Power Supply Units & Batteries

Power Supply Units for Access Control

At Door Controls Direct we hold all of your power supply unit requirements in stock, including 12v and 24v CE-approved DC power supply units (PSUs) in 1, 2, 3 & 5 amp versions. Let's explore the unparalleled benefits of these cutting-edge units, designed to provide seamless power and unmatched protection.

Smooth, Consistent, and Stable Power Output

These power supplies are regulated which means that they ensure a continuous, smooth output voltage that is also consistent, and stable. Say goodbye to power fluctuations that could potentially disrupt your security systems. With our PSUs, your devices operate flawlessly, offering you peace of mind and enhanced security.

Safeguarding Against Voltage Surges

This also means that door hardware products have protection from damage through voltage surges. Investing in our regulated power supplies is an intelligent decision as it guarantees protection against voltage surges. These advanced units shield your valuable security equipment from damage, keeping them running efficiently for extended periods.

Battery Backup Options

When battery backup is a necessity, our power supplies have you covered. With ample space inside, these units can effortlessly accommodate maintenance-free rechargeable batteries, ensuring uninterrupted power supply during critical moments. We stock a range of batteries by Yuasa; for 24V DC power supply units, you will require two 12V DC batteries.

Transformers for Specific Devices

We also supply 24V DC, 12, and 4 amp transformer rectifiers which are the best types of power supply units to use with electromagnetic door holders and electromagnetic door closers as these types of products do not require battery backup. These are also regulated and safe.

Transformer rectifiers are used with door hardware and access control that require a large draw of direct current (DC). The unit converts AC current to DC (the rectification process), then provides a consistent source of DC to the electric lock and other items of powered ironmongery. 

Regulated power supplies (our range incorporates Switch mode technology) should be used with any electromagnetic door closer, access control kit, or CCTV system to avoid product damage through voltage surges. 

Switchmode PSUs are highly efficient, providing a steady power supply regardless of surges in the input supply. This is why they’re best suited to be used alongside electronic equipment such as fire alarms. The units themselves are often smaller and lighter and run cooler than standard linear PSUs.

Power Consumption

In order to select the correct power supply unit, you need to calculate the total amps required from all of the access control products and items of door hardware that will draw power from the PSU. 

Access control and electric locks will have noted the voltage (V) and current (mA) that they require to function correctly. Add the numbers of each product together to determine the minimum power requirement for the access control system.

A key aspect to be aware of is that some electronic locks require a high activation current, so factor this into any power power supply calculations.

Here is an example from one of our blogs: 

Approximate Estimations:

Single maglock @ 500mA

Basic keypad @ 120mA

Ancillary items @ 100mA

= total of 720mA so a 1Amp PSU would power this single door setup, but the best practice is to double this number to ensure that it’s sufficient.

For more information on how to work out what power supply you require and a guide to cabling, take a look at our blog: A Guide to Power Supplies In Access Control Systems. If you can’t find what you’re looking for, please contact us.

Key Features

Some common key features amongst our power supply range include:

• Full current to load.
• Regulated dc output.
• Additional battery charging.
• Deep discharge protection.
• Current limiting.
• Short circuit protection.
• Mains transient protection.
• Compliant to EMC EN61000-6-1 & 3.
• Can house a backup battery.
• Switchmode technology.
• Mild steel construction.
• White powder-coated finish.
• LED Indicators (mains, battery output.).
• Separate fused mains connections.
• Full electronic protection.
• Onboard tamper protection.
• Switch mode.
• Multiple cable entry.
• Lockable models are available on request.
• Click through to an individual product to view specific model details.

Explore Our Power Supply Range Today

Replacement 24V and 12V power supplies for our major industry-leading brands, which include Dormakaba and Briton; which supply electromagnetic door closers and hold open magnets – are also held in stock.

Choose Door Controls Direct for reliable, efficient, and top-of-the-line power supply units. Elevate your security and access control systems to new heights with our cutting-edge PSUs. Embrace uninterrupted power and unrivaled protection - shop now!