DS3800NITA | New Surplus GE Turbine Control Board

Description

Product Introduction

The DS3800NITA is an isolated terminal adapter board for Mark IV systems—the “I” in the suffix indicates isolated functionality, the “T” indicates terminal, and the “A” is a manufacturing revision. This board provides isolated termination points for field device connectivity and signal distribution in turbine control applications. It was used in installations where isolated termination points were needed for field device signals to the Mark IV control system.

The board plugs into the Mark IV backplane and provides an isolated terminal interface. Compare this to the DS3800NISA (isolated serial adapter) or the DS3800NHVN (high-voltage neutral interface). The NITA is specifically for isolated terminal applications where isolation and protection are critical.

Key Technical Specifications

Compatible Replacement Models

Frequently Asked Questions (FAQ)

What does the NITA board do?
The NITA is an isolated terminal adapter board for Mark IV systems. It provides isolated termination points for field device connectivity and signal distribution.

What’s the difference between the NITA and the NISA?
The NITA is a terminal adapter—it provides isolated termination points for field device signals. The NISA is a serial adapter—it provides isolated serial communication. The NITA is for signal distribution; the NISA is for serial device connectivity.

What’s the isolation rating of this board?
The isolation rating depends on the specific configuration. The NITA provides electrical isolation to protect the Mark IV backplane from field device signals.

Can I hot-swap this board?
No. Mark IV backplanes are not hot-swappable. Power down the cabinet, lock out the breaker, and wait 60 seconds before removing or installing the board.

What’s the most common failure mode on the NITA?
We’ve serviced about a dozen NITA boards. The most common failure is the terminal point isolation circuitry—it can degrade over time, causing leakage or breakdown. The second most common failure is the edge connector—corrosion from humidity. The board is repairable.

What’s your warranty and lead time?
We stock the NITA in limited quantities. Lead time is 1-2 business days. We offer a 1-year warranty. We test every board with a 24-hour burn-in and a diagnostic verification. The test report is included.

Is this board compatible with the Mark VIe?
No. This board is for Mark IV systems only. The backplane architecture is different.

SCHNEIDER AS-J890-102
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SCHNEIDER 140CPU67160
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