Allen Bradley 1756-PB50 AC power supply for ControlLogix chassis

FAQ

Q1: What is the 1756‑PB50 used for?
It is a power supply module that provides regulated DC power to a ControlLogix backplane and modules.

Q2: What range of AC input does it accept?
It accepts a wide input range from 85 VAC to 265 VAC at 47 – 63 Hz.

Q3: What DC output does it provide?
It provides a 24 V DC backplane output at up to 5.0 A of current.

Q4: How much output power does it deliver?
The module’s total output power is approximately 120 W.

Q5: Does it provide multiple DC rails?
Yes, it supplies typical ControlLogix rails including 1.2 V, 3.3 V, 5.1 V, and 24 V.

Q6: Does it include protection features?
Yes — it includes overload, overvoltage, and short circuit protection.

Q7: Where is this power supply installed?
It installs in the dedicated left‑side power supply slot of a ControlLogix chassis.

Q8: What are the physical dimensions and weight of the unit?
The module measures about 178 mm × 79 mm × 158 mm and weighs around 1.4 kg.

1756-PB50 Allen Bradley

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