Mean Well EDR-120-12 120W 12V 10A Switching Power Supply - Reliable

Our review of the Mean Well EDR-120-12 finds it best suited to installers and hobbyists who need a compact, industrial-grade 12V source with reliable protections. The single biggest reason to buy is its balanced combination of a 120W continuous rating and built-in safety features, including short-circuit, overload, over-voltage and over-temperature protection, which make it a dependable choice for control cabinets and bench power needs. Cooling by free air convection and DIN rail compatibility simplify installation and reduce ongoing maintenance compared with fan-cooled alternatives.

Key Features

• 120W output: Delivers a steady 12V at up to 10A, providing reliable power for small industrial controllers and peripherals.
• Full protections: Integrated short circuit, overload, over-voltage and over-temperature protections help safeguard connected devices and the supply itself.
• DIN rail mountable: Can be installed on TS-35 rails for neat, secure mounting inside control panels and enclosures.
• Wide operating range: Rated for -10C to 70C and 0-95% humidity, making it suitable for demanding environments when ventilation allows.
• Certifications: CE, FCC and RoHS compliance provides reassurance for use in regulated installations.
• Industrial immunity: Meets EN61000-6-2 level, offering enhanced resistance to electromagnetic disturbances common in industrial settings.

Who It's For

This unit is aimed at electrical installers, system integrators and advanced hobbyists who need a compact, reliable 12V supply for automation equipment, CCTV, access control, or bench test setups. The DIN rail form factor and industrial immunity testing make it particularly appropriate for control cabinets and factory floors where space and electromagnetic noise are considerations.

Those who require very high power margins, multiple isolated outputs, or active fan cooling in extreme thermal environments should consider larger power supplies or multi-output modules instead. For simple consumer electronics or portable use, the industrial mounting and installation considerations may be more than necessary.

Pros & Cons

Pros

• Solid 120W continuous output at 12V, suitable for many control and peripheral loads.
• Comprehensive protective features reduce risk to connected equipment during faults.
• DIN rail compatibility and convection cooling keep installations compact and quiet.
• Certified to CE, FCC and RoHS and tested to industrial immunity standards for tougher environments.

Cons

• No active fan cooling, so it relies on ambient airflow and may need extra ventilation in enclosed, high-temperature installations.
• Input specification lists DC 24V 63Hz in the source details, which is unusual wording and may require verification for AC mains wiring in some projects.

Specifications

Output Power	120W
Output Voltage / Current	12V DC / 10A
Input Voltage	DC 24V 63Hz (see installation notes)
Operating Temperature	-10C to 70C
Humidity	0-95% non-condensing
Weight (Net / Gross)	0.6Kg / 0.8Kg
Certifications	CE, FCC, RoHS; UL508 approved

Our Verdict

The Mean Well EDR-120-12 is a practical, value-oriented industrial 12V supply that pairs useful safety features with a compact DIN rail design. It is a smart buy for installers and hobbyists who need a quiet, convection-cooled 120W source for control panels and similar equipment, provided the installation allows for adequate ventilation and confirms input wiring requirements.

Frequently Asked Questions

Can this be mounted on a standard DIN rail?
Yes, it is designed for TS-35 DIN rail mounting for secure installation inside control cabinets.

Does it have built-in protections?
Yes, it includes protections for short circuit, overload, over-voltage and over-temperature to protect itself and connected devices.

Is it suitable for high-temperature enclosures?
It is rated to 70C but relies on free air convection, so extra ventilation is recommended for hot or enclosed installations.