LRS-350-48 Enclosed 48V Power Supply
The Mean Well LRS-350-48 is a single-output supply rated at 48V, 7.3A and 350.4W. Its 30mm-high metal enclosure uses a built-in DC fan for forced-air cooling. Select the AC input range using the switch before applying mains power.
| Parameter | Specification |
|---|---|
| Output voltage | 48V DC |
| Rated output current / power | 7.3A / 350.4W |
| Voltage adjustment | 43.2–52.8V |
| AC input | 90–132VAC / 180–264VAC, selected by switch |
| Frequency | 47–63Hz |
| Typical efficiency | 89% |
| Dimensions (L × W × H) | 215 × 115 × 30mm |
| Cooling | Built-in DC fan with on/off control |
| Working temperature | −25 to +70°C; derating applies |
Choosing a 48V replacement
Check the load voltage, required current, mounting points and airflow path. The voltage adjustment is a trim range for compatible 48V equipment. It does not make this unit a replacement for lower-voltage supplies. Refer to the specification notes for application limits and thermal derating.
Frequently Asked Questions
What is the rated power of LRS-350-48?
The 48V model is rated at 7.3A and 350.4W.
Does it automatically select 115V or 230V input?
No. The two AC input ranges are selected by a switch. Verify its position before connecting power.
Why is the fan not always running?
The LRS-350 includes fan on/off control. Fan operation depends on its internal temperature sensing; a stopped fan alone does not establish a fault.
Can the output be adjusted down to 24V?
No. The specified adjustment range is 43.2–52.8V. Use a 24V model for a 24V load.
Where can I find the wiring and dimensions?
The retained LRS-350 specification PDF includes the terminal assignments, mechanical drawing and derating curves.
Original Specification Image
