Allen-Bradley 1756-PA75 ControlLogix Power Supply

Allen-Bradley 1756-PA75 ControlLogix Power Supply is a fixed, non-redundant AC input power module for Rockwell Automation's ControlLogix 1756 backplanes, including the 10-slot 1756-A10 chassis. It accepts 85–265 VAC input at 47–63 Hz and delivers up to 75 W of power to the chassis backplane, powering the controller and I/O modules in standard ControlLogix configurations. The module's compact enclosure measures approximately 17.5 cm high, 14.5 cm wide, and 13.7 cm deep (6.9 in x 5.7 in x 5.4 in), making it a common fit in 10-slot chassis footprints. As part of Rockwell's ControlLogix power-supply family, the PA75 provides essential backplane power for the system; for redundant configurations, Rockwell offers the PA75R/PA75RK variants. In use, the PA75 ensures stable delivery of the necessary backplane power to support the controller and attached I/O modules, contributing to reliable PLC operation in industrial environments.