Overview
The Allen-Bradley 1768-PA3 is a compact power supply module engineered for the 1768 CompactLogix product family. This power supply module is used with the 1768 CompactLogix product family and is manufactured by Allen-Bradley, primarily used to provide backplane power and user terminal block supply. Equipped with integrated overcurrent protection rated at 15A, the 1768-PA3 ensures system safety by preventing excessive current flow.
Key Features
- Input voltage range spans from 85-265V AC and 108-132V DC for safe operation
- Overcurrent protection rated at 15A with maximum inrush current of 50A within range of 80-132V AC and 80A within voltage range of 195-265V AC
- Maximum output power of 90W with continuous output of 3.5 A for 24VDC backplane and 0.25 A for user terminal block
- Mounting on either a panel mount or a DIN rail depending upon the system configuration or arrangement
- Typically achieves 75% efficiency, providing reliable performance with minimal energy loss
Technical Specifications
Key technical parameters for optimal system integration:
- Input frequency range of 47-63 Hz
- Maximum power dissipation of 30W
- Structure dimensions of 131.25 × 132.75 × 105.50 mm
- Weight of approximately 0.98 kg or 2.15 lb
- North American temperature code T4
- Requires M4 or #8 screws for mounting
Typical Applications
The 1768-PA3 is ideal for:
- Manufacturing process control and machine automation systems requiring CompactLogix platforms
- Oil and gas, water treatment, and process control environments with standard industrial AC/DC power availability
- Industrial systems requiring compact, DIN-rail mounted power distribution to CompactLogix backplanes
- Facilities requiring flexible input voltage acceptance across 120V or 240V AC utility standards
Compatibility & Replacements
Compatible With
- 1768 CompactLogix controller systems and architectures
- 1768 series I/O modules and backplane assemblies
- Industrial automation networks compatible with CompactLogix platforms
- DIN-rail or panel-mount industrial enclosures rated for power module installation
Replaces / Drop-In Replacement For
- Original 1768-PA3 power supply units in existing CompactLogix 1768 systems
- 1768 architecture systems requiring 24VDC backplane and terminal block supply
Works With
- Rockwell Automation Studio 5000 and Connected Components Workbench (CCW) for system programming
- CompactLogix 1768 controller platforms and native backplane power distribution
- Standard industrial AC/DC power sources with automatic voltage sensing (85-265V AC / 108-132V DC)
- Modular I/O and communication modules within the 1768 family ecosystem
