The IS200TGENH1A by General Electric (GE) is a key component in the Mark VI series. This series controls and automates gas and steam turbine processes. Notably, the Mark lineup began with the Mark I in 1969.

Key Components

The IS200TGENH1A features several important components:

• Long Terminal Block:
  • One long black terminal block sits in the upper left corner of the PCB.
• Smaller Terminal Blocks:
  • Three smaller black terminal blocks align in the lower half, beneath the larger terminal block.
• Relays:
  • Four large black square components, known as relays or contactors, occupy the center. They have yellow centers on top.
• Metal Oxide Varistors (MOVs):
  • To the left of the relays, find at least six solid red circular MOVs.
• Inductors:
  • Three round white inductors, also known as coils, line up vertically in the lower half. Each inductor features a coil of wire covered with white fabric.
• Connector Ports:
  • Along the right border, three connector ports contain small female connectors. These ports are labeled as JT1, JS1, and JR1.

Additional Components

In the upper half of the IS200TGENH1A, several vertical rows of small components exist:

• Transistors:
  • Four black half-circle-shaped transistors are arranged vertically on the right side.
• Jumpers:
  • Two rows of four red jumpers are positioned in this area. Each jumper connects three metal jumper pins.