ABB TU851 Extended Module Termination Unit

Description

The ABB TU851 Extended Module Termination Unit is an imported component belonging to the ABB S800 I/O product family, a distributed modular process I/O system designed for industrial automation applications. As a fixed-configuration termination unit, it is not customizable, and serves as a dedicated interface for connecting I/O modules to field devices. It is part of a full lineup of compatible termination units, including the TU830V1 and TU852, which share similar modular, field-mountable designs.

Optimized for demanding industrial environments, the TU851 supports seamless integration with ABB and third-party process controllers via standard field buses, reducing overall wiring costs by enabling installation adjacent to sensors and actuators. It is engineered for high reliability, with a rugged build suitable for use in large industrial production facilities, oil refining plants, cement and mining operations, and paper and shipbuilding industries. As part of the S800 I/O system, it complements features like hot-swappable modules, online reconfiguration, and optional redundancy, helping to maximize operational uptime and production efficiency.