The IS200TREGH1BDC is an emergency trip terminal board manufactured by General Electric and belongs to the VIe family for gas turbine control systems.

It includes two voltage transformers (PTS) for bus and generator voltage inputs, and conditional speed signal inputs for I/O packets. In addition, it has twelve relays, each with a silver metal wire at the top.

The relays are white and black, six in each row, a total of two rows. The terminal board also has a DC-37 pin connector to connect a cable to the terminal board to serve as a backup trip relay.

In Mark VIe or Mark VleS control systems, backup protection is formed by SPRO and PPRO/YPRO by wiring to the relay board. PTUR or YTUR, TTUR, and main trip relay terminal boards provide primary protection.

When installed, it is carried on a metal plate carrier mounted on a DIN rail, or it can be mounted on a metal plate assembly bolted to the panel.