AS9120B, ISO 9001:2015, and FAA AC 0056B ACCREDITED

Aviation Plugs and Connectors:-What is Their Difference?

The various electronics and electrical systems present in a modern aircraft are often crucial for its standard operations, ensuring power for system control, avionic functionality, passenger entertainment, and so much more. As a result, a new passenger aircraft may contain a complex electrical system that stretches across the vehicle, complete with numerous connection points, plugs, and other elements. When dealing with an aircraft electrical system, especially when setting one up for the first time, it is important to understand the difference between common component types, particularly those such as plugs and connectors. In this blog, we will discuss the difference between an aviation plug and an electrical connector, ensuring you have the knowledge necessary to maintain an optimal electrical system.

For the aviation plug, such components typically come in the form of a metal shell with screw buckles that allow them to be affixed to sockets with ample security. For high durability, the plugs used for aerospace and marine industries are often manufactured from a magnesium aluminum alloy. While plugs are considered to be a type of connector that enables power to move from location to location, they are most often paired with a socket and will be used to provide alternating current. Furthermore, plugs are usually used for the powering of appliances.

In its most basic form, an electrical connector is simply a type of electromechanical device that is capable of joining conductors together to establish a circuit. Connectors can come in numerous forms, accounting for both plugs and sockets. If dissimilar connector types are to be used for an electrical system, adapters can be taken advantage of as well. While all connectors serve to transfer power, data, or audiovisual signals, they can come in the form of inline connectors, chassis connectors, PCB mount connectors, splice connectors, and other such variations.

With their differences, aviation plugs are most often utilized when there is a desire for safe and reliable operations while transferring power and data signals. When you are in the market for an aviation plug or other electrical connector types, it is crucial that you correctly choose between military and civil aviation options. Generally, certain aircraft or applications may necessitate the use of mil-spec components, and they are known for providing high reliability in extreme conditions. Additionally, there are many subtypes of each connector as well, those of which may be classified by their capability, use, or connection method.

Depending on the application, aviation connectors may also vary in their connection method. Thread connections are quite common for larger contacts that face heavy vibration, and they ensure high reliability. Bayonet connections are also reliable, and they are known for being fast to install. Some aviation plugs follow the bayonet connection method, and it is useful for easy maintenance. The last common connection type is the plug-in connection, that of which is the most common connection method for aviation plugs. As plug-in connections require a reciprocating linear motion for installation and removal, it is important to implement ample space for an installation.

At Hardware Domain, we provide customers access to over 2 billion parts and components that are ready for purchase at any time, ensuring you can easily procure the wiring harness parts, screw buckle components, machine tool products, and other aircraft parts you require to be successful. With a supply chain network reaching across locations in North America and the United Kingdom, we can meet time constraints with expedited shipping for domestic and international customers alike. If you find particular items on our website that you are interested in, submit an RFQ form at your earliest convenience and connect with a representative!



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