EDR-120-24 120W 24V Mean Well Switching Power Supply - Reliable

Our review of the EDR-120-24 finds it is a practical choice for technicians and small system integrators who need a compact, convection-cooled 24V supply with reliable protection features. The biggest reason to buy is its combination of industrial approvals and a full set of protections in a lightweight DIN-rail package, making it suitable for control panels and automation projects where space and thermal management matter. The review focuses on real-world fit, build details, and whether this Mean Well-based unit delivers consistent 24V output under typical loads.

Key Features

• Universal AC input: Accepts a wide mains range so it can be used across different site voltages without extra configuration.
• Full protections: Built-in short circuit, overload, over voltage and over temperature protection helps safeguard connected equipment and reduces downtime risk.
• DIN-rail mounting: Can be installed on TS-35 rails for easy integration into control cabinets and industrial enclosures with minimal effort.
• Convection cooled: Passive cooling means no fan noise and fewer moving parts to maintain, improving reliability in dusty or confined spaces.
• Industrial immunity: Designed to EN61000-6-2 level for improved resistance to electrical interference in industrial environments.
• 120W output capability: Supplies up to 5A at 24V, enough for many PLC modules, sensors and small actuator loads.

Who It's For

The EDR-120-24 is best for electricians, panel builders and DIY automation users who need a compact 24V power source with industrial approvals and integrated protections. It suits small to medium control cabinets, lab benches, and retrofit projects where a reliable, convection-cooled supply is preferable to fan-cooled alternatives.

Users who need extremely high-efficiency, modular hot-swap supplies or integrated battery backup should look elsewhere; this unit is focused on dependable, everyday industrial use rather than advanced redundancy or server-room power features.

Pros & Cons

Pros

• Industrial certification and immunity make it a dependable choice in electrically noisy environments.
• Convection cooling eliminates fan maintenance and reduces audible noise in installations.
• Comprehensive protection suite reduces the chance of failures propagating to connected devices.
• Compact, lightweight DIN-rail form factor simplifies panel layout and handling.

Cons

• Not designed for hot-swap redundancy or integrated UPS, so systems needing uninterrupted power should add an external backup.

Specifications

Manufacturer	MEAN WELL
Output Power	120W
Output Voltage	24VDC
Output Current	5A
Operating Temperature	-10C to 70C
Humidity	0-95%
Certifications	CE, FCC, RoHS, UL508

Our Verdict

The EDR-120-24 is a solid value for engineers and installers needing a compact, convection-cooled 24V supply with industrial approvals and multiple protections. It performs well for control panels and general automation tasks, offering dependable output and easy DIN-rail mounting without unnecessary complexity.

Frequently Asked Questions

Can this be mounted on a standard DIN rail?
Yes, it is designed for TS-35 DIN-rail mounting and fits common industrial rails.

Does it require a fan or external cooling?
No, the unit uses free air convection cooling and does not include a fan.

What protections are built in?
It includes short circuit, overload, over voltage and over temperature protection to protect both the supply and connected devices.