1756-PA75R | Allen-Bradley | ControlLogix Redundant Power Supply Module

Overview
The 1756-PA75R from Allen-Bradley is a redundant power supply designed for ControlLogix systems, providing reliable backup power and high availability in critical automation applications.

Technical Specifications

• Model: 1756-PA75R

• Manufacturer: Allen-Bradley

• Module Type: Redundant Power Supply

• Input Voltage Range: 85–265V AC

• Nominal Input Voltage: 120V/240V AC, 50/60 Hz

• Input Frequency Range: 47–63 Hz

• Maximum Input Power: 120 VA / 115 W

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

• Inrush Current: 20 A maximum

• Output Current Capacity:

• 1.2V: 1.5 A

• 3.3V: 4 A

• 5.1V: 13 A

• 24V: 2.8 A

• Annunciator Power: 240V AC / DC, 50 mA resistive

• Isolation Voltage: 250V continuous, reinforced insulation

• Tested Withstand: 3250V DC for 60 seconds

• Dimensions (HxWxD): 17.5 x 14.5 x 13.7 cm (6.9 x 5.7 x 5.4 in)

• Weight: 1.45 kg (3.2 lb)

• Wire Size Recommendations:

• Power: 2.5 mm² (14 AWG) copper, solid/stranded, 90°C rated

• Annunciator: 0.25–2.5 mm² (22–14 AWG) copper, solid/stranded, 90°C rated

• Wire Category: 3 on annunciator ports, 1 on power ports, 3 on 1756-CPR2 connections

• Conductor Screw Torque: 0.79 N·m (7 lb·in)

• Enclosure Type: Open-style, no enclosure

• Temperature Rating: North American T3C

Features

• Supports fully redundant ControlLogix system configurations

• Provides continuous power isolation and surge protection

• Compact design with robust connectivity for critical applications

• Compatible with ControlLogix chassis and 1756-CPR2 controllers

Applications

• High-availability industrial automation systems

• Mission-critical process control setups

• Redundant power configurations for ControlLogix I/O systems

FAQs

• Q: Can this module operate in a standard single power configuration?
  A: Yes, it can function as a standard power supply, but its full redundancy features require a paired module.

• Q: Does it support hot-swapping?
  A: Yes, it can be replaced without shutting down the ControlLogix chassis.

• Q: What chassis is it compatible with?
  A: Compatible with all standard ControlLogix chassis supporting redundant power supplies.