Factory-Sealed IS200TREGH2B for a Protection Spare

Held here as new-surplus stock in its original factory packaging, this IS200TREGH2B is the 24 V dc turbine emergency trip terminal board for the GE Speedtronic Mark VI protection system — the kind of unused spare many plants keep on the shelf for a board that sits in the trip path. This page is written to help you confirm the right part and understand where it fits; the protective settings and test steps are left to GE’s manual and your site’s procedures, as they should be for any emergency-trip hardware.

Mark VI or Mark VIe: How the TREG Is Driven

The same TREG terminal board is used across two control generations, and knowing which one you have helps you order and troubleshoot correctly. In a Mark VI cabinet the board is driven by the VPRO emergency-trip/protection processor, connected through cables with molded plugs. In a Mark VIe cabinet the board is instead managed by a PPRO I/O pack that seats on the SPRO board, again via molded-plug cabling. Either way, the terminal board is the passive termination; the protection module carries the logic and the diagnostics. The JX1, JY1 and JZ1 connectors each hold an ID device the module reads to confirm board type, revision and plug location.

The 24 V dc Group and Why It Must Match

This board belongs to the H2 group, which GE documents as the 24 V dc application variant of the emergency-trip board — otherwise equivalent to the 125 V dc H1B. Because the H1 and H2 groups are built for different circuit voltages, they are not interchangeable, and the group has to match your protection circuit. Read the number as IS200 (Mark VI series), TREG (emergency-trip function), H2 (24 V dc group), B (functional revision) and DC (artwork revision) on the full IS200TREGH2BDC. The GE Speedtronic Part Number Decoder lays out the fields.

What Fails, and What Usually Does Not

On the emergency-trip circuit the terminal board is seldom the failing part. Trip-circuit diagnostics are produced by the protection module, so read the VPRO or PPRO/SPRO fault log before you touch the board. Hardware-incompatibility faults usually trace to an ID or revision mismatch at a JX1/JY1/JZ1 plug or a marginal cable. Emergency-stop and interlock issues appear at the board but originate in the field. The board itself is the part to change out only when it shows physical damage such as cracked blocks, corroded terminals or a damaged connector.

Emergency-Trip Role, Kept to Identification

Functionally, the board lands the emergency-stop, trip-interlock and trip-solenoid wiring and provides the positive side of the solenoid DC power, paired with the TRPG board on the negative side and the TPRO board in the same protection group. Beyond that identification-level description we do not publish trip setpoints, the voting arrangement, or test sequences; those live in GEH-6421 (Mark VI System Guide) and your plant procedures. Related protection and control boards are collected under GE Speedtronic Turbine Control Boards.

Sourcing This New-Surplus TREG

To quote this factory-packaged board, send the complete part number with suffix (IS200TREGH2BDC), the label revision and a photo, your turbine model and control generation (Mark VI or Mark VIe), the protection circuit voltage, whether the layout is simplex or redundant, the quantity, and your timing.

Request a Quote on This TREG Spare

We ship the IS200TREGH2B worldwide on DDP terms, quote within 24 hours, and accept purchase orders from qualified plants and integrators. Use Request a Quote with your quantity and we will confirm this new-surplus unit’s availability and lead time.

IS200TREGH2BDC New-Surplus Reference

General Information about the Product
Part Number	IS200TREGH2B Mark VI IS200
Description	IS200TREGH2B by GE IS200TREGH2BDC Emergency Trip Board New Surplus Factory Pkg
Condition	newSurplusFactoryPackage With 1 Year Warranty