IS220PTURH1A is a Primary Turbine Specific Primary Trip Pack and is part of the General Electric Speedtronic Mark VIe gas turbine control. This component connects a turbine control terminal board to one or two Ethernet networks via an electrical interface. This pack's outputs are routed through a DC-62 pin connection that connects to a terminal board. The IS220PTURH1A has a black outside shell with air circulation holes. This case contains various LED indicators on the front, as well as an IR receiver (infrared port.) This bundle does not use this port. A CPU board, a second board dedicated to turbine control, and an analog acquisition auxiliary board are all housed within this case.