Description
Component Snapshot At-a-Glance
- Model: IS400AEBMH4AJD
- Series: GE IS400 / Mark VIe
- Type: Heat Sink Module / Thermal Management Board
- Core Function: Dissipates heat from high-power control electronics to prevent overheating
- Pair With: IS400 series control boards (e.g., IS400AEBMH1AJD, IS400AEBMH3A)
- Key Feature: Passive/active thermal dissipation; optimized for high-temperature industrial environments
- Use: Turbine control system thermal management, ensuring stable operation of core control modules

Hard-Numbers: Technical Specifications
- Mount: Compatibility with Mark VIe backplane/rack system
- Thermal Design: High-efficiency heat dissipation; low thermal resistance for rapid heat transfer
- Operating Temp: -40°C to +70°C (non-condensing)
- Storage Temp: -40°C to +85°C
- Certifications: CE, UL, ATEX (per Mark VIe system compliance)
- HS Code: 8537101190
- Weight: ~1.5–2.0 kg (varies by revision)
- Material: High-conductivity aluminum alloy (primary) + thermal interface material (TIM)
The Real-World Problem It Solves
In GE Mark VIe turbine control systems, high-power processors and I/O modules generate significant heat. Without effective thermal management, overheating can cause performance degradation, intermittent faults, or permanent module failure—critical risks in power generation and oil & gas operations. provides targeted heat dissipation to maintain safe operating temperatures, extending component lifespan and ensuring system reliability.
Typical Applications:
- Gas/steam turbine control cabinet thermal management
- Heat dissipation for high-density control boards in Mark VIe systems
- Harsh industrial environments (power plants, refineries, offshore platforms)
Hardware Architecture & Under-the-Hood Logic
is a purpose-built thermal interface module:
- Integrates large-area heat-dissipating fins to maximize surface area for heat release.
- Features precision-machined contact surfaces for direct bonding to hot components (e.g., CPUs, power semiconductors).
- Includes integrated thermal interface material (TIM) to minimize thermal resistance between the module and target components.
- Designed for secure mounting within the Mark VIe rack, with airflow guidance to optimize natural convection cooling.
- No moving parts (passive design), reducing maintenance requirements and failure points.

Field Service Pitfalls: What Rookies Get Wrong
Misalignment with Heat SourcesIncorrect positioning fails to target hotspots → overheating.
- Field Rule: Align the heat sink’s baseplate with the designated heat-generating component (e.g., control board CPU) and verify firm contact with thermal paste/TIM.
Contaminant BuildupDust/debris blocks airflow and reduces efficiency.
- Field Rule: Inspect and clean the heat sink fins quarterly; use compressed air (low pressure) to avoid damaging fin structures.
Incompatible Thermal PasteLow-quality or expired paste increases thermal resistance.
- Field Rule: Use GE-specified thermal interface material (TIM) with high thermal conductivity; replace paste during reinstallation to ensure optimal heat transfer.
Improper Mounting TorqueOver-tightening damages components; under-tightening causes poor contact.
- Field Rule: Follow torque specifications (typically 2–4 N·m) for mounting screws; use a torque wrench for consistency.
Commercial Availability & Pricing Note
Please note: The listed price is for reference only and is not binding. Final pricing and terms are subject to negotiation based on current market conditions and availability.
- Availability: New, refurbished, and used units available; lead time varies by supplier.
- Warranty: 12-month warranty for refurbished/new units (terms apply).


