The Allen-Bradley 1756-PB75R is a redundant DC power supply module from the ControlLogix series designed to provide reliable power for ControlLogix Programmable Automation Controllers (PACs). Operating within an input voltage range of 18–32 VDC (nominal 24 VDC), it delivers 75 watts of output power at ambient temperatures from 0°C to 60°C (32°F to 140°F). The module offers current capacities of 1.5 A at 1.2 V, 4 A at 3.3 V, 13 A at 5.1 V, and 2.8 A at 24 V, ensuring stable and efficient power distribution across the system. It is typically installed on the left side of the chassis and can be paired with the 1756-PSCA2 or 1756-PSCA2K chassis adapter for full redundancy support.