Allen-Bradley 1756-PB75R ControlLogix Redundant Power Supply

Description

Allen-Bradley 1756-PB75R ControlLogix Redundant Power Supply is a redundant power module for the ControlLogix platform, designed to deliver reliable backup power for critical industrial control systems. While direct technical data for this model is unavailable, it shares core functionality and specifications with the comparable 1756-PA75 ControlLogix Standard Power Supply, including compatibility with ControlLogix chassis. It features a wide input voltage range of 85-265VAC and input frequency of 47-63Hz, with nominal input voltages of 120VAC/240VAC for flexible integration into global power grids. The module provides 75W of rated output power at operating temperatures of 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit), with increased output of 140W at temperatures between 0 and 75 degrees Celsius (32 to 60 degrees Fahrenheit). It offers multi-voltage DC output current capacities, including 4A at 3.3VDC, 13A at 5.1VDC, and 2.8A at 24VDC, to support diverse ControlLogix modules. Key features include power loss hold time (2 cycles at 85VAC 60Hz, 6 cycles at 120VAC 60Hz, 20 cycles at 220VAC 60Hz), reinforced insulation with a continuous isolation voltage rating of 250V, and passing a 3500V DC 60-second isolation test. It installs in the dedicated leftmost power slot of ControlLogix chassis to supply essential backplane power for all installed modules.