Auxiliary Power Media

Our Bulletin 1485 Auxiliary Power Media connection devices are based on a 4–pin connector system and is used to provide 24V DC power to I/O modules and other devices separately from network power. Running separate power to these devices is typically used for I/O devices with output connections to prevent power supply interruption due to switching of outputs. However, some devices require separate auxiliary power to power them regardless of the presence of outputs.


  • Can provide power through only one pair of the four available contacts, so the other available pair can be used for single channel E-stop
  • E-stop T-ports and shorting plugs are red for easy identification
  • Many end devices, including Rockwell Automation® hardened I/O products, use a different pin numbering convention for 4-pin mini connections than that used on physical media products
  • Both conventions have the same color code going to the same spot but they use a different pin numbering designation

Additional Information

Learn more about the ArmorConnect® media options through the following overview videos.

Auxiliary Power Media

Control Power Media

Three-phase Power Media

Industrial Ethernet Media

Motor and I/O Cabling System

Product Selection


  • CSA Certified
  • UL Listed
Looking for Additional Information?

To find additional product information including CAD drawing files, 3D models and more use our Product Catalog.


Resource Publication Number Language
Connectivity & Network Media Brochure CONEC-BR001
DeviceNet Media System Technical Data 1485-TD001
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