Siemens | Simatic S5 6ES5526-3LA21

Siemens Simatic S5 Communications Processor (6ES5526-3LA21).

Stock Status
Available Now

Warranty

DCS Center Warranty Included

Shipping

Worldwide shipping via DHL, UPS, and Fedex

Repair Time

3-5 weeks. Rush Repair options are available.

Product Details

  • Part Number 1 6ES5526-3LA21

Product Description

Within the Simatic S5 product line, Siemens 6ES5526-3LA21 serves as a Communications Processor.

From a maintenance perspective, this type of module provides control execution within the automation architecture. Its responsibilities can include logic processing, data handling, communications, and coordination of connected subsystem resources. The product remains part of the broader control and signal-handling arrangement.

In a SIMATIC S5 system, module selection is governed by the controller family, rack arrangement, electrical interface, and configured program. The exact article number should be matched before installation. The plant's maintenance records should support final product selection.

In the signal path, this approach helps preserve the intended system function while keeping selection aligned with the documented ratings, capacity, and compatibility requirements. This helps preserve the function assigned to the installed control node.

Product Documentation

  • Common Part Typos 6ES5526-3LA2I, 6ES5526-3LA2l, 6ES55263LA21, 6ES55263LA2I, 6ES55263LA2l

Reviews

5.0 Rating

"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

"Ahoy! We are extremely pleased with the cost effective and rapid repair services provided DCS Center. Even though the ship is only 12 years old, many of the..."

- Birdman Chief Engr., United States

"Thank you very much for your prompt and professional assistance!"

- Brent M., 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

"Frank your customer service has been excellent, you go out of your way to help and support. Your response and feedback is exceptional, its a pleaure to engage..."

- Selva Moodley, South Africa

"Been doing business with the DCS Center for years. Quick responses, solid repairs and excellent follow-up support!"

- Alex L., United States

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DCS 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.

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Siemens 6ES55263LA21 Simatic S5 PLCs PLC Modules
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