Description:

The Allen-Bradley 1746-P1 Power Supply Module (1746P1) is used in SLC 500 control systems to provide regulated AC input power to the chassis backplane and installed I/O modules. Commonly installed in SLC 500 racks within industrial control panels, manufacturing systems, and process automation equipment where stable and reliable PLC power is required. Maintenance teams, OEMs, and system integrators use this power supply for system repairs, replacement of failed units, rack refurbishment, and maintaining dependable operation of legacy SLC platforms.

Applications:

The Allen-Bradley 1746-P1 power supply is widely used in industrial environments operating SLC 500 controllers to energize CPUs, communication modules, and I/O cards. It supports manufacturing plants, water treatment facilities, material handling systems, and processing operations where consistent PLC backplane power is essential for system uptime and performance.

Technical Specifications:

• Manufacturer: Allen-Bradley (Rockwell Automation)
• Model / Part number: 1746-P1
• Product type: PLC power supply module
• Platform: SLC 500
• Input voltage: 120/240 V AC
• Input frequency: 47–63 Hz
• Output: Backplane power for SLC 500 chassis
• Mounting: Chassis-mounted (left side of rack)
• Compatible chassis: 1746 SLC 500 racks
• Application environment: Industrial automation systems

Common Replacements:

• Allen-Bradley 1746-P2
• Allen-Bradley 1746-P4
• Siemens 6EP1333-3BA10