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ControlLogix 8-point isolated digital output module, 90–146V DC, 2A per channel, individually isolated outputs.

Allen-Bradley 1756-OH8I

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Allen-Bradley 1756-OH8I | High-Voltage Digital Output Module for ControlLogix Systems

Overview

The Allen-Bradley 1756-OH8I is an 8-point isolated digital output module designed for ControlLogix systems, offering reliable control of high-voltage DC loads. Operating within a 90–146V DC voltage range, this module features individually isolated outputs, each capable of sourcing or sinking up to 2A, making it suitable for applications requiring high-voltage switching with isolation between channels.

Key Features

  • Output Type: Digital, sourcing/sinking

  • Voltage Range: 90–146V DC

  • Number of Outputs: 8 individually isolated channels

  • Current per Output: 2A

  • Isolation Voltage: 250V continuous between outputs

  • Mounting: Chassis-based, compatible with 1756 ControlLogix systems

  • Removable Terminal Blocks: Compatible with 1756-TBCH or 1756-TBS6H

Technical Specifications

  • Catalog Number: 1756-OH8I

  • Backplane Current Draw: 210 mA @ 5.1V DC

  • Power Dissipation: 1.11 W

  • Thermal Dissipation: 11.25 BTU/hr

  • Off-State Leakage Current: 1 mA max per point

  • On-State Voltage Drop: 2V DC max @ 2A

  • Minimum Load Current: 2 mA per point

  • Output Delay Time: 2 ms max (Off to On/On to Off)

  • Operating Temperature: 0–60°C (32–140°F)

  • Storage Temperature: -40–85°C (-40–185°F)

  • Relative Humidity: 5–95% non-condensing

  • Certifications: CE, UL, CSA, ATEX, IECEx, KC, RCM

  • Enclosure Type: Open-style

Applications

  • Industrial Automation: Control of high-voltage actuators, solenoids, and indicators

  • Process Control: Reliable output signaling with isolation between channels

  • Safety Systems: Applications requiring channel-to-channel isolation

  • Harsh Environments: Suitable for areas with exposure to moisture, dust, or corrosive substances

Why Choose the 1756-OH8I?

  • High-Voltage Switching: Supports 90–146V DC applications

  • Individual Channel Isolation: Enhances system safety and reliability

  • Robust Design: Built to withstand industrial environments

  • Seamless Integration: Compatible with ControlLogix systems

  • Reliable Performance: Consistent operation in demanding applications

Order Now

The Allen-Bradley 1756-OH8I output module is available for immediate shipment. 

New & Genuine Products – Factory Sealed At PLCpartssolution, all our products are 100% new, genuine, and come in original factory-sealed packaging. We guarantee authentic components that meet the highest industry standards for performance and reliability.
1-Year Warranty Included All new products sold by PLCpartssolution come with a 1-year warranty. We stand behind the quality and reliability of our parts, ensuring coverage against manufacturing defects under normal operating conditions.
Disclaimer: PLCpartssolution is an independent supplier of surplus and refurbished industrial automation products. We are not an authorized distributor, reseller, or representative of the brands listed on this website. All trademarks, brand names, and logos are the property of their respective owners. PLCpartssolution is not affiliated with, endorsed by, or approved by ABB, Fanuc, B&R, Rockwell Automation, Schneider Electric, Siemens, or any other manufacturers mentioned.

Description

Allen-Bradley 1756-OH8I | High-Voltage Digital Output Module for ControlLogix Systems

Overview

The Allen-Bradley 1756-OH8I is an 8-point isolated digital output module designed for ControlLogix systems, offering reliable control of high-voltage DC loads. Operating within a 90–146V DC voltage range, this module features individually isolated outputs, each capable of sourcing or sinking up to 2A, making it suitable for applications requiring high-voltage switching with isolation between channels.

Key Features

  • Output Type: Digital, sourcing/sinking

  • Voltage Range: 90–146V DC

  • Number of Outputs: 8 individually isolated channels

  • Current per Output: 2A

  • Isolation Voltage: 250V continuous between outputs

  • Mounting: Chassis-based, compatible with 1756 ControlLogix systems

  • Removable Terminal Blocks: Compatible with 1756-TBCH or 1756-TBS6H

Technical Specifications

  • Catalog Number: 1756-OH8I

  • Backplane Current Draw: 210 mA @ 5.1V DC

  • Power Dissipation: 1.11 W

  • Thermal Dissipation: 11.25 BTU/hr

  • Off-State Leakage Current: 1 mA max per point

  • On-State Voltage Drop: 2V DC max @ 2A

  • Minimum Load Current: 2 mA per point

  • Output Delay Time: 2 ms max (Off to On/On to Off)

  • Operating Temperature: 0–60°C (32–140°F)

  • Storage Temperature: -40–85°C (-40–185°F)

  • Relative Humidity: 5–95% non-condensing

  • Certifications: CE, UL, CSA, ATEX, IECEx, KC, RCM

  • Enclosure Type: Open-style

Applications

  • Industrial Automation: Control of high-voltage actuators, solenoids, and indicators

  • Process Control: Reliable output signaling with isolation between channels

  • Safety Systems: Applications requiring channel-to-channel isolation

  • Harsh Environments: Suitable for areas with exposure to moisture, dust, or corrosive substances

Why Choose the 1756-OH8I?

  • High-Voltage Switching: Supports 90–146V DC applications

  • Individual Channel Isolation: Enhances system safety and reliability

  • Robust Design: Built to withstand industrial environments

  • Seamless Integration: Compatible with ControlLogix systems

  • Reliable Performance: Consistent operation in demanding applications

Order Now

The Allen-Bradley 1756-OH8I output module is available for immediate shipment. 

Condition

New & Genuine Products – Factory Sealed At PLCpartssolution, all our products are 100% new, genuine, and come in original factory-sealed packaging. We guarantee authentic components that meet the highest industry standards for performance and reliability.

Warranty

1-Year Warranty Included All new products sold by PLCpartssolution come with a 1-year warranty. We stand behind the quality and reliability of our parts, ensuring coverage against manufacturing defects under normal operating conditions.

Disclaimer

Disclaimer: PLCpartssolution is an independent supplier of surplus and refurbished industrial automation products. We are not an authorized distributor, reseller, or representative of the brands listed on this website. All trademarks, brand names, and logos are the property of their respective owners. PLCpartssolution is not affiliated with, endorsed by, or approved by ABB, Fanuc, B&R, Rockwell Automation, Schneider Electric, Siemens, or any other manufacturers mentioned.
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