GE IS230SNCIH6A | Mark VIe Contact Input Module

• Brand: GE
• Full Model Number: IS230SNCIH6A
• Lifecycle Status: Obsolete / legacy Mark VIe component
• Core Function: Simplex contact input / discrete input module
• Technical Specs: 24 contact inputs; 125 VDC nominal excitation; 50% excitation threshold
• Architecture: Simplex I/O pack; PDIA I/O pack; IS200STCI terminal board
• Operating Range: -30°C to +65°C for the I/O pack
• Stock & Condition: New surplus / unused inventory; live stock allocation before PO
• Dispatch: Same-day or expedited shipping subject to order cut-off and final stock confirmation

The GE documentation trail identifies IS230SNCIH6A as the 125 VDC simplex version using one PDIA I/O pack with an IS200STCI terminal board. GE lifecycle material also lists this catalog number among Mark VIe components affected by obsolete electronics technology.

Obsolescence & Supply Chain Deep Dive

When a Mark VIe cabinet reaches an electronics-obsolescence point, the problem is not simply finding a module with the same physical footprint. The IS230SNCIH6A is tied to a specific I/O architecture: one PDIA I/O pack, an IS200STCI terminal board, simplex operation, and 125 VDC contact excitation. That combination matters during emergency replacement because the closely related H2A and H4A variants use different nominal excitation levels. The GE lifecycle notice specifically maps IS230SNCIH6A to the IS200STCIH6A terminal-board assembly and identifies the catalog as a 125 VDC discrete-input configuration.

For a plant already using the same catalog number, replacing the failed assembly can avoid a much larger control-system migration. The economic case is primarily avoided downtime, engineering rework, cabinet rewiring, application testing, and procurement delay rather than the module price alone. With 24 contact inputs and onboard signal filtering, the module is intended for discrete field-state acquisition rather than analog measurement. A stocked surplus replacement can therefore preserve the existing I/O design while the plant plans a controlled modernization later (subject to firmware, terminal-board, and cabinet verification).

Compatibility & Replacement Matrix

Field Traps — Watch Out

Excitation-voltage mismatch: is the 125 VDC version. Do not substitute the 24 VDC or 48 VDC variants simply because the catalog names appear similar. The published GE component mapping distinguishes these versions by terminal-board part number and input voltage.

I/O pack identification: Mark VIe I/O packs carry hardware catalog, hardware revision, serial, firmware catalog, and firmware-version information. The I/O pack also performs identification checks against the connected terminal board, so a visually similar assembly is not sufficient approval for installation.

Quality Assurance & Testing SOP

Each supplied should pass a documented incoming and pre-shipment inspection sequence before release:

• OEM anti-counterfeit visual inspection: catalog number, revision markings, serial/barcode data, labels, connector condition, PCB workmanship, and enclosure condition checked against the expected GE assembly configuration.
• Terminal-board verification: confirm the assembly corresponds to the IS200STCI / configuration and that the PDIA I/O pack interface is physically correct.
• Power-on self-test (POST): energize the assembly with controlled test power and check expected power, processor, Ethernet, RUN, and fault indications according to the available test configuration.
• I/O functional test: simulate dry-contact transitions across representative input points and verify ON/OFF state recognition, signal stability, and fault response.
• Input threshold test: verify switching behavior against the specified excitation arrangement; the published specification gives a threshold of approximately 50% of excitation voltage.
• Communication/diagnostic test: confirm I/O pack identification and controller-side diagnostic visibility where the available Mark VIe test rack permits.
• Thermal observation: operate the assembly long enough to identify abnormal temperature rise, intermittent faults, or communication instability.
• Final traceability record: photograph labels and serial information, record test results, and retain the inspection record with the shipment file.

For surplus material, the objective is functional evidence, not a visual pass alone.

GE IS230SNCIH6A

Procurement & Lifecycle FAQ

Is the GE genuinely available, and when can emergency shipping start?
New-surplus and unused inventory is traded in the replacement-parts market, but live warehouse quantity changes quickly. Emergency orders should be released only after serial/catalog verification and physical stock confirmation. Same-day dispatch can be arranged when the unit is physically allocated and the order clears the supplier’s shipping cut-off.

How do you verify the condition and authenticity of an obsolete ?
The inspection should cover the GE catalog number, revision and serial markings, physical assembly configuration, terminal-board identity, I/O pack interface, connectors, and functional test results. The is documented as a Mark VIe contact-input assembly using an IS200STCI terminal board and PDIA I/O pack.

Could firmware or hardware compatibility stop the replacement from working?
Yes. The Mark VIe I/O pack carries hardware and firmware identification data, and the pack checks the connected terminal board. Before issuing the PO, engineers should compare the existing unit’s catalog number, hardware revision, firmware revision, terminal-board part number, and controller configuration.

Can I replace an H2A or H4A version with the H6A?
Not as an automatic substitution. The H6A is associated with 125 VDC contact excitation, while the GE component mapping identifies H2A as 24 VDC and H4A as 48 VDC. Field voltage and terminal-board configuration must be checked before approving any cross-variant replacement.

What warranty and return terms apply to a surplus unit?
The commercial warranty should be stated on the quotation or pro forma invoice before the PO is issued, including warranty duration, DOA coverage, functional-failure criteria, and the RMA process. For obsolete control hardware, buyers should also require serial-number traceability and pre-shipment test records as part of the purchasing documentation.