EDR-120-24 – Reliable 24V Industrial Power Supply
- anadi automation
- Jul 4, 2025
- 3 min read
Updated: Jul 5, 2025
EDR-120-24 – Reliable 24V Industrial Power Supply for Space-Constrained Applications
The EDR-120-24 is a robust and energy-efficient DIN rail-mounted industrial power supply designed by MEAN WELL, a global leader in reliable power solutions. With its compact design, high efficiency, and durable construction, this 120-watt, 24V DC power supply is an ideal choice for automation systems, control panels, and industrial applications where consistent performance and space-saving installation are essential. The EDR series is known for its affordability without compromising on performance, and the EDR-120-24 is no exception.
Delivering a nominal output voltage of 24V DC at 5 amps, the EDR-120-24 is engineered to provide stable and regulated power to critical loads, including programmable logic controllers (PLCs), sensors, relays, HMI panels, and other low-voltage devices in control systems. The unit accepts a universal AC input range of 90–264VAC, and also supports 127–370VDC, making it suitable for global installations and environments with fluctuating mains voltage.
One of the key advantages of the EDR-120-24 is its slim profile, which measures just 32mm in width, making it ideal for applications with limited panel space. This narrow design allows more components to fit in compact control cabinets, supporting the growing trend of miniaturization in automation systems. Additionally, the unit is DIN rail mountable, conforming to TS-35/7.5 or 15 standards, ensuring quick and secure installation.
The power supply operates with an impressive efficiency rating of up to 88%, reducing energy loss and minimizing heat generation during operation. It is cooled by free air convection, eliminating the need for noisy or maintenance-heavy fans. This not only increases reliability but also extends the power supply’s service life, particularly in industrial environments where dust and vibrations are common.
The EDR-120-24 is equipped with a comprehensive set of protection features, including short circuit protection, overload protection (110–150% rated output power), overvoltage protection (27.6–32.4V), and over-temperature protection. These safeguards ensure that both the power supply and the connected devices remain safe during abnormal conditions such as power surges, short circuits, or excessive temperature buildup. The unit automatically recovers from most faults once the issue is resolved, contributing to system uptime and maintenance efficiency.
This model complies with a wide range of international safety and EMC standards, including UL 508, EN61000-6-2, and EN61000-6-4, making it suitable for use in commercial and industrial control equipment across North America and Europe. It can operate reliably in temperatures from -20°C to +60°C without derating and can handle brief voltage drops or brownouts with its holdup time of over 60ms at full load.
The output voltage is adjustable from 24V to 28V via a potentiometer, allowing for fine-tuning to suit specific load requirements. This flexibility is valuable in systems where a slightly higher or lower voltage is needed to accommodate voltage drops over long cable runs or specific input needs of connected devices.
If the EDR-120-24 encounters any issues such as voltage instability, overload shutdowns, or non-starting behavior, professional power supply repair services can diagnose the internal circuitry, including capacitor wear, diode failure, or thermal degradation, and restore the unit to working condition. This extends the product’s lifespan and reduces the cost of ownership over time.
In conclusion, the EDR-120-24 by MEAN WELL is a dependable, efficient, and compact power supply solution tailored for demanding industrial environments. With its combination of high reliability, safety features, and flexible voltage adjustment, it is a trusted choice for powering sensitive automation components where consistent 24V DC power is essential.
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