GE IS220PRTDH1A 336A4940CSP6 | Original 8-Channel RTD Pack

• Model & Brand: GE IS220PRTDH1A
• GE Part Number: 336A4940CSP6
• Functional Designation: PRTD
• Product Family: GE Mark VIe Control
• Part Type: Resistance Temperature Device (RTD) Input I/O Pack
• Channel Capacity: 8 RTD inputs
• Primary Function: Acquires resistance-temperature signals from field RTDs and transfers the measurements into the Mark VIe control system.
• Nominal Pack Supply: 28 VDC
• Maximum Supply Current: 0.24 A
• RTD Excitation Current: Approximately 10 mA
• Maximum RTD Input Voltage: 4.2 V
• Field Interface: Connects to compatible RTD terminal boards.
• Compatible Terminal Boards: IS200TRTDH2D, IS200SRTDH1A, and IS200SRTDH2A for the documented hazardous-location configuration.
• Estimated Net Weight: Approximately 0.4–0.6 kg; verify the physical unit before creating freight master data.
• Estimated Shipping Weight: Approximately 0.7–1.0 kg with ESD shielding, connector protection, cushioning, and export packaging.
• Physical Dimensions: Use the actual pack for final W × H × D measurement; the reviewed GE documentation does not provide a sufficiently reliable dimensional figure for this exact complete assembly.
• What’s in the Box: IS220PRTDH1A I/O pack unless the purchase order explicitly includes the RTD terminal board, mounting hardware, cables, or other Mark VIe accessories.
• Receiving Control: Record IS220PRTDH1A, 336A4940CSP6, hardware revision, serial/date information, and the associated terminal-board model.

GE’s Mark VIe HazLoc documentation specifically identifies IS220PRTDH1A as an RTD input module and defines its approved terminal-board combinations and electrical ratings.

Product Introduction

The GE IS220PRTDH1A mounts to a compatible Mark VIe RTD terminal board and provides the active electronics needed to acquire temperature signals from field resistance sensors. The published electrical specification calls for 28.0 VDC nominal power, with a maximum consumption of 0.24 A, while the RTD interface is specified at approximately 10 mA excitation and up to 4.2 V input.

This is specialized temperature-input hardware, not a generic analog card. GE’s certification documentation ties the PRTD pack to specific TRTD/SRTD terminal boards, and that combination forms part of the certified Mark VIe installation architecture. For a legacy turbine, the complete part identity and terminal-board pairing should remain under configuration control (especially when the spare will be used in a hazardous location).

Core Technical Specifications

The 28.0 VDC nominal supply, 27.4–28.6 VDC range, 0.24 A maximum current, 4.2 V maximum RTD input voltage, and 10 mA excitation are explicitly documented in GE’s Mark VIe equipment material.

GE IS220PRTDH1A 336A4940CSP6

Global Compliance & Industry Certifications

The has documented hazardous-location certification context, but the qualification applies to specified I/O-pack and terminal-board combinations.

• CE Mark: Verify the Declaration of Conformity for the applicable Mark VIe hardware revision and installation.
• UL/cUL: Do not mark the loose PRTD pack as independently UL/cUL Listed without the applicable GE agency documentation.
• ATEX: GE’s type-examination documentation explicitly includes and identifies approved RTD terminal boards.
• IECEx: Check the applicable Mark VIe IECEx certificate for the exact PRTD revision and terminal-board combination before use in a hazardous location.
• Hazardous Location: The published protection concept includes Ex nA / Ex ec with intrinsic-safety “ic” interfaces, depending on the certification generation and wiring arrangement. GE’s documentation specifically gives entity-parameter requirements for the intrinsic-safety RTD circuit.
• Marine / DNV: No standalone DNV approval was verified for this exact .
• Functional Safety: Standard PRTDH1A should not be represented as a Mark VIeS safety RTD module merely because it performs temperature measurement.

The intrinsic-safety distinction is important in plant audits. The RTD circuit must satisfy the certified Voc/Isc, Vmax/Imax, Pi/Po, Ci/Co, and Li/Lo relationships where that protection method applies; a substitute terminal board or field device can invalidate the approved entity arrangement.

Verify specific lot certifications with OEM.

Long-Term Storage & Asset Preservation Guide

Keep the PRTD in an original or equivalent ESD shielding bag. The field connector, power interface, and PCB electronics should remain protected from conductive contamination and mechanical shock throughout storage.

Target below 60% RH for long-term warehouse storage. That is a preservation target, not the device’s maximum operating humidity. Stable, dry conditions reduce contact oxidation and the chance of intermittent RTD signal faults after long shelf periods.

Preserve the exact terminal-board pairing in the stock record. GE’s certification documentation ties the PRTD to specific TRTD and SRTD boards. A spare without that compatibility information should not be issued to a field technician without an engineering review.

Protect the connector face during transport. Use perimeter cushioning and a rigid outer carton; never allow packing material to load directly against the connector shell.

Physical Installation Prerequisites

The is an I/O pack that mounts to a dedicated Mark VIe RTD terminal board. It is not a conventional DIN-rail RTD card. GE’s documented hazardous-location configuration specifies the compatible TRTDH2D, SRTDH1A, and SRTDH2A terminal boards.

Terminal-board match: Verify the exact board before installation. For hazardous-area applications, the certified combination must be preserved.

Power: Supply 28.0 VDC nominal, staying within the documented 27.4–28.6 VDC range and allowing for the 0.24 A maximum module current.

RTD wiring: Confirm sensor type, wire configuration, lead routing, shield termination, and terminal allocation against the installed Mark VIe drawing. An open lead or incorrect termination can be mistaken for a PRTD hardware fault.

Mechanical alignment: Seat the pack squarely onto the terminal board and tighten the retaining hardware evenly. Do not use the electrical connector as a mechanical lever.

Cooling: Preserve the Mark VIe cabinet’s designed airflow around the I/O assembly. Do not impose an arbitrary 50 mm clearance where the cabinet drawing defines a different arrangement.

Grounding and shielding: Maintain the Mark VIe protective-earth and instrumentation-shield arrangement. RTD signal wiring should remain isolated from improvised cabinet grounding paths.

Hazardous-area entity parameters: Where intrinsic-safety “ic” is used, verify the complete field-device and cable parameters against the GE-certified interface values before energization.

Buyer’s FAQ — Logistics & Compliance Focus

Q: What HS Tariff Code should I use for 336A4940CSP6?
A: HS 8538.90 may be considered for a specialized I/O module used as part of electrical control equipment. The final national tariff code must be validated against the destination country’s tariff schedule and customs interpretation. Use the technical description GE Mark VIe RTD Input I/O Pack, 8-channel rather than a generic “temperature sensor.”

Q: What Country of Origin should appear on the invoice?
A: Use the actual manufacturing origin supported by the physical label or GE traceability documentation. Do not infer COO from the seller’s warehouse or shipping location. Retain the nameplate photograph, serial/lot information, COO declaration, commercial invoice, and packing list together.

Q: Should I insure one PRTD pack during international shipping?
A: Yes when it is a production-critical turbine spare. The unit is relatively light, but a failed RTD interface can affect several temperature measurements simultaneously. Use ESD protection, rigid cushioning around the connector, moisture protection, tracking, and cargo insurance based on the documented replacement value.

Q: Does include the latest firmware pre-loaded?
A: Do not assume a “latest firmware” claim for the loose module. The PRTD is an intelligent Mark VIe I/O pack, so its operation depends on the installed Mark VIe software and I/O configuration. Acceptance should verify hardware revision, application compatibility, terminal-board pairing, and system software support before commissioning.

Q: Can I replace PRTDH1A with PRTDH1B?
A: Do not treat the revision change as unconditional. GE’s hazardous-location documentation lists both and separately identifies the coated IS221PRTDH1B configuration with different terminal-board part numbers. Verify the exact hardware, coating, certification basis, and terminal-board combination before migration.