Allen-Bradley 1756-PA75 Compact AC Power Supply Module

Overview

The 1756-PA75 is a standard AC power supply from the Allen-Bradley ControlLogix family, engineered to provide consistent and efficient power delivery to chassis and system modules. It supports universal AC input, robust electrical protection, and stable operation across a broad temperature range, making it suitable for diverse industrial automation applications.

Technical Specifications

• Manufacturer: Allen-Bradley

• Model / Part Number: 1756-PA75

• Product Type: Standard AC Power Supply

• Series: ControlLogix

Electrical Characteristics

• Input Voltage Range: 85…265V AC

• Nominal Input Voltage: 120V / 240V AC

• Input Frequency: 47…63 Hz

• Maximum Input Power: 100 VA / 100 W

• Output Power: 75 W (rated for 0…60°C / 32…140°F)

• Inrush Current: 20 A max

• Output Regulation: ±3% typical

• Power Factor: >0.95

Thermal & Environmental Ratings

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

• Storage Temperature: -40°C to +85°C (-40°F to +185°F)

• Enclosure Rating: None (open-style design)

• Temperature Code: T4 (North America)

• Relative Humidity: 5% to 95%, non-condensing

Mechanical Details

• Mounting Type: Chassis mount

• Weight: 0.95 kg (2.10 lb)

• Conductor Screw Torque: 0.565 N·m (5 lb-in)

Application Notes

The 1756-PA75 is designed to supply power to a single ControlLogix chassis and its installed modules. It is ideal for use in process control, discrete manufacturing, and high-reliability automation systems. The wide input range and high efficiency make it suitable for global installations requiring stable power performance.

FAQ

Q: What is the rated output power of the 1756-PA75?
A: The module delivers up to 75 W of continuous output power across the 0…60°C operating range.

Q: Does this power supply support universal AC input?
A: Yes, it supports 85…265V AC with automatic selection between 120V and 240V nominal.

Q: Is the 1756-PA75 compatible with all ControlLogix chassis sizes?
A: Yes, it supports all standard ControlLogix chassis models, depending on total load requirements.

Q: Does the module include overcurrent or surge protection?
A: It includes integrated surge suppression and inrush current limiting for enhanced reliability.