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1756-OB8EI Allen-Bradley
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1756-OB8EI Allen-Bradley

$400.00 - $767.25
$400.00
$400.00 - $767.25
$400.00
Surplus - Tested (With Warranty)
Need a Specific Revision?
$400.00
5 in stock
New / Open-Box Surplus
Need a Specific Revision?
$767.25
2 in stock
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Product Details

Description · Specifications · Product Overview

Specifications provided for reference. Verify critical details against official manufacturer documentation before installation.

Product Overview

The 1756-OB8EI is an Allen-Bradley ControlLogix digital output module providing eight electronically fused and individually isolated DC output channels. Designed for cabinet-based installation within a ControlLogix rack, the module interfaces with a controller via the backplane to switch external loads in industrial automation systems. Typical applications include machine control, process shutdown, motor actuation, and supervisory control tasks where point-level short-circuit protection and electrical isolation are required.

Best Suited For

  • ControlLogix-based discrete load switching
  • Per-point short-circuit protection needs
  • Integration into ControlLogix systems with isolated outputs
  • Replacement or expansion of existing OB8EI modules
Channels
8 outputs
Output current per point (max)
2 A
Operating voltage range
10…30 V DC
Isolation voltage
250 V continuous
Power dissipation (max)
4.7 W @ 60 °C

Technical Specifications

I/O & Electrical

Operating voltage range
10…30 V DC
Output current per point (max)
2 A @ 60 °C
Output current per module (max)
10 A @ 60 °C; 16 A @ 55 °C (linear derate)
Surge current per point
4 A for 10 ms, repeatable every 2 s
Off-state leakage current (max)
1 mA per point
On-state voltage drop (max)
1.2 V DC @ 2 A
Load current minimum
3 mA

Communication & Power

Backplane current @ 5.1 V
250 mA
Backplane current @ 24 V
2 mA

Physical & Environmental

Power dissipation (max)
4.7 W @ 60 °C
Thermal dissipation
16.03 BTU/hour
Operating temperature
0…60 °C (32…140 °F)
Non-operating temperature
-40…+85 °C (-40…+185 °F)
Enclosure type
None (open-style)
Slot width
1

Certifications

Refer to Rockwell Automation site for certifications such as CE, UL, IECEx, ATEX, RCM, China CCC, UK CA, Eurasian Economic Community, as of May 2026.

1-Year Warranty

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USA Stock

Sourced and shipped from Texas, USA. Never anonymous overseas marketplace stock.

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Rockwell Automation documentation

Access official manuals, datasheets, and lifecycle information for this part directly from Rockwell Automation.

Visit RockwellAutomation.com →

Must Read: Disclaimer

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