ABB TU811 Overview
 

Product Positioning:

The ABB TU811 is a compact Module Terminal Unit (MTU) within the Advant 800xA (S800 I/O) system. It provides reliable physical wiring points for field devices and ensures secure signal connections with S800 I/O modules.

Main Technical Features

Compact Structure:
Designed for installation in confined control cabinets or distribution panels, with dimensions of approximately 64 mm × 170 mm × 58.5 mm and a weight of about 0.2 kg.

Mounting Method:
Standard 35 mm DIN rail mounting for easy and fast installation.

Connection Type:
Equipped with screw terminals (rated 250 V), providing 8 signal terminals for digital input/output, analog signals, or fieldbus communication.

Electrical Specifications:
Rated voltage 250 V; operating temperature range –20 °C to +60 °C; protection class IP20, suitable for industrial environments.

Compatibility:
Specially designed for the ABB S800 I/O series, compatible with other terminal units such as TU810, TU812, and TU830, forming a complete and flexible I/O system.

Typical Application Scenarios

Process Control:
Connection of field measurement signals such as temperature, pressure, and flow.

Discrete Control:
Field wiring for digital (on/off) input and output signals.

Building and Energy Systems:
Applied in building automation, power distribution monitoring, petrochemical, and other industrial automation projects.

Advantages

High Reliability:
Provides robust mechanical connections and electrical isolation to reduce on-site noise interference.

Modular Design:
Facilitates easy system expansion, maintenance, and quick module replacement or upgrade.

Adaptability to Harsh Environments:
Built with corrosion-resistant materials and wide operating temperature tolerance for demanding industrial conditions.

Summary

The ABB TU811 is a compact Module Terminal Unit designed for the ABB Advant 800xA (S800 I/O) system. Featuring 8 signal terminals, DIN rail installation, and IP20 protection, it ensures reliable field wiring and signal acquisition in process control, discrete control, and building/energy automation applications.