402025-004 - AeroPlug CTC90347-19M – 28V DC Aircraft GPU Cable – 20', 4/0 AWG

The AeroPlug CTC90347-19M is a 28V DC aircraft ground power unit (GPU) cable used to supply external electrical power to aircraft during ground operations. It connects a GPU to the aircraft’s DC receptacle, enabling system checks, maintenance, and cabin operations without running the onboard engines. This helps reduce fuel consumption and wear on aircraft systems. It is an essential component for efficient ground handling and maintenance workflows.

This aircraft GPU cable features a 20-foot length and 4/0 AWG conductors, designed for high-current DC power transfer. It follows the MS90347 cable assembly standard for 3-pole DC connections. The cable uses single conductors with no control lead, ensuring a straightforward, durable configuration. These specifications make it suitable for demanding ground power applications.

The CTC90347-19M cable uses a 3-pole DC AeroPlug connector that meets military-grade specifications. These connectors are built for secure engagement with aircraft receptacles, ensuring reliable electrical contact. The design supports safe, high-current power delivery during ground operations. This compatibility is critical for standardized aircraft servicing environments.

AeroPlug connectors and cable assemblies are based on proven designs that meet applicable military standards. They feature durable materials, including silver-plated copper contacts for high conductivity and consistent performance. The connectors are also resistant to abrasion and environmental exposure. This ensures long service life and dependable operation in harsh ground conditions.

The 4/0 AWG cable size enables efficient transmission of the high electrical currents required by aircraft systems. Larger conductors reduce resistance and minimize voltage drop over the cable length. This ensures stable power delivery to critical avionics and onboard systems. It also helps prevent overheating during extended use.

Using a dedicated GPU cable, such as the CTC90347-19M, allows maintenance teams to power aircraft systems without running engines or APUs. This reduces fuel usage, noise, and emissions while enabling safer working conditions. Technicians can perform diagnostics, repairs, and system checks more efficiently. It also helps extend engine life by limiting unnecessary operation.

Yes, the cable is designed to meet MS90347 standards, making it compatible with many aircraft that use 28V DC ground power systems. It pairs with matching AeroPlug connectors and receptacles commonly found on business jets and other aircraft. Compatibility should still be verified against the specific aircraft maintenance manual. Using the correct cable ensures safe and proper operation.

AeroPlug cable assemblies feature silver-plated copper contacts that provide high conductivity and corrosion resistance. The connector bodies are molded from durable materials such as Hypalon, offering excellent abrasion and chemical resistance. These materials are selected to withstand the demands of aviation environments. This construction contributes to long-term durability and consistent electrical performance.

A 20-foot GPU cable provides flexibility in positioning ground power units relative to the aircraft. It allows technicians to maintain a safe working distance while still ensuring a secure connection. The length is ideal for ramp and hangar environments where space and positioning can vary. This improves operational efficiency and reduces cable strain.

Regular inspection of the GPU cable is essential to ensure safe operation. Technicians should check for insulation wear, connector damage, and secure contact integrity. Any signs of fraying, corrosion, or overheating should be addressed immediately. Proper storage and handling also help extend the cable’s service life and maintain reliable performance.