Overview

The ABB TU833 is a Module Termination Unit (MTU) within ABB’s System 800xA and S800 I/O platform. It serves as the physical interface between field wiring and I/O modules, providing signal distribution, fuse protection, and reliable communication.

The TU833 supports redundant configurations, making it suitable for mission-critical systems where continuous availability is essential. DIN-rail mounting with mechanical latching simplifies installation, reduces wiring complexity, and facilitates maintenance.

Technical Data

Typical Applications

• Power generation: Wiring and fuse protection for turbine and excitation control signals.

• Process industries: Safe signal distribution in chemical, oil & gas, and pharmaceutical plants.

• Water treatment facilities: Connecting pumps, mixers, and monitoring equipment to distributed I/O.

• Manufacturing automation: Supporting robotic systems and production lines with reliable I/O connections.

• Infrastructure systems: Building automation and utility monitoring networks.

Example:
In a refinery, the TU833 ensures redundant I/O modules receive properly fused signals, reducing downtime and improving system reliability.

FAQ

Q1: What is the ABB TU833 used for?
It is a termination unit connecting field signals to ABB S800 I/O modules with fuse protection.

Q2: How many channels does it support?
Up to 16 I/O channels, divided into two isolated groups.

Q3: Does it provide redundancy?
Yes, it supports redundant configurations for high-availability systems.

Q4: What is the maximum rated current per channel?
Each channel can handle up to 2 A.

Q5: How is it installed?
DIN-rail mounted with a mechanical latch for secure and easy installation.