Power Entry Module (PEM)

Combining multiple electrical components into a single unit makes setting up your electronic device easy. With a power entry module, you can quickly assemble your product design and simplify the power entry element.

The RS selection of power entry modules includes components from a wide range of industry-leading brands. As North America's largest authorized electronics distributor, we ensure that our entire product range is built to high-quality specifications and can be relied upon to perform efficiently and effectively, no matter their application.

Learn more about what makes a power entry module so useful in an electronic device, including what they are, how they work, and why you should use one, by reading below. If you have any queries or are looking for more information, contact our team or consult our expert hub for advice and guidance on your next project.

What are power entry modules?

A power entry module combines numerous electronic functions and components into one unit that controls the power supply entry to an electronic device. Although it is possible to create a power inlet module with individual components, there are many benefits in choosing a ready-assembled power entry module.

Due to their compact size, power entry modules are often used in electronics projects to save space on a device's chassis or circuit board.

How do power entry modules work?

In electronics with detachable power entry cables, an inlet is needed to attach a cable and supply the device with power. Often, these inlets will need to be connected to multiple components to sufficiently power the equipment and protect the user when operating the device. Using many different components can cause clutter on a circuit, leading to wiring problems and maintenance issues.

Power entry modules help to simplify this issue. In one compact unit, power inlet modules include power entry functions, provide protection, and ease of maintenance. The power entry module supplies the device with power once connected to a power cable, just as it would if it were constructed with individual components.

Commonly, power entry modules are used in information technology and medical equipment.

What are the different types of power entry modules?

Essentially, all power entry modules function similarly. AC power entry modules are commonly used in electronic equipment and utilize an external AC powerline to supply electricity to the device. Two common types of power entry module are:

• Power entry modules with a switch: Simply, these types of power entry modules use a switch to control the supply of power into an electronic device.
• Power entry modules with a line filter: A-line filter helps to regulate or reduce the power being supplied to a device. These types of modules are ideal for devices that run on a lower voltage than is supplied by the power cable.

Why use a power entry module?

Beyond their functionality, there are many reasons to use a power entry module in electronic applications. A few of the benefits include:

• User safety: A power inlet module's design usually requires a user to remove the power cable from the unit before making any adaptations. This decreases the risk of electric shock when fixing the equipment.
• Saving space: As power entry modules combine multiple components into one mounting panel, they take up less space on the mounting surface and within a circuit.
• Reduced labor: Due to power entry modules already combining multiple components, using one can reduce labor time and cost when building an electronic device.

Why purchase your power entry modules from RS?

No matter your power entry module needs, at we have the perfect electronic components to complete your project with ease. We even offer quick and easy shipping to ensure your project is finished on time.

We stock hundreds of premium-quality components from industry-leading brands and suppliers. RS is firmly established as the largest authorized electronics distributor in North America, which helps us to support your projects every step of the way.

Our friendly and knowledgeable team is on hand to answer queries you might have and to offer advice on our power entry module collection. All you need to do is get in touch with us directly or visit our expert hub and we will set you on the right path to complete your project on time and to your impeccable standards.