The ABB TUS810 (3BSE078716R1) is a high-quality Modular Terminal Unit (MTU) designed for use in ABB’s Symphony Plus and System 800xA distributed control systems (DCS). This terminal unit acts as the physical interface between field wiring and I/O modules, providing secure, organized, and reliable signal termination.

As a member of ABB’s field termination assembly family, the TUS810 ensures simplified installation, fast maintenance, and robust mechanical connection in process control environments. It offers modularity, DIN rail mounting, and compatibility with a wide range of I/O signal types. Its compact footprint and standardized layout help minimize control cabinet space while increasing wiring efficiency.

Key Features

• DIN-rail mounted terminal unit for field signal connection

• Compatible with multiple ABB I/O modules and adapters

• Modular design enables easy installation and replacement

• Clearly labeled screw terminals for fast and secure wiring

• Supports both analog and digital signal termination

• Standardized wiring layout reduces commissioning time

• Supports TUV-certified safety applications

• High vibration and electrical noise immunity

• Field-proven for use in harsh industrial environments

• Ideal for System 800xA, Symphony Plus, and Freelance DCS

Technical Specifications

Industry Applications

The ABB TUS810 is widely used in industries requiring secure and modular field signal terminations for large-scale process automation:

• Oil & Gas: I/O wiring interface for control and safety systems on drilling platforms and refineries

• Power Generation: Reliable field signal connectivity in turbine control and plant automation

• Water Treatment: Field device signal termination in remote and central control stations

• Chemical & Petrochemical: Harsh environment applications with safety and redundancy requirements

• Pharmaceutical: Cleanroom-compatible wiring termination solutions

• Pulp & Paper: Field connectivity for sensors and actuators in large-scale mills

Product Advantages

• Field-proven reliability in industrial and process control systems

• Flexible signal support: handles both digital and analog field devices

• Reduces wiring errors with labeled terminals and structured layout

• Quick installation and changeover with DIN-rail modular form

• Compatible with ABB I/O families, reducing inventory complexity

• Compact design helps save valuable cabinet space

• Excellent thermal, mechanical, and chemical resistance

• Maintenance-friendly—wires can be quickly removed or added

• Supports hot-swap I/O modules when used with corresponding ABB systems

• Certified for safety-critical installations

Frequently Asked Questions (FAQ)

1. What is the main function of the ABB TUS810?

It serves as a modular terminal base for connecting field I/O wiring to ABB control systems.

2. Which ABB systems are compatible with the TUS810?

System 800xA, Symphony Plus, and Freelance DCS platforms.

3. Is the unit active or passive?

It is a passive terminal base, used solely for wiring and mechanical mounting.

4. How is it mounted?

It mounts on a standard 35 mm DIN rail.

5. How many terminals are available?

Typically, 32 terminal points for channel connections (varies by I/O type).

6. Does it support analog and digital signals?

Yes, it can be used with both analog and digital I/O modules.

7. Can I use it in safety-certified systems?

Yes, it is TUV-certified and suitable for safety-related control environments.

8. What kind of wire size does it accept?

It accepts up to 2.5 mm² single-core or stranded conductors.

9. Are there status indicators?

No. It’s a passive component without LED status indicators.

10. Can the unit be reused in case of system upgrades?

Yes, the terminal unit is modular and reusable with compatible ABB systems.