Allen-Bradley CompactLogix 1769-PA4 AC Expansion Power Supply

Product Description

The 1769-PA4 (1769-PA4) is a high-capacity AC expansion power supply engineered for Allen-Bradley CompactLogix and MicroLogix 1500 controller systems. It is designed to provide robust backplane power to extensive I/O configurations, delivering a regulated 5V DC and 24V DC output. This module is essential when the power consumption of high-density analog, specialty, or digital modules exceeds the limits of standard power supplies like the 1769-PA2.

The 1769-PA4 (1769-PA4) features a universal auto-ranging AC input (85–265V AC), allowing for global deployment without manual jumper settings. Its high-output design supports up to 8 I/O modules on either side of the power supply within a single bank, doubling the 5V current capacity of smaller units. Integrated short-circuit protection and reinforced isolation ensure maximum system uptime and hardware protection in demanding industrial environments.

Detailed Technical Specifications

The following specifications define the electrical and environmental parameters for the 1769-PA4:

• Manufacturer: Allen-Bradley / Rockwell Automation

• Model Number: 1769-PA4

• Product Type: AC Expansion Power Supply

• Input Voltage Range: 85–265V AC (Auto-ranging)

• Nominal Input: 120V AC / 240V AC (50/60 Hz)

• Backplane Output (5V DC): 4.0 Amps

• Backplane Output (24V DC): 2.0 Amps

• Power Consumption: 200 VA @ 120V AC; 240 VA @ 240V AC

• Max Power Dissipation: 18.0 Watts

• Max Inrush Current: 25 A @ 132V AC

• Power Supply Distance Rating: 8 modules (maximum per side)

• Isolation Voltage: 250V continuous (Reinforced Insulation Type)

• Operating Temperature: 0–60 °C (32–140 °F)

• Dimensions (H x W x D): 118 x 70 x 87 mm

• Mounting: DIN Rail or Panel Mount

• Weight: 0.52 kg (1.15 lbs)