GE 817D929-1

At a Glance

GE 817D929-1 is an industrial auxiliary relay PCB used as part of compatible control and electrical interface assemblies. Supplier records describe it as an auxiliary relay board, while component listings also connect the board with the 4076J85-G1 designation.

The unit is intended for applications where relay-based signal handling forms part of the equipment’s control architecture. It can therefore serve as a replacement component during troubleshooting, refurbishment, or planned maintenance.

Functional Role

An auxiliary relay board generally provides electrical switching or signal-interface functions within a larger control assembly. Instead of operating as a complete controller, this type of PCB works alongside other electronic and electrical circuits.

Its role can include:

• Relay signal interface
• Electrical circuit switching
• Control-system signal routing
• Auxiliary equipment coordination
• Replacement support for legacy assemblies

Physical and Electrical Characteristics

The assembly uses a dedicated printed circuit board format. Electronic components are mounted and interconnected according to the original circuit design. Connection points and mounting features are intended to correspond with compatible equipment.

Because detailed public technical documentation for this specific board is limited, users should confirm electrical ratings, connector assignments, revision information, and system compatibility against the equipment documentation before installation.

Where It Fits

This component is most relevant to industrial automation and legacy control equipment. It may be useful in systems that depend on relay-based auxiliary functions and require continued operation of established hardware.

Typical maintenance scenarios include:

1. Replacement of a failed relay PCB.
2. Restoration of older industrial machinery.
3. Preventive spare-parts preparation.
4. Control cabinet refurbishment.
5. Troubleshooting of relay-interface circuits.

Handling Recommendations

Keep the board in suitable anti-static packaging when it is not installed. Avoid touching exposed conductive areas unnecessarily. Store it in a clean, dry environment away from excessive humidity and contaminants.

Before commissioning a replacement, compare the original board and replacement unit carefully. Check connectors, mounting points, visible component condition, and revision markings. Power should remain isolated during mechanical installation.

Why Keep a Spare?

Legacy industrial equipment can depend on boards that are no longer part of mainstream production. A replacement board can reduce the downtime associated with unexpected control-system failures.

For maintenance teams, keeping compatible spare PCBs available can also simplify repair planning and shorten the response time when an existing relay interface develops a fault.