IS200TBCIH3C: the C-Revision Contact Input Board

The IS200TBCIH3C is a GE Mark VI Speedtronic contact input terminal board (TBCI) offered here as new-surplus, open-box stock. As a TBCI it performs the same core job as the rest of the family — landing up to 24 dry contact inputs from the field and conditioning them for the control — but the letter C in its number carries real significance for anyone on the newer Mark VIe platform, and it is worth understanding before you buy.

Why the C Version Matters for Mark VIe

GE documents the TBCI B and C hardware as functionally identical, yet they are not always mechanically interchangeable. In a Mark VIe architecture the discrete-input work is done by PDIA I/O packs that plug directly onto the terminal board, and GE specifies the C version so that the JT1 connector aligns correctly with the mechanical support of the I/O pack. This IS200TBCIH3C is a C-revision board, which makes it the right family member when PDIA packs mount straight onto the termination. In a classic Mark VI (VME) cabinet, where the board is cabled to a VCCC or VCRC processor instead, the C revision works equally well. If you are consolidating spares across both platforms, the C-version board is the more flexible one to stock.

The Board’s Job: 24 Dry Contacts, Terminated and Filtered

Two barrier-type terminal blocks — unbolted with two screws for service, each terminal accepting up to #12 AWG wire — land 24 dry contact inputs. The board provides the DC excitation that wets those contacts and includes noise-suppression circuitry that rejects surge and high-frequency interference on long cable runs. One, two, or three PDIA packs (or, in Mark VI, cables to the VME processor) serve the point depending on whether it is wired simplex or in triple-redundant <R>/<S>/<T> form.

Before You Replace: Where TBCI Faults Really Come From

Even when fitting a fresh new-surplus board, confirm the termination is the actual problem first. Because the TBCI leans passive, a single dead point usually means a field contact, a loose terminal, or a wet junction; a whole group failing usually means the PDIA pack or VME processor and its cable; every point reading alike usually means the excitation supply; and post-maintenance intermittents usually mean a connector. A board earns replacement when it shows physical damage — cracked blocks, corroded or burnt terminals, or heat around the suppression parts.

Decoding IS200TBCIH3CCD

Segment by segment: IS200 is the Mark VI assembly series, TBCI the contact-input function, H3 the hardware group, C the functional revision (the Mark VIe-friendly one described above), and the closing CD the board artwork revision on the full number IS200TBCIH3CCD. Match the entire string when you order so the group, revision and connector keying line up with your installation. See the GE Speedtronic Part Number Decoder for a full walk-through, and the GE Mark VI IS200 Boards collection for companion terminations.

New Surplus, Open Box — and How to Quote It

This unit is new-surplus stock in an opened box, carrying the warranty shown below. To quote it accurately for your site, tell us the full part number (IS200TBCIH3CCD), the revision on the label, a photo of the label, your turbine model and whether the board serves a Mark VI or Mark VIe control, the quantity, and your required delivery date. The Mark V vs Mark VI: DS200 to IS200 guide is useful if you are moving off older DS200 hardware.

Request a Quote on the IS200TBCIH3C

We ship the IS200TBCIH3C worldwide on DDP terms, answer quote requests within 24 hours, and accept purchase orders from qualified buyers. Press Request a Quote with your quantity and we will confirm this open-box unit’s availability and lead time.

This Open-Box IS200TBCIH3CCD

General Information about the Product
Part Number	IS200TBCIH3C Mark VI IS200
Description	GE General Electric IS200TBCIH3C IS200TBCIH3CCD Speedtronic PBC Board Mark VI
Condition	newSurplusNoBox New Surplus Open Box. With 1 Year Warranty