Allen-Bradley 1746-OB32

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1746-OB32

Type

Digital output module

Application

I/O module

Used with

SLC 500 1746 chassis

Number of outputs

32

Voltage category

24V DC

Operating voltage

5…50V DC

Backplane current

190 mA

Voltage drop

1.2V @ 0.5 A

Load current, min.

1 mA

Signal on delay

0.1 ms

Signal off delay

1.0 ms

Continuous

8.0 A @ 0…60 °C (32…140 °F)

Technical documents (1)

• Rockwell Automation SLC 500 systems selection guide 1747-SG001

Key features

• 32 digital outputs on one module
• Operating voltage range of 5…50V DC
• Voltage drop of 1.2V at 0.5 A
• Signal on delay 0.1 ms, off delay 1.0 ms
• Continuous rating of 8.0 A at 0…60 °C

About the Allen-Bradley 1746-OB32

The 1746-OB32 is an SLC 32 point digital output module, now discontinued. Its 32 outputs are in the 24V DC category, with an operating range of 5…50V DC, a voltage drop of 1.2V at 0.5 A and a minimum load current of 1 mA (selection guide 1747-SG001). It draws 190 mA from the backplane.

What is the 1746-OB32 used for?

It switches 32 24V DC loads from an SLC 500 controller in a single slot. Signal delays are 0.1 ms on and 1.0 ms off, and the continuous rating is 8.0 A at 0…60 °C (32…140 °F).

Lifecycle and successor

Discontinued (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 1746-OB32, 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.