Description
⚙️ The GE General Electric DS3800HRRA1D1B is a Relay Output Board used in the GE Mark IV Speedtronic turbine control system. The HRRA board provides relay-based digital output interfacing between the Mark IV control electronics and external field devices. Available technical references identify the DS3800HRRA family as a relay output board with eight relay output channels, eight red status LEDs, an amber indicator, and a front-accessible reset switch. The board uses a modular connector and retention hardware for installation in the Mark IV system.
📋 Product Datasheet
| Parameter | Specification |
|---|---|
| Brand | General Electric (GE) |
| Model | DS3800HRRA1D1B |
| Series | Mark IV / DS3800 Speedtronic |
| Product Name | Digital I/O Relay Output Board |
| Place of Origin | United States |
| Product Status | New – Open Box |
| Dimensions | Approx. 8.25 cm high × 4.18 cm wide; actual assembly dimensions may vary |
| Weight | Approx. 2.5 kg |
| Power | Supplied through the Mark IV system backplane; field-output power depends on the connected circuit |
| Discontinued | Yes – Legacy Mark IV component |
🔧 Key Features
• Mark IV Speedtronic digital I/O board
• Relay output interface design
• Eight independent relay output channels
• Eight red circuit-status LEDs
• Amber status indicator
• Front-accessible reset toggle switch
• Modular connector for system integration
• Retention levers for secure installation
• Designed for GE turbine control applications
• Suitable for replacement and maintenance of legacy Mark IV systems
❓ Common Questions & Answers
Q: What is the GE DS3800HRRA1D1B?
A: It is a GE Mark IV Speedtronic Relay Output Board used to interface digital control signals with external field devices.
Q: What type of I/O does this board provide?
A: The HRRA is a relay-based digital output board. Technical references identify eight relay output channels.
Q: How many status LEDs are provided?
A: The board has eight red indicator LEDs associated with individual circuits, plus an amber indicator.
Q: Does the board have a reset function?
A: Yes. A reset toggle switch is located on the board and can be accessed from the front of the assembly.
Q: Which control system uses DS3800HRRA1D1B?
A: It belongs to the GE Mark IV DS3800 Speedtronic turbine control family.
Q: Is DS3800HRRA1D1B the same as DS3800HRRA?
A: DS3800HRRA is the base board designation, while DS3800HRRA1D1B identifies a specific hardware/revision configuration. The complete part number should be matched when replacing an installed board.
Q: Is this board interchangeable with other DS3800 boards?
A: It should not be assumed interchangeable. Different DS3800 boards perform different functions and use different electrical interfaces. The exact part number and system wiring should be verified before replacement.
Q: What should be checked before installation?
A: Confirm the complete part number, board revision, backplane position, relay-output wiring, field-load ratings, connector condition, and Mark IV system configuration before installation.
⭐ Recommended GE Models
- GE DS3800HRRB1B1A — Relay Output Digital I/O Board
- GE DS3800HRRB1C1B — Relay Output Digital I/O Board
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- GE DS3800HRDA1B1B — Buffer Decoder Board
- GE DS3800HRCA1C1B — Signal Condition Processor Board
The DS3800HRRA1D1B belongs to the legacy GE Mark IV generation, so exact revision and application matching are important when selecting a replacement board.
