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GE IS200SPROH1AAB MRP663860 | Mark VI PPRO Protection Terminal Board
The GE IS200SPROH1AAB, associated with GE MRP number MRP663860, is an SPRO terminal board used in GE Mark VI and Mark VIe turbine protection applications. Available technical listings identify it as a PPRO backup protection terminal board designed to interface with the PPRO overspeed-protection I/O pack.
The board supports the independent emergency overspeed and synchronous-protection system by interfacing speed pickup signals, generator or bus voltage sampling, and protection-trip wiring. It may be used in gas-turbine, steam-turbine, thermal-power, and cogeneration control cabinets.
Because online supplier descriptions contain conflicting specifications, electrical ratings and detailed channel information should be verified against the actual board label, GE drawings, and the installed PPRO system before publication or replacement.
Technical Details
Item Description
Manufacturer General Electric
Part number IS200SPROH1AAB
GE MRP number MRP663860
Board designation SPRO
Product type PPRO backup protection terminal board
System family GE Mark VI / Mark VIe
Associated module PPRO overspeed-protection I/O pack
Application Turbine overspeed and backup protection
Mounting Rack, panel, or DIN-rail carrier depending on assembly
Condition New surplus, refurbished, rebuilt, or used
Compatibility Confirm with the PPRO pack, rack, wiring, and system revision
Main Functions
Interfaces with the GE PPRO overspeed-protection I/O pack.
Conditions speed signals from MPU or magnetic pickup sensors.
Supports generator-voltage and bus-voltage sampling where applicable.
Provides terminal connections for protection and trip circuits.
Supports independent backup protection functions in GE turbine-control systems.
Designed for maintenance and replacement of legacy Mark VI or Mark VIe protection hardware.
Some listings describe the board as a PPRO terminal board with direct PPRO stack mounting, rear backplane connection, trip-relay wiring, and onboard isolation transformers. Verify these features on the specific revision before treating them as guaranteed specifications.
Associated Hardware
The IS200SPROH1AAB is commonly associated with:
GE PPROH1A overspeed-protection I/O pack.
MPU or magnetic pickup speed sensors.
Generator and bus voltage transformer circuits.
Backup trip-relay wiring.
GE Mark VI or Mark VIe protection racks and backplanes.
The board and PPRO I/O pack should be checked as a matched system. A visually similar SPRO or PPRO terminal board may use different connectors, signal conditioning, or protection wiring.
Replacement Guide
Before replacing IS200SPROH1AAB MRP663860, verify:
The complete part number and GE MRP number.
Board revision, artwork number, and serial-number label.
The installed PPRO I/O pack model.
MPU input wiring and speed-signal configuration.
Generator and bus voltage transformer connections.
Trip-relay cable and terminal-block arrangement.
Rack, panel, or DIN-rail mounting method.
Protection-system configuration and testing requirements.
Physical condition of terminals, connectors, transformers, and PCB components.
Do not use a different suffix as a direct replacement without checking the system drawings. For example, IS200SPROH1ADD is also listed as a backup protection terminal board, but the suffix differs and compatibility must be confirmed.
Important Specification Note
Search results include incompatible claims that describe this model as an analog-output board, servo-valve termination card, simplex analog-input board, or general PLC control module. These descriptions conflict with the more consistent SPRO/PPRO backup-protection references.
For an accurate product page, use the following conservative description:
GE IS200SPROH1AAB MRP663860 is an SPRO backup protection terminal board for GE Mark VI and Mark VIe turbine protection systems. It interfaces with the PPRO overspeed-protection I/O pack and associated speed, voltage, and trip circuits.
Avoid publishing exact voltage, current, channel count, accuracy, or communication-protocol data unless verified from GE documentation.
Ordering Information
Include the following information in a quotation request:
Complete part number: IS200SPROH1AAB.
GE MRP number: MRP663860.
Required quantity.
Preferred condition: new, surplus, refurbished, rebuilt, or used.
PPRO I/O pack model.
Photos of the board label, terminal blocks, connectors, and transformers.
Test report and warranty requirements.
Destination country and delivery terms.
A high-quality product listing should show real product photos, stock condition, testing status, warranty, packaging, and estimated delivery time.
Frequently Asked Questions
What is GE ?
GE IS200SPROH1AAB is an SPRO backup protection terminal board associated with GE Mark VI and Mark VIe turbine protection systems.
What is MRP663860?
MRP663860 is the GE order or inventory reference associated with the IS200SPROH1AAB board in supplier listings.
What is the PPRO function?
PPRO refers to the programmable protection and overspeed-protection interface used in GE turbine protection architectures. The SPRO board provides the terminal and signal-interface functions for the associated PPRO I/O pack.
Is IS200SPROH1AAB a normal analog-output board?
It should not be described that way without specific documentation. The more consistent references identify it as a PPRO backup-protection terminal board.
Is it compatible with IS200SPROH1ADD?
Not automatically. The different suffix may indicate a different hardware or terminal configuration. Confirm the installed system and GE documentation before substitution.
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