GE IS200WROBH1A – Relay Fuse & Power Sensing Board

Product Definition

The IS200WROBH1A is a Relay Fuse and Power Sensing Board (WROB) designed for GE’s Mark VIe Series. It serves as an option board within the PDIO Discrete Input/Output Module, capable of integrating with multiple boards, including TDBS, SRLY, and TDBT.

This board provides fused power distribution, relay support, and fuse monitoring in simplex, redundant, or TMR (Triple Modular Redundancy) configurations.

Technical Specifications

Functional Role

• Provides sensed and fused power distribution to the first six relay outputs.

• Supplies dedicated power to the final relay outputs.

• Detects fuse status on six fuse pairings when used with isolated voltage on TDBS.

• Functions as the equivalent of IS200TRLYH1B when connected to the TDBS board.

Extended Board Applications

• In TMR applications, the IS200WROBH1A mounts on the TDBT board and can act as a combined terminal board and contact input terminal board (TBCI equivalent).

• Supports both Simplex and TMR I/O Pack redundancies for flexible system integration.

Frequently Asked Questions

Q: Which I/O redundancies are supported by IS200WROBH1A?
A: The board supports both TMR and Simplex I/O Pack redundancies.

Q: Is IS200WROBH1A a TBCI Board?
A: It can function similarly. When mounted on a TDBT board in TMR applications, the WROB can perform as an equivalent to a TBCI terminal board.

Product Status

While the IS200WROBH1A is considered obsolete, it remains available in new and surplus stock.

Ordering & Availability

For quotes, repairs, or lead times, contact our sales team during standard business hours (Mon–Fri).