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1794-PS3 Allen Bradley | AB 1794PS3

  • Brand/ Manufacturer:

    Allen Bradley
  • Dimensions:

  • Weight:

  • Country of Origin: :

    United States
  • Description:

    Flex Power Supply

Mfr. Part Number:



         Allen-Bradley / Rockwell Automation


Allen-Bradley 1794-PS3 FLEX I/O Power Supply 120/230V AC, [email protected]

Full Description:

The Allen-Bradley 1794-PS3 is a Flex I/O power supply. This power supply has a nominal 

supply voltage of 120V AC, 50/60 Hz; 1.7 A max. and 230V AC, 50/60 Hz; 1.1 A max with 

a voltage range of 85-264VAC, 47-63 Hz. 

This power supply module is used to provide power to the Flex I/O modules and adapters. It has a 

maximum input current of 1.9  Amperes and able to withstand an inrush current of 40 A typical, 1 AC cycle

@ Vin 265V AC, 55 °C

  [email protected]    + 86 18030235313      dddemi33     2851195473

The Allen-Bradley 1794-PS3 is a Power Supply module. This module is part of the Flex I/O product family of distributed I/O modules. This module is mainly used to provide power to a Flex I/O assembly, providing the necessary backplane power to operate the installed modules.

The 1794-PS3 operates at a supply voltage range of 85-264VAC, 47-63Hz while the nominal supply voltage are 120V AC, 50/60 Hz; 1.7 A max. and 230V AC, 50/60 Hz; 1.1 A max. It requires a maximum input current of 1.9 Ampere and able to withstand an inrush current of 40 A typical, 1 AC cycle @ Vin 265V AC, 55 °C. This module also features a power supply hold-up time where Output will stay within specification when input drops out for 1/2 cycle @ 47 Hz, 85V AC with max. load.

The 1794-PS3 provides a nominal output voltage of 24VDC with voltage range of 20.4…27.6V DC, including noise and 5% AC ripple. When installed in horizontal orientation, the output current is 3 Amperes while 2.8 Amperes for other mounting orientations. It has an output power of 72 Watts and output ripple of 1200 mV peak-to-peak.

The output of the 1794-PS3 is capable of energizing up to Ten (1) Flex I/O adapters. It has an overcurrent protection of 3.2 Amperes, thermal dissipation of 41.0 BTU/hr and maximum power dissipation of 12 Watts. This power supply has an operating temperature of 0 °C < Ta < +55 °C (+32 °F < Ta < +131 °F), operating shock of 30 g and operating vibration of 5g @ 10…500 Hz.


Rockwell Automation

Thermal Dissipation

41.0 BTU/hr

Output Current

3 A (horizontal mounting); 2.8 A all other mountings

Part Number/Catalog No.




Product family:

Flex I/O system

Product Description:

Flex I/O Power Supply

Programming software:

RSLogix5, RSLogix500, RSLogix5000, Studio 5000 Logix Designer

Input Voltage range:


Input Frequency range:

47-63 Hz

Nominal input voltage:

120V AC, 50/60 Hz; 1.7 A max. 230V AC, 50/60 Hz; 1.1 A max.

Maximum input current:

1.9 A

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