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What is E27 Socket?


When it comes to lighting fixtures, there are various types of sockets and fittings available to accommodate different types of light bulbs. One such common socket is the E27 socket, which is widely used in residential and commercial lighting applications. In this article, we will explore what an E27 socket is, its features, and its advantages.


Understanding the E27 Socket


The E27 socket, also known as the Edison Screw (ES) or the Medium Edison Screw (MES), is named after its inventor, Thomas Edison. The "E" stands for Edison, while the number "27" refers to the 27mm diameter of the screw base. This socket design is prevalent in many countries, including Europe and the United States.


Features and Specifications


1. Screw Feature: The E27 socket is characterized by a screw base, which allows easy installation and removal of light bulbs. This design ensures a secure connection between the socket and the bulb, reducing the chances of flickering or loose connections.


2. Compatibility: E27 sockets are designed to accommodate a wide range of light bulbs, making them highly versatile. They are commonly used with incandescent, LED, and compact fluorescent bulbs.


3. Electrical Specifications: E27 sockets typically support a voltage range between 110-240 volts, making them suitable for use in most residential and commercial settings. Moreover, they can handle various wattage ratings, allowing for different levels of brightness.


Advantages of E27 Sockets


1. Availability: E27 sockets are widely available and can be found in numerous hardware stores, making it convenient for users to replace light bulbs without any difficulty.


2. Energy Efficiency: With the rise of energy-efficient lighting options, E27 sockets can accommodate LED bulbs, which consume less energy than traditional incandescent bulbs. This makes them a cost-effective choice for individuals aiming to reduce their energy consumption and lower electricity bills.


3. Flexibility: E27 sockets allow users to choose from a wide array of bulb types, shapes, and designs. Whether you want warm or cool lighting, dimmable or non-dimmable options, or decorative bulbs for aesthetic appeal, the E27 socket can meet your requirements.



The E27 socket has remained a standard in the lighting industry due to its versatility, compatibility, and ease of use. Whether you are looking to brighten up your living space, office, or other commercial environments, understanding the basics of the E27 socket will help you select the appropriate light bulbs to suit your needs. With its affordabil

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