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Allen Bradley | SLC-500 | 1746-P4 | Image

Allen Bradley | SLC-500 | 1746-P4 | Image Allen Bradley | SLC-500 | 1746-P4 | Image

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Other Available Revisions for the 1746-P4 1746-P4/A

Common misspellings:
  • l746-P4
  • 17A6-P4
  • 1746-PA
  • 1746P4


The Allen-Bradley 1746-P4 is a power supply of the SLC 500 series. The separate power supplies for the SLC 500 systems require direct mounting onto the left end of the 1746 I/O chassis. Power supplies are required for providing power to each I/O slot and the processor. The 1746-P4 features an LED which indicates that the power is on. This LED provides extra convenience when monitoring if your supply is properly working. In case of power losses, the 1746-P4 has a hold-up time of 20ms for a full load and 3000 ms so the system can withstand brief power losses without corrupting the operation of the full system.


The nominal input voltage for the 1746-P4 is 120 or 220V ac, and the input voltage range is 85-132V ac or 170-265V ac. The maximum inrush current is 45A. The maximum real input power is 92 Watts. The user output current is 1.0A at 24V dc, and the user output voltage range is 20.4-27.6V dc. The backplane output current for the 1746-P4 measures 10A at 5V dc and 2.88A at 24V dc. The total output power, including user, has a maximum of 70 Watts. There are a maximum of two 14 AWG wires per terminal. The fuses for the unit is soldered into place for protection.

The 1746-P4 is conveniently sized to save space with dimensions of 140 x 110 x 145 mm (5.5 x 4.3 x 5.7 in) and a weight of only 1.1 kg (2.5 lb). Operating temperatures for the unit should remain between 0-60 degrees Celsius (32-140 degrees Fahrenheit). Storage temperatures should be between -40-85 degrees Celsius (-40-185 degrees Fahrenheit).

Allen Bradley Pwr. Sply., 120/220 VAC, 92 W AB 1746-P

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