Allen-Bradley 1746-OB16

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1746-OB16

Type

Digital output module

Application

I/O module

Used with

SLC 500 1746 chassis

Number of outputs

16

Voltage category

24V DC

Operating voltage

10…50V DC

Backplane current

280 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 @ 30 °C (86 °F) 4.0 A @ 60 °C (140 °F)

Technical documents (1)

• Rockwell Automation SLC 500 systems selection guide 1747-SG001

Key features

• 16 DC outputs per module
• Operating voltage of 10…50V DC
• Backplane current of 280 mA
• Signal on delay 0.1 ms, off delay 1.0 ms
• Voltage drop of 1.2V at 0.5 A

About the Allen-Bradley 1746-OB16

The 1746-OB16 is an SLC 16 point DC output module, now discontinued. Its 16 outputs are in the 24V DC category, with an operating range of 10…50V DC, a voltage drop of 1.2V at 0.5 A and a minimum load current of 1 mA. Continuous current is 8.0 A at 30 °C (86 °F) and 4.0 A at 60 °C (140 °F).

What is the 1746-OB16 used for?

It switches 24V DC loads such as relays and solenoid valves from an SLC 500 controller. Signal delays are 0.1 ms on and 1.0 ms off, and it draws 280 mA from the backplane.

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-OB16, 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.