Allen-Bradley 1794-OB32P

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1794-OB32P

Type

Digital output module

Application

I/O module

Used with

FLEX I/O adapters and terminal bases

Voltage, on-state output, nom

24V DC, sourcing

Voltage, on-state output, min

10V DC

Voltage, on-state output, max

31.2V DC

Voltage drop, on-state output

0.5V DC

Current on-state output, min

1.0 mA per channel

Current, on-state output, max

500 mA per channel, 14 A per module

Leakage current, off-state

0.5 mA

Output surge current, max

2 A for 50 ms, repeatable every 2 s

Output delay time, Off to On, max

0.5 ms

Output delay time, On to Off, max

1.0 ms

External DC supply voltage range

10…31.2V DC (5% AC ripple)

External DC supply current range

103…273 mA

Power dissipation, max

5.3 W @ 31.2V DC

Thermal dissipation, max

18.1 BTU/hr @ 31.2V DC

Dimensions (HxWxD), approx

46 x 94 x 53 mm (1.8 x 3.7 x 2.1 in.) 94 x 94 x 69 mm (3.7 x 3.7 x 2.7 in.) installed

Isolation voltage

Type tested at 850V DC for 60 s, between field side and system

Temperature, operating

0…55 °C (32…131 °F)

Technical documents (1)

• Rockwell Automation FLEX I/O selection guide 1794-SG002

Key features

• 32 digital outputs, 24V DC sourcing
• 500 mA per channel, 14 A per module
• Off to On delay of 0.5 ms maximum
• Output surge current of 2 A for 50 ms
• Type tested at 850V DC isolation for 60 s

About the Allen-Bradley 1794-OB32P

The 1794-OB32P is a FLEX I/O 32 point digital output module. Its 24V DC sourcing outputs work from 10V DC to 31.2V DC, at 500 mA per channel and 14 A per module. Output delays are 0.5 ms Off to On and 1.0 ms On to Off maximum, and it works from 0…55 °C (32…131 °F).

What is the 1794-OB32P used for?

It switches 32 24V DC loads from a FLEX I/O node. The field side is isolated from the system, type tested at 850V DC for 60 s. It needs an external supply of 10…31.2V DC, drawing 103…273 mA.

Lifecycle and successor

Active Mature (Rockwell Automation lifecycle status, checked 24 October 2026).

Before you order

What to photograph or confirm so the right unit is quoted.

Read the catalog number 1794-OB32P, the series letter and the firmware revision from the label. Send us a photo of the label and we confirm the match before we quote.