantages
- Provides reliable, regulated 24V DC output for CompactLogix systems
- Compact design saves cabinet space
- Overload, short-circuit, and thermal protection included
- Supports expansion of PLC and I/O modules
- Enables uninterrupted operation of industrial automation systems
- Easy DIN rail or panel mounting
Technical FAQs
What is the main function of the 1768-PA3?
It supplies 24V DC regulated power to CompactLogix controllers and I/O modules.
Which controllers is it compatible with?
It is compatible with L-series CompactLogix CPUs such as 1768-L45 and 1768-L45S.
Can it handle multiple I/O modules?
Yes, it can provide sufficient current to support several digital, analog, and specialty I/O modules.
Does it include protection features?
Yes, it includes overload, short-circuit, and thermal protection.
Conclusion
The Allen-Bradley 1768-PA3 CompactLogix Power Supply is a reliable, compact, and efficient solution for powering CompactLogix PLCs and their associated I/O modules. Its regulated output, robust protection features, and seamless integration make it ideal for mid-range industrial automation applications, ensuring uninterrupted operation and system stability.