The Moxa TCC-100I is an RS-232 to RS-422/485 serial converter with optical isolation—ideal when you’re connecting equipment across different ground potentials or electrically noisy environments. If you’ve ever seen a “mystery” serial issue disappear after adding isolation, this is that kind of product.

Why We Love This Product

• RS-232 to RS-422/485 conversion for integrating legacy devices into industrial serial networks
• Optical isolation helps protect equipment and improve stability in harsh electrical environments
• Great fit for permanent installations where reliability beats “it usually works”
• Strong choice for plant floors, utilities, and any site with grounding complexity

How Our Customers Use It

• Connecting RS-232 devices into RS-485 networks across long cable runs
• Reducing serial comms dropouts caused by noise, ground loops, or site-to-site differences
• Protecting PLC/RTU serial ports during retrofits and brownfield upgrades
• Stabilising comms in electrically “messy” environments like switchrooms and heavy equipment zones

Choosing Tips

• Choose TCC-100I when isolation is a must (different grounds, noisy environments, or sensitive equipment)
• If you don’t need isolation and just want basic conversion, a non-isolated converter can be sufficient
• If your primary goal is ESD protection from frequent handling, choose a model that specifically emphasises ESD protection