ABB | Advant 800xA TU921B

Product Details

• Part Number 1 TU921B

Product Description

TU921B is identified by ABB as a Redundant Termination Unit within the Advant 800xA family.

For replacement planning, this type of unit concentrates field connections at a defined termination point before signals reach the related control-system electronics. Correct pairing with the associated I/O hardware is essential. The original equipment schedule should guide compatibility review.

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 plant's maintenance records should support final product selection.

When this product is used for lifecycle support, technicians should confirm the installed revision, connection arrangement, and system assignment rather than assuming interchangeability with a similarly named module. Ratings and capacity should be verified against the exact model documentation.

Product Documentation

• Part Notes

  Alt# 3KDE175112L9210

• Common Part Typos TU92IB, TU92lB

Reviews

5.0 Rating

"DCS CENTER Really saved the day! I had the parts I needed in my hands the day after ordering ( I'm in Toronto Canada ). I highly recommend..."

- Steven T., United States

"Thank you for your help in finding new surplus parts for our ABB system. Y'all always do a great job for us. We are happy to buy from..."

- Amanda, United States

"Hey Frank, thank you for your great service and competitive pricing. We will definitely be using you again in the future."

- Patrick O., United States

"I would like to say thanks a lot for all. I’ve had good service with you and it’s a pleasure"

- Audrey, Québec, Canada

"Hi Frank and thank you for your quick response - good service. We look forward to doing more business with DCS"

- Serge, 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