LRS-350-12 Power Supply for 12V Equipment
The Mean Well LRS-350-12 is the 12V version of the LRS-350 enclosed power supply series. It provides a rated 29A output and 348W of power for compatible 12V equipment. A built-in fan provides forced-air cooling in a 215 × 115 × 30mm case.
| Parameter | Specification |
|---|---|
| DC output | 12V |
| Rated current | 29A |
| Rated power | 348W |
| Output adjustment | 10.2–13.8V |
| AC input | 90–132VAC / 180–264VAC, switch-selectable |
| Frequency | 47–63Hz |
| Dimensions (L × W × H) | 215 × 115 × 30mm |
| Cooling | Built-in fan with on/off control |
| Operating temperature | −25 to +70°C; follow derating curves |
Load and replacement checks
Confirm that all connected devices require 12V and calculate their combined load. Check the input selector before connection, provide the required protective earth and leave space for fan airflow. Use the PDF’s terminal layout and mounting drawing when replacing an existing unit.
Frequently Asked Questions
Does the LRS-350-12 supply 350W?
Its model-specific rating is 12V at 29A, or 348W. The series name is LRS-350.
Can I adjust the output to 24V?
No. The listed adjustment range is 10.2–13.8V. Choose a 24V model for a 24V system.
Can it run from 115V AC mains?
Yes, with the input switch correctly set for the 90–132VAC range. The other switch setting supports 180–264VAC.
Why does the cooling fan stop at times?
The supply has built-in fan on/off control. Keep the ventilation path clear even when the fan is not running.
Can this power a 5V LED display module directly?
No. A module requiring 5V must use a suitable 5V supply. Verify module voltage before wiring.
Product Photos
