Allen-Bradley 1746-OA16

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1746-OA16

Type

Digital output module

Application

I/O module

Used with

SLC 500 1746 chassis

Number of outptus

16

Points per common

8

Voltage category

120/240V AC

Operating voltage range

85…265V AC @ 47…63 Hz

Backplane current (mA) @ 5V

370 mA

Backplane current (mA) @ 24V

0 mA

Voltage drop, on-state output, max

1.50V @ 0.50 A

Load current, min

10 mA

Leakage current, off-state output, max

2 mA

Surge current per point, max

10 A for 25 ms

Signal on delay, max (resistive load)

1 ms

Signal off delay, max (resistive load)

11 ms

Continuous current per point

0.50 A @ 30 °C (86 °F) 0.25 A @ 60 °C (140 °F)

Continuous current per module

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 output points with 8 points per common
• Operating range 85…265V AC at 47…63 Hz
• Continuous 0.50 A per point at 30 °C
• Surge current up to 10 A for 25 ms per point
• Maximum off-state leakage current of 2 mA

About the Allen-Bradley 1746-OA16

The 1746-OA16 is an SLC 16 point AC output module, now discontinued. Its 16 outputs sit at 8 points per common in the 120/240V AC category, working from 85…265V AC at 47…63 Hz. On-state voltage drop is 1.50V at 0.50 A maximum and minimum load current is 10 mA. It draws 370 mA at 5V and 0 mA at 24V from the backplane.

What is the 1746-OA16 used for?

It switches AC loads such as contactors and solenoids from an SLC 500 controller. Continuous current is 0.50 A per point and 8.0 A per module at 30 °C, falling to 0.25 A per point and 4.0 A per module at 60 °C. With resistive loads the signal on delay is 1 ms and the off delay 11 ms maximum.

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-OA16, 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.