Allen Bradley 1756-PA75 Standard AC power supply for ControlLogix chassis

FAQ

Q1: What is the 1756‑PA75 used for?
It is a power supply module that provides DC backplane power to ControlLogix chassis and I/O modules.

Q2: What input voltage range does this power supply support?
It accepts a wide AC input range from 85 VAC to 265 VAC at 47–63 Hz.

Q3: What DC outputs does the 1756‑PA75 provide?
It supplies multiple backplane DC rails, including 1.2 VDC, 3.3 VDC, 5.1 VDC, and 24 VDC.

Q4: How much output current can it deliver?
Typical currents are ~1.5 A (1.2 V), ~4 A (3.3 V), ~13 A (5.1 V), and ~2.8 A (24 V).

Q5: What is the maximum power output?
The total output power rating is approximately 75 W at 60 °C.

Q6: Does it provide any protection features?
Yes, it has internal reinforced insulation and hold‑up time to help ride through brief input fluctuations.

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

Q8: What are the size and weight of the 1756‑PA75?
It measures about 145 mm × 112 mm × 145 mm and weighs around 0.95 kg.

1756-PA75 Allen Bradley

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