Allen-Bradley 1769-PA4 Power Supply 120/240 1769PA4

Description:

The Allen-Bradley 1769-PA4 is a 120/240V AC power supply module used in CompactLogix and Compact I/O control systems to provide regulated backplane power for controllers and I/O modules. It converts incoming AC line voltage into the required DC power for system operation and supports modular expansion within CompactLogix architectures. Commonly installed in machine control panels, automated production lines, packaging systems, and material handling equipment, this power supply ensures stable operation of connected modules. Maintenance teams and system integrators use this unit for system commissioning, panel builds, retrofit projects, expansion of existing I/O banks, and replacement of failed power supplies in industrial automation environments.

Applications:

The 1769-PA4 power supply is used to energize CompactLogix controllers and 1769 Compact I/O modules in distributed and standalone automation systems. It is widely applied in assembly machines, conveyor systems, processing equipment, and OEM-built machinery where consistent and regulated backplane power is required to maintain reliable PLC and I/O performance.

Technical Specifications:

• Manufacturer Part Number (MPN): 1769-PA4
• Brand: Allen-Bradley
• Product Type: AC Power Supply Module
• Controller Platform: CompactLogix / 1769 Compact I/O
• Input Voltage: 120/240V AC (auto-selectable)
• Input Frequency: 47–63 Hz
• Input Voltage Range: 85–265V AC
• Output Voltage (Backplane): 5V DC and 24V DC
• Maximum Output Current: 4A at 5V DC (module dependent)
• Mounting: Panel mount / DIN rail
• Operating Temperature: 0 to 60°C (32 to 140°F)
• Isolation: Input to backplane isolation

Common Replacements:

• Allen-Bradley 1769-PA2
• Allen-Bradley 1769-PB4
• Allen-Bradley 1769-PB2