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The product identified as ABB TU921N is a Redundant Termination Unit in the Advant 800xA hardware family.
Within the process-control arrangement, termination hardware provides the organized transition between field wiring and associated I/O electronics. It supports installation, testing, and maintenance by keeping external connections aligned with the intended module interface. System drawings should be consulted before replacement.
ABB Advant and System 800xA environments combine control, I/O, communication, and operator resources. This product supports the hardware function identified by its description within the installed system. The system's documented hardware assignment should guide placement.
For maintenance or replacement work, the exact module designation should be checked against the installed hardware, wiring records, and control-system documentation before the component is placed into service. The installed revision should be confirmed before the product is applied.
Alt# 3KDE175113L9210
"Dear Frank and James, This morning we tested the "new" IEPAF01 cards. Everything is fine!!! I want to express my thanks and my personal acknowledgement on how you..."
- Carmelo I., Italy"We received the cables Frank. They are in great shape, including the connectors. Thanks for the good service."
- Larry A., United States"Been doing business with the DCS Center for years. Quick responses, solid repairs and excellent follow-up support!"
- Alex L., United States"Frank, we are very happy with your service. Our test mechanic has checked the controllers, they all are good!"
- Tony N., United States"James is the BEST! He makes sure all your questions are answered and that you're happy with your order before it's shipped. My part arrived right on time...."
- Katie, United States"DCS Center provides phenomenal service. They are prompt with a response. They have helped me numerous times with surplus and new items. I look forward to a long..."
- Tonya M., United StatesDCS Center sells new surplus and reconditioned products. This website is not sanctioned or approved by any manufacturer or tradename listed. DCS Center is not an authorized distributor or representative for the listed manufacturers. Designated trademarks, brand names and brands appearing herein are the property of their respective owners.
Keep your operation moving with fast access to the DCS and PLC components you need. Whether you are searching for a hard-to-find part, need a repair, or want help identifying the right replacement, DCS Center is here to simplify the process and minimize downtime.
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