Based on the search results, the GE IS200TPROH1BBB​ is a Protective Termination Board​ designed for General Electric’s Mark VI​ and Mark VIe​ turbine control systems. Its primary role is to act as a critical interface, providing emergency overspeed protection and synchronization safety for gas and steam turbines in power generation and other heavy industries.

Here is a summary of its key specifications and functions:

🛡️ Core Function and Application

The IS200TPROH1BBB​ is a vital safety component within the GE Speedtronic turbine control family. It is engineered to terminate protective relay outputs and trip signals, ensuring secure and accurate signal transmission between turbine protection devices and the main control logic. It functions independently from the main control system to provide a reliable safety layer, capable of controlling up to three trip solenoids for emergency shutdowns in case of dangerous overspeed conditions. This makes it essential for safeguarding critical assets in applications like gas and steam turbine systems in power plants.

⚠️ Important Note on Information Accuracy

It is crucial to note that the search results contain significant contradictions. While the majority of sources consistently describe the module as a Protective Termination Board, other sources incorrectly identify it as a digital output module, a controller, or an analog I/O board for the Mark V series. These descriptions are inconsistent with the more detailed and technically specific information from supplier and manufacturer-oriented sources.

Therefore, for mission-critical applications, it is strongly recommended​ to consult official GE technical documentation for the IS200TPROH1BBB​ to obtain definitive specifications and integration guidelines.