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Power entry connectors are designed to allow power to be easily transferred into a device or piece of equipment. They come in a variety of shapes, sizes, and designs, but they all serve the same purpose of providing a reliable connection for electrical power. Inlets, outlets, and modules are three common types of power entry connectors.

Inlets

Inlets, sometimes referred to as power cords, are designed to deliver electricity from an external source into the device or equipment. Inlets often look like traditional AC power cords and have at least two wire leads that attach to an electrical component or device. Common inlets include IEC 60320 (C14) inlets, IEC 60320 (C20) inlets, and IEC 60320 (C19) inlets. Some inlets also feature a variety of safety features, such as integrated fuses, surge protection, or EMI/RFI filters.

Outlets

Outlets, like inlets, are designed to deliver power from an external source, but are typically installed in the device or equipment itself. Outlets often include features such as integrated fuses, surge protection, or EMI/RFI filters for added protection. Common outlet types include IEC 60320 (C14) outlets, IEC 60320 (C20) outlets, IEC 60320 (C19) outlets, and branch circuit breakers. Some outlets also include safety features such as a ground fault circuit interrupter or a branch-type circuit breaker.

Modules

Finally, power entry modules are designed to be mounted to device enclosures to provide a more versatile and reliable power connection. Modules can include a variety of features, such as inlet and outlet circuits, integrated fuse or circuit breaker blocks, and surge protection. Common module types include IEC 60320 (C20) modules, IEC 60320 (C19) modules, and IEC 60320 (C14) modules that include a built-in EMI/RFI filter.

Application Field and Working Principle

Power entry connectors are used in a wide range of applications, including consumer electronics, industrial equipment, medical devices, commercial lighting, and more. The most common application is AC power distribution, but many connectors are also designed to transfer DC power, providing more versatile connections for a wide variety of applications. Power entry connectors use a variety of approaches to ensure a secure and reliable connection, such as bayonet locks, ratcheting mechanisms, or screw-type retention.

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