The Allen-Bradley 1771-P2 is an auxiliary power supply module. It delivers stable 5.1V DC output to a single I/O chassis. Engineers use it widely in industrial automation and process control. The unit supports reliable backplane power distribution. It operates efficiently with either 120V or 220/240V AC input. For battery backup, use the 1771-P1 instead. The 1771-P2 installs on the left-side plate or as a standalone unit. Ensure at least six inches of vertical clearance for cooling.

Technical Specifications

• Product Type: Auxiliary Power Supply
• Part Number: 1771-P2
• Manufacturer: Allen-Bradley (Rockwell Automation)
• Category: Power Supplies
• Subcategory: Power Supply
• Input Voltage: 120V AC or 220/240V AC
• Input Frequency: 50/60 Hz
• Input Current: 1.0 A @ 120V, 0.5 A @ 240V
• Output Voltage: 5.1V DC
• Output Current: 6.5 A
• Power Capacity: Supports one 1771 I/O chassis
• Battery Backup: Not included
• Mounting Type: Left-side plate or separate installation
• Connector Type: 9-pin plug (backplane power)
• Cooling Requirement: Minimum 6-inch vertical space for convection
• Weight: 11.99 lbs