Ask our team:
  • Phone: +86 181 0690 9650
  • E-Mail sales1@apterpower.com

1746-OB8

/ 4.9
1001 reviews | Need a Specific Revision?
The Allen-Bradley 1746-OB8 DC Output Module is an 8-point digital output module designed for SLC 500 systems. It provides high-speed DC switching performance for industrial control applications.
Get a quick price for 1746-OB8
Quantity
*E-mail
Company
*Mobile
*Content
Upload (gif, jpg, jpeg, png, bmp, doc, docx, xls, xlsx, ppt, pdf, csv)

Technical specifications for 1746-OB8

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1746-OB8
  • Product Family:
    SLC 500
  • Watts per Point:
    0.775
  • Minimum Watts:
    0.675
  • Total Watts:
    6.90
  • Voltage category:
    24V DC Signal Output
  • Number of outputs:
    8
  • Points per common:
    8
  • Voltage, operating (V DC):
    10...50 (source)
  • Backplane current consumption:
    5V DC 0.135 A; 24V DC 0.0 A.
  • Signal delay, max resistive load:
    On = 1 ms; Off = 1.0 ms.
  • Off-state leakage, max(1):
    1 mA
  • Load current, min:
    1 mA
  • Continuous current per point:
    1.0 A @ 30 °C (86 °F) / 0.50 A @ 60 °C (140 °F)
  • Continuous current per module, max:
    8.0 A @ 30 °C (86 °F) / 4.0 A @ 60 °C (140 °F)
  • On-state voltage drop, max:
    1.2V @ 1.0 A
  • Surge current per point:
    3.0 A for 10 ms
  • Weight:
    0.18 kg
  • Estimated shipping dimensions:
    14.4x3.4x13cm
  • Tariff Code:
    8504402000
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Signal Logic Integrated Deployment Application

Features:

  • 8-channel DC output module with 10–50 V DC operating range
  • Fast switching performance with 1 ms ON/OFF signal delay
  • High current capability up to 1.0 A per point and 8.0 A per module
The Allen-Bradley 1746-OB8 DC Output Module is designed for SLC 500 automation systems requiring reliable digital output control. It provides 8 DC output points for field device switching applications. The Allen-Bradley 1746-OB8 is suitable for industrial control systems that demand stable and consistent output performance. It integrates into standard SLC 500 racks for modular expansion. Its design supports flexible automation configurations.

The Allen-Bradley 1746-OB8 operates within a voltage range of 10–50 V DC and supports a shared 8-point common structure. It delivers fast signal response with a maximum delay of 1 ms for both ON and OFF states. The Allen-Bradley 1746-OB8 ensures stable electrical performance with low leakage current and controlled voltage drop. It supports efficient power usage with a total consumption of 6.90 W. These characteristics make it suitable for precise industrial switching tasks.

The Allen-Bradley 1746-OB8 supports up to 1.0 A output per point at 30°C and 0.50 A at 60°C, with a maximum module current of 8.0 A. It is part of the 1746 digital I/O family, which includes multiple channel density options. Compared with higher-density modules, the Allen-Bradley 1746-OB8 provides simpler wiring and easier maintenance. It is commonly used in mid-range industrial automation systems requiring dependable DC output control. The Allen-Bradley 1746-OB8 ensures long-term operational stability in control applications.

The 1746-OB8 Allen-Bradley DC Output Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen-Bradley 1746-OB8 DC Output Module Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Allen-Bradley 1746-OB8 DC Output Module Specs

General

  • Manufacturer Allen-Bradley
  • Model 1746-OB8
  • Condition New Original ready stock
  • Product Family 1746-OA8,1746-OV8,1746-OX8
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Precise Control: Converts the electronic signals processed internally by the PLC into physical levels, precisely driving external DC loads.
  • High-Speed ​​Response: The module features extremely short switching turnaround times, meeting the demands of rapid triggering in industrial production.
  • Output Isolation: Establishes a barrier between internal sensitive circuits and external power loops to prevent electrical noise backflow.
  • Status Synchronization: Real-time feedback of the operating status of each channel via panel indicator lights facilitates intuitive monitoring by operators.
  • Rack Compatibility: Utilizes a modular plug-and-play design, easily integrating into any standard rack slot of the SLC 500 series.
  • Flexible Wiring: Equipped with removable terminal blocks, supporting rapid module replacement without altering the system wiring.
  • Architecture Compatibility: As a core component of classic control systems, it supports collaboration with various input and communication modules.
  • Stable Heat Dissipation: Its physical structure optimizes airflow within the rack, ensuring thermal stability under prolonged full-load operation.
  • Electromagnetic Actuation: Directly drives small solenoid valves, relays, and contactor coils to achieve automatic switching between pneumatic and hydraulic circuits.
  • Signal Guidance: Controls indicator lights, alarm buzzers, or status tower lights on the control panel, providing intuitive feedback on the production site.
  • Conveyor Control: Manages the start and stop of levers, brakes, and small DC motors in logistics conveyor lines.
  • Packaging Machinery: Integrated into automatic bagging or sealing equipment, precisely controlling the movement of cutting blades and feed pushers.
Description
The Allen-Bradley 1746-OB8 DC Output Module provides 8 digital DC output channels with a shared common arrangement of 8 points per common. It operates within a voltage range of 10–50 V DC (source) and is designed for SLC 500 platform integration. The Allen-Bradley 1746-OB8 is used in industrial automation systems requiring reliable discrete output control.

In terms of electrical performance, the Allen-Bradley 1746-OB8 delivers a total module power of 6.90 W, with 0.775 W per point. It supports a minimum load current of 1 mA and an off-state leakage current of up to 1 mA. The Allen-Bradley 1746-OB8 ensures stable switching with a maximum signal delay of 1 ms for ON and OFF transitions.

The Allen-Bradley 1746-OB8 provides a continuous output current of 1.0 A per point at 30°C and 0.50 A at 60°C, with a maximum module current of 8.0 A at 30°C and 4.0 A at 60°C. It also supports a surge current of 3.0 A for 10 ms per point. The Allen-Bradley 1746-OB8 maintains a maximum on-state voltage drop of 1.2 V at 1.0 A.

This module is part of the 1746 digital I/O family, which includes multiple channel configurations such as 4, 8, 16, and 32-point modules. Compared with higher-density modules in the same series, the Allen-Bradley 1746-OB8 offers simpler wiring and easier channel management. It is suitable for systems requiring medium-density DC output control.
Revisions

Revision Part #

Also known as

1746-OB8 Ser A
1746-OB8/A, Series A, Rev A
Alternative Names
1746-OB6EI 1746-OB16 1746-OB16E 1746-OBP8 1746-OBP16
Technical notes
The Allen-Bradley 1746-OB8 is an 8-point DC output module operating at 10–50 V DC with 8 points per common configuration. It provides 6.90 W total power consumption, 0.775 W per point, and supports up to 1.0 A per point at 30°C with a module maximum of 8.0 A. The Allen-Bradley 1746-OB8 features a maximum 1 ms ON/OFF signal delay, 1 mA off-state leakage, and 1.2 V maximum on-state voltage drop.
Exceptional Service

Our Mission

  • 100% Satisfaction

    We believe expertise is priceless. With over 20 years of experience, and top engineers on staff, we can help you solve or avoid problems that threaten your business.
  • Trust Guaranteed

    Not only do we have a vast inventory, our team makes sure every piece of equipment is in working condition. Your purchases are also backed by our Warranty.
  • Expertise

    Time is money, especially when your equipment is down. We work quickly to get your equipment on its way so you can get it back up and running.

FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
How fast does the Allen-Bradley 1746-OB8 respond?
It has a maximum ON and OFF delay of 1 ms. This ensures fast signal switching.
What is the output capacity of the Allen-Bradley 1746-OB8?
It supports 1.0 A per point at 30°C and 0.50 A at 60°C. The module maximum is 8.0 A.
What happens if overload occurs on the Allen-Bradley 1746-OB8?
It supports surge current up to 3.0 A for 10 ms per point. This helps handle short transient loads.
How is power consumption defined for the Allen-Bradley 1746-OB8?
It consumes 6.90 W total, with 0.775 W per point. This reflects efficient operation.