Allen-Bradley 1756-PA75 AC Power Supply Module powers ControlLogix backplanes by converting AC input to the module’s 5 V and 24 V rails. It accepts 85–265 V AC (nominally 120/240 V) and provides up to 75 W of total power, with 5 V DC output up to 13 A and a 24 V rail capable of about 2.8 A. Designed for Series B chassis, it mounts on the left side of the 1756 backplane; its dimensions are about 5.5 in × 4.4 in × 5.7 in and it weighs roughly 2.5 lb, with an operating temperature range of 0–60 °C.
