MEAN WELL EDR-120-24 POWER SUPPLY

MEAN WELL EDR-120-24 – High-Efficiency DIN Rail Power Supply for Industrial Control Systems

The MEAN WELL EDR-120-24 is a rugged, efficient, and space-saving DIN rail power supply built for modern industrial environments. Designed to meet the demands of automation, control systems, and factory applications, it delivers a consistent 120W of power. With a stable 24V DC output and a current of 5A, it supports a wide variety of electrical and electronic equipment.

This model belongs to MEAN WELL’s EDR-120 series and is engineered to be compact yet powerful. The unit mounts easily on standard TS-35/7.5 or TS-35/15 DIN rails, making it ideal for control cabinets and equipment panels. Its slim 40 mm width allows more components to be installed in the same space, optimizing panel design and minimizing clutter.

One of the EDR-120-24’s core strengths is its wide input voltage range. It accepts a full range of AC input from 90V to 264V, and DC input from 127V to 370V, allowing it to operate in different regions and under varying power conditions. This flexibility makes it an excellent choice for installations where consistent input sources cannot be guaranteed.

The power supply operates at a frequency of 47 to 63 Hz, ensuring compatibility with both 50 Hz and 60 Hz systems. This universality allows engineers and panel builders to use it globally without concern for grid variations. Whether installed in Asia, Europe, or North America, the EDR-120-24 adapts seamlessly.

On the output side, the unit provides a regulated 24V DC voltage, with a current rating of up to 5A. A built-in adjustable output range of 21.6V to 29V DC allows customization based on the specific needs of your devices or load requirements. This feature gives added flexibility, particularly in voltage-sensitive applications.

In terms of efficiency, the MEAN WELL EDR-120-24 performs impressively. With an efficiency rating of up to 88%, it ensures minimal energy loss and low heat generation during operation. This not only reduces electricity costs but also contributes to longer system life and less thermal stress on nearby components.

The unit is designed with passive air convection for cooling, eliminating the need for internal fans. This means fewer moving parts, reduced noise levels, and less maintenance over time. It’s a solid-state solution tailored for reliability in high-demand environments.

Protection is a key feature of the EDR-120-24. It includes safeguards for overvoltage, overcurrent, short circuit, and overload. These protections engage automatically, ensuring connected devices are safe from electrical damage. Once the fault condition is cleared, the power supply resumes normal operation without manual intervention.

The product meets several international safety and performance certifications, including UL508 and EN62368-1. It is also fully RoHS compliant, making it a responsible choice for organizations looking to meet environmental standards. The inclusion of green compliance ensures reduced hazardous substances in its design and manufacturing.

Physically, the EDR-120-24 is housed in a durable metal enclosure that measures 113.5 mm in length, 40 mm in width, and 125.2 mm in height. With a total weight of approximately 600 grams (1.32 lbs), the unit is both lightweight and tough, perfect for DIN rail-mounted setups inside electrical panels.

The device is built for demanding environments. It operates reliably in ambient temperatures ranging from -20°C to +60°C, making it suitable for both chilled enclosures and warm industrial zones. It also tolerates humidity levels from 20% to 90% RH (non-condensing), adding to its field versatility.

For storage, the power supply can withstand temperatures as low as -40°C and as high as +85°C without performance degradation. This robustness is especially important for systems that may be stored in warehouses or transported through varying climate zones before installation.

The ripple and noise level is controlled at ≤150mVp-p, providing clean and consistent power to sensitive devices. This is critical for applications like PLCs, sensors, and communication equipment, where voltage stability directly affects performance and accuracy.

Applications for the MEAN WELL EDR-120-24 are broad and cover many industrial and commercial sectors. It is a popular choice in industrial automation, powering devices such as programmable logic controllers (PLCs), machine tools, and robot controllers. It’s also suitable for process control systems, providing power to SCADA units, signal converters, and sensors.

In the building automation sector, it is frequently used in powering HVAC controllers, access control systems, and security alarm modules. In telecommunications and networking, it can provide reliable power to routers, switches, and PoE injectors. The stable output and strong protection features make it suitable even for mission-critical systems.

In factory automation, the EDR-120-24 helps drive components like conveyors, small motors, industrial printers, and barcode scanners. It also serves as a backup or primary power source in equipment power systems, making it a flexible choice for OEMs and system integrators.

Its long MTBF (mean time between failures) rating, exceeding 270,000 hours at full load and 25°C ambient temperature (as per Telcordia SR-332 standard), demonstrates the unit’s durability and long-term reliability. This translates to less downtime, reduced maintenance cost, and improved system uptime for your operations.

The installation process is straightforward and user-friendly. Thanks to its DIN rail clip, the unit snaps firmly into place without the need for screws or brackets. Terminals are clearly labeled and spaced for easy wiring, whether you’re connecting AC mains or DC loads.

With a proven track record and thousands of successful deployments across industries, the MEAN WELL EDR-120-24 remains one of the most trusted DIN rail power supplies in its class. Its balance of affordability, performance, and build quality makes it a preferred solution for engineers and technicians worldwide.

If you're seeking a reliable, efficient, and flexible power supply for industrial control, automation, or building systems, the EDR-120-24 offers a robust solution that fits most needs. It ensures safe power delivery, has global compliance certifications, and withstands the rigors of industrial usage.