GE IS200SRLYH2A Simplex Relay Output Terminal Board

The GE IS200SRLYH2A is a simplex relay‑output terminal board used in Mark VIe distributed turbine‑control systems. It provides 12 Form‑C relay channels, 48 customer screw terminals, and full compatibility with PDOA/YDOA I/O packs. The board supports option‑board expansion, pluggable terminal interfaces, and surface‑mount relay circuitry designed for reliable turbine‑protection and control applications.

Description

The IS200SRLYH2A is a simplex S‑type relay‑output terminal board that hosts a PDOA or YDOA I/O pack and provides isolated Form‑C relay outputs for turbine‑control logic. Each relay position is monitored through an isolated contact pair, enabling accurate feedback to the I/O pack. The board supports double‑stack mounting and integrates seamlessly with other S‑type terminal boards in Mark VIe cabinets.

Specifications

• Manufacturer: General Electric

• Model Number: IS200SRLYH2A

• Series: Mark VIe

• Product Type: Simplex Relay Output Terminal Board

• Relay Channels: 12 Form‑C relay circuits

• Customer Terminals: 48 screw terminals

• Max Load Current: 125 V DC

• Technology: Surface‑mount

• Operating Temperature: −30°C to +65°C

• Board Size: 15.9 cm × 17.8 cm

• Country of Origin: USA

• Manual: GEH‑6721L

• Availability: In Stock

Features

• 12 Form‑C Relay Outputs: Each relay provides NO/NC/Common terminals for flexible wiring.

• PDOA/YDOA I/O Pack Compatibility: The I/O pack mounts directly on the board and becomes the tallest component, allowing double stacking.

• 48 Customer Terminals: Screw‑type terminals simplify field wiring and maintenance.

• Option‑Board Support:

  • SRLY1A: Fixed box terminals (no JW1/JW2 connectors).

  • SRLY2A: Pluggable JW1/JW2 connectors for option‑board integration.

• High‑Voltage Clearance: Supports >250 V AC clearance on customer terminals and JW1 circuits.

• Surface‑Mount Relay Technology: Ensures compact layout and stable electrical performance.

Installation

• Mounted on a sheet‑metal carrier with a plastic insulator.

• Carrier assembly attaches to the cabinet using screws.

• Option boards plug directly into JW1/JW2 connectors (SRLY2A only).

• Terminal points vary depending on whether an option board is installed.

• Designed for easy stacking with other S‑type terminal boards.

Operation

Each relay circuit includes:

• Form‑C contact set (NO/NC/Common)

• SOL terminal (unused unless an option board is installed)

• 5 A current rating on customer screw terminals and JW1 circuits

• Relay rating determines final application limits

Option‑board behavior:

• WROBH1: Six jumpers control relay power distribution.

• WROFH1: No jumpers; fuse behavior depends on relay‑common selection.

• Fuse voltage‑sensing circuits may be bypassed if required for direct voltage detection.

FAQ

• What is IS200SRLYH2A? A simplex relay‑output terminal board used in Mark VIe turbine‑control systems.

• How many relay channels are available? The board supports 12 Form‑C relay circuits.

• Does it support option boards? Yes—SRLY2A supports JW1/JW2 connectors for option‑board integration.

• What is the load rating? Customer terminals support 125 V DC and 5 A, limited by relay specifications.