Description
Product Overview
GE IS200WROBH1AAA is an SRLY option board for the Mark VIe system.
In short, this PCB works inside GE turbine control systems.
Specifically, it uses Speedtronic technology first introduced in the 1960s.
Furthermore, the board has a conformal coating to protect against moisture and dust.
As a result, it suits harsh industrial environments.
Key Features at a Glance
- 12 fuses – each rated 3.15A, 500VAC / 400VDC
- Fuse model – LITTELFUSE 04773.15MXP with printed labels
- Conformal coating – protects the PCB from damage
- High-voltage components – resistors, transistors, and capacitors
- Three insulated holes – factory-drilled for easy mounting
- Three revisions – two functional revs and one artwork rev (all grade A)
- Made in USA – by GE Energy
Technical Data
Brand: GE Energy
Model: IS200WROBH1AAA
Series: Mark VIe
Functional Acronym: WROB
Description: SRLY Option Board – B
PCB Coating: Conformal coating
Functional Revision 1: A
Functional Revision 2: A
Artwork Revision: A
Fuses
- Quantity: 12
- Rating: 3.15A, 500VAC / 400VDC
- Manufacturer number: LITTELFUSE 04773.15MXP
- Each fuse has a printed label for ID
Key Components
Resistors, transistors, capacitors – for voltage limiting and storage
Mounting
Three insulated factory-drilled holes
Protection
Conformal coating on the PCB
Part Number Breakdown
- IS200 – domestic GE PCB, normal assembly type
- WROB – functional acronym for SRLY option board
- H – conformal coating style
- 1 – Group One Mark VIe series grouping
- AAA – two functional revs (A/A) and one artwork rev (A)
Installation Guide
- First, power down the Mark VIe system completely.
- Next, locate the correct slot for the SRLY option board.
- Then, align the board using the three insulated mounting holes.
- After that, secure the board firmly in place.
- Finally, connect all necessary wiring and restore power.
Debugging & Maintenance
- First, check the 12 fuses if the board stops working.
- Each fuse has a printed label – replace only with LITTELFUSE 04773.15MXP.
- Also, inspect the conformal coating for damage or peeling.
- Moreover, use a multimeter to test voltage at key points.
- Finally, keep the board clean and dry for long life.
Compatibility
- Designed for GE Mark VIe turbine control systems.
- Works as an SRLY option board (type B).
- Use with other Mark VIe boards from the same series.
- Do not mix with older Mark V series boards.
- Compatible with Speedtronic based systems.
Environmental Performance
- Conformal coating protects against moisture and dust.
- High-voltage components handle demanding conditions.
- Operates inside GE turbine control cabinets.
- Designed for long-term industrial use.
- Made in the USA to GE quality standards.
Packing & Warranty
In the box
- One GE IS200WROBH1AAA SRLY option board
- No cables or fuses included – fuses are pre-installed on the board
Warranty
12 months warranty from shipment date. Covers factory defects and normal use failures.
Shipping options
- FedEx – fast and trackable
- UPS – reliable worldwide delivery
- DHL – express for urgent orders
Typical Applications
- GE Mark VIe turbine control systems
- Gas turbine auxiliary control
- Steam turbine protection circuits
- High-voltage relay and switching applications
- Industrial power generation panels
- Need Versamax products? Click here for Versamax
Diagnostic Tips
- First, inspect all 12 fuses if the board has no output.
- A blown fuse usually means a short or overload downstream.
- Also, check for dark spots or burning on the PCB.
- Moreover, use the printed labels on each fuse for easy ID.
- If a fuse blows again after replacement, find the root cause first.
FAQ – Professional Questions
Q1: What does the conformal coating do on IS200WROBH1AAA?
A1: It protects the PCB from moisture, dust, and chemical damage. This helps the board last longer in harsh environments.
Q2: What type of fuse does this board use?
A2: It uses LITTELFUSE 04773.15MXP fuses. Each fuse is rated 3.15A at 500VAC or 400VDC.
Q3: Can I use this board with Mark V systems?
A3: No. This board is only for Mark VIe systems. It will not work with older Mark V series.
Q4: How do I know if a fuse is blown?
A4: First, check the printed label on each fuse. Then test with a multimeter. A blown fuse shows no continuity.
Q5: Why are there three revision A grades on this board?
A5: The board has two functional revisions and one artwork revision. All three passed GE testing and received an A grade.
Experience-Based Q&A
Q6: One of my fuses keeps blowing after replacement. What should I do?
A6: Do not keep replacing fuses. First, check the downstream wiring for a short circuit. Then test the connected load. The problem is likely outside the board.
Q7: The conformal coating looks yellow on my old board. Is that normal?
A7: Yes. Conformal coating can change color with age and heat. However, if it peels or cracks, replace the board for safety.
Q8: Can I mount this board without using all three holes?
A8: We strongly recommend using all three insulated holes. This prevents vibration damage and keeps the board stable.
Purchasing Guidance
- First, confirm your system is Mark VIe – not Mark V or Mark VI.
- Then, check if you need the SRLY option board type B specifically.
- Also, consider buying a spare IS200WROBH1AAA to reduce downtime.
- Moreover, inspect your current fuses before ordering – they are standard LITTELFUSE parts.
- Finally, ask us about bulk discounts for multiple boards.
- Need help with selection? Contact our team for free advice.
Contact Information
For questions or orders:
+86 158 8020 0923 – Click to chat on WhatsApp
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