The GE IS200TBCIH1CCD is a contact input terminal board designed for GE Mark VI Speedtronic turbine control systems. It interfaces external dry-contact signals with compatible control-system I/O hardware. The board helps the controller monitor the status of switches, relay contacts, and other discrete field devices.
Its group-isolation design supports industrial signal acquisition in turbine control environments. Depending on the system configuration, the board can interface with compatible VTCC, VCRC, or PDIA I/O hardware.
| Parameter | Description |
|---|---|
| Manufacturer | General Electric (GE) |
| Model | IS200TBCIH1CCD |
| Product Type | Contact Input Terminal Board |
| Product Family | Mark VI / compatible Mark VIe systems |
| Input Channels | 24 dry-contact inputs |
| Nominal Contact Excitation | 125 VDC floating |
| Excitation Range | 100–145 VDC |
| Field Connections | Two barrier-type terminal blocks |
| Cable Interface | Three 37-pin D-shell connectors |
The IS200TBCIH1CCD is used in gas turbine control, power generation, and industrial automation systems. It can monitor auxiliary equipment status, switch positions, relay contacts, and other discrete signals used by turbine control logic.
Verify the board revision, I/O interface, and contact excitation voltage before installation. Secure all field wiring and inspect terminal blocks and connectors for damage. During troubleshooting, check the field contact, wiring continuity, excitation supply, and controller diagnostics.

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