The ABB TB521-ETH is a high-performance CPU terminal base designed for the AC500 V2 platform, offering reliable and flexible communication options for diverse industrial automation applications. This terminal base provides two slots for communication modules, allowing for seamless integration into existing and future systems. The TB521-ETH provides a robust and adaptable solution for your PLC communication needs. Its dual communication module slots offer flexibility for system expansion, while the integrated Ethernet and serial interfaces ensure compatibility with a wide range of industrial devices. This CPU base is built to ABB's high standards for reliability and performance, ensuring stable operation in demanding industrial environments.
Key Features
Two slots for communication modules
Integrated Ethernet interface
Two serial interfaces (RS232/RS485)
Compatible with AC500 V2 platform
Compact and robust design
Applications
Industrial automation and control systems
Process control and monitoring
Machine control and automation
Building automation systems
Frequently Asked Questions
Please refer to the ABB AC500 V2 documentation for a complete list of compatible communication modules.
The operating temperature range can be found in the product datasheet available for download on our website.
Profibus support can be achieved via compatible communication modules. Check the ABB documentation for specifics.
Technical Specifications
Part Number
1SAP112100R0270
Height
135 mm
Width
123.5 mm
Depth
28 mm
Weight
0.186 kg
Part Number
1SAP112100R0270
Height
135 mm
Width
123.5 mm
Depth
28 mm
Weight
0.186 kg
No documents available for this product.
Delivery
We offer fast UK delivery on all stocked items. Orders placed before 3pm Monday to Friday are eligible for next-day delivery.
Standard delivery: 2–3 working days
Next-day delivery: available on in-stock items when ordered before 3pm
Express options available — contact us for details
Returns
If you need to return an item, please contact our sales team within 30 days of receipt. Items must be returned unused in their original packaging.
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
Priority sourcing and supply support
Flexible payment terms for qualifying organisations
Support for engineering, maintenance, and operations
500 +
Stock lines ready to ship
1,000 +
Same day dispatches
3500 +
Customers supported
28
Trusted Manfacturers
● frequently asked questions
Common questions about our products and support
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
What product ranges do you supply
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Can you help specify the correct part?
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...