GE IS200WROBH1A Mark VI Relay Power Sensing Board
Manufacturer: GE Fanuc
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Part Number: IS200WROBH1A
Condition：New with Original Package
Product Type: Relay Boards
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
GE IS200WROBH1A Mark VI Relay Power Distribution Board
The IS200WROBH1A is a relay power sensing and fuse distribution board manufactured by General Electric as part of the Mark VI and Mark VIe Speedtronic turbine control system families. Functioning under the acronym WROB, this board provides fused power distribution and integrated voltage feedback monitoring for relay output circuits in critical industrial control environments. It supports both AC and DC voltage sensing across multiple ranges, allowing control systems to continuously monitor circuit integrity without requiring external measurement tools.
Power Distribution and Voltage Feedback
The board features integrated 3.15 A default fuse protection combined with feedback sensing logic to safeguard relay output loops. It handles a versatile voltage matrix including 24 VDC, 48 VDC, 125 VDC, 120 VAC, and 240 VAC circuits. Built-in galvanic isolation barriers isolate outputs to prevent electrical noise transmission into sensitive downstream control electronics.
System Architecture and Terminal Integration
Designed to interface directly with GE's TRLY relay module series, the IS200WROBH1A routes power through dedicated terminal board hardware. It supports connection to TDBS, TDBT, and SRLY hardware, as well as TDBTH2, TDBTH4, and TDBTH6 series terminal boards. The board supports simplex, dual-redundant, and Triple Modular Redundant (TMR) architectures, maintaining fault-tolerant operation in safety-critical turbine trip and control loops.
| Parameter | Specification |
|---|---|
| Model | IS200WROBH1A |
| Brand | General Electric (GE) |
| Product Series | Mark VI / Mark VIe Speedtronic |
| Product Type | Relay Fuse and Power Sensing Board |
| Functional Acronym | WROB |
| Default Fuse Rating | 3.15 A |
| Voltage Feedback Ranges | 24 VDC, 48 VDC, 125 VDC, 120 VAC, 240 VAC |
| Relay Hardware Compatibility | TRLY relay family |
| Compatible Terminal Boards | TDBS, TDBT, SRLY, TDBTH2, TDBTH4, TDBTH6 |
| Redundancy Configurations | Simplex, Redundant, TMR |
| Isolation | Galvanic isolation for all outputs |
| Operating Temperature Range | -40 deg C to 70 deg C |
| Storage Temperature Range | -40 deg C to 85 deg C |
| Mounting Options | Panel or rack installation |
Frequently Asked Questions
Q: What power ranges can the IS200WROBH1A monitor? A: The board provides feedback sensing across standard DC voltages of 24 VDC, 48 VDC, and 125 VDC, as well as AC inputs of 120 VAC and 240 VAC.
Q: Which terminal boards are required for TMR turbine configurations? A: For Triple Modular Redundant configurations, the WROB board integrates with TDBTH2, TDBTH4, and TDBTH6 terminal boards.
Q: Are the protective fuses on this board field-replaceable? A: Yes, the default 3.15 A fuses can be replaced directly in the field during standard maintenance procedures.