Allen Bradley 1746-P1 SLC 500 Rack Mount Power Supply Module

FAQ

Q1: What is the 1746‑P1 module used for?
It is the main power supply for an Allen‑Bradley SLC 500 rack, providing DC power to the backplane and I/O modules.

Q2: What AC input voltages can the 1746‑P1 accept?
It accepts dual‑range AC input: 85–132 V AC or 170–265 V AC at 47–63 Hz.

Q3: What DC outputs does it provide?
It supplies ~2 A at 5 V DC and ~0.46 A at 24 V DC to the backplane, with ~200 mA user power at 24 V DC.

Q4: Does it have protection features?
Yes, it uses an internal fuse (e.g., 1746‑F1) and supports user‑supplied overcurrent protection up to ~15 A.

Q5: What is the isolation rating for this power supply?
The input to backplane isolation is rated around 1800 V AC RMS for 1 second.

Q6: Where is the power supply mounted?
It mounts on the left side of the SLC 500 chassis and does not occupy an I/O slot.

Q7: What are the physical dimensions and weight?
Approximate size is ~65 mm × ~140 mm × ~140 mm and weight around ~0.45–0.70 kg.

Q8: Is the 1746‑P1 still manufactured?
No, it is discontinued and considered a legacy component of the SLC 500 platform.

1746-P1 Allen Bradley

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