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MEAN WELL LRS-350-12 Switching Power Supply 348W 12V 29Amp Single Output (LRS Series 350W 12V) for LED Project9.4Our score 4 photos
MWBrandMEAN WELLMWMEAN WELL5 products in our catalogSee all MEAN WELL products →ID DBD-18347

MEAN WELL LRS-350-12 Switching Power Supply 348W 12V 29Amp Single Output (LRS Series 350W 12V) for LED Project

9.4/10 our score 4.7 (256 ratings on Amazon)

Output Voltage: 12V; Rated Current & Rated Power: 29A, 348W

Form FactorATX

About this item

  • Output Voltage: 12V; Rated Current & Rated Power: 29A, 348W
  • Input Voltage Range: 90 ~ 132VAC / 180 ~ 264VAC by Switch
  • Input Switch Default on 115VAC for US and CA; UL and CE Certificated
  • Built-in cooling FAN ON-OFF control, RTH3 Reaches 50℃, FAN ON, Under 40℃, FAN OFF
Category: Tools & Home Improvement › Low Voltage TransformersRanked #99 of 704 in Tools & Home Improvement
9.4Our score
Our verdict

Output Voltage: 12V; Rated Current & Rated Power: 29A, 348W

Ranked #99 in Tools & Home Improvement · 4 things we like

Quick answer The MEAN WELL LRS-350-12 Switching Power Supply scores 9.4/10 with us. Amazon owners rate it 4.7 out of 5 across 256 reviews, above the 4.5 average of the 9 low voltage transformers we track. It was listed at $29.98 on Amazon when we last checked in September 2026.

LRS-350-12

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Product information

22 specifications
Compatible Devices(function(f) {var _np=(window.P._namespace("DetailPageProductOverviewTemplatesJava"));if(_np.guardFatal){_np.guardFatal(
Connector Type Used on CableScrew Terminal Block
Output Wattage350 watts
Form FactorATX
Wattage350 watts
Cooling MethodAir
Current Rating29 A
Number of Fans1
Maximum Input Voltage264 volts_of_alternating_current
Minimum Input Voltage90 volts_of_alternating_current
Upper Temperature Rating70 °C
System Bus Connector Type20+4 Pin
Item Dimensions8.46 x 4.53 x 1.18 inches
Item Weight760 g
Model Namelrs,lrs-350-12
BrandMEAN WELL
Number of Packs1
Number of Items1
Unit Count1 Count
Model NumberLRS-350-12
Mfr Part NumberLRS-350-12
Connector TypeScrew Terminal Block

Pros & cons

What we like
  • Output Voltage: 12V; Rated Current & Rated Power: 29A, 348W
  • Input Voltage Range: 90 ~ 132VAC / 180 ~ 264VAC by Switch
  • Input Switch Default on 115VAC for US and CA; UL and CE Certificated
  • Built-in cooling FAN ON-OFF control, RTH3 Reaches 50℃, FAN ON, Under 40℃, FAN OFF
What could be better

    MEAN WELL LRS-350-12 Switching Power Supply: questions & answers

    Is the MEAN WELL LRS-350-12 Switching Power Supply worth buying?

    Yes, it is one of the stronger picks in its group. We score the MEAN WELL LRS-350-12 Switching Power Supply 9.4 out of 10. Amazon owners rate it 4.7 out of 5 across 256 reviews, above the 4.5 average of the 9 low voltage transformers we track.

    How much does the MEAN WELL LRS-350-12 Switching Power Supply cost?

    It was listed at $29.98 on Amazon when we last checked in September 2026. That is more than the $22.86 median for low voltage transformers in our catalog. Amazon prices change daily, so use the price button on this page to see the current figure.

    What are good alternatives to the MEAN WELL LRS-350-12 Switching Power Supply?

    Similar, well-rated low voltage transformers in our catalog: NIYIPXL LED Driver 60 Watts Waterproof IP67 Power (9.0/10, 4.5 stars from 1,127 owners); inShareplus 24V 400W LED Power Supply (9.2/10, 4.6 stars from 92 owners); NIYIPXL LED Driver 60 Watts 24V DC Low Voltage (9.0/10, 4.6 stars from 216 owners).

    NIYIPXL LED Driver 60 Watts Waterproof IP67 PowerinShareplus 24V 400W LED Power SupplyNIYIPXL LED Driver 60 Watts 24V DC Low Voltage

    Customer reviews

    All reviews on Amazon
    4.7256 global ratings
    5 star100%
    4 star0%
    3 star0%
    2 star0%
    1 star0%

    Breakdown from the 9 most helpful reviews we imported.

    T
    Tyler
    Verified purchaseAugust 24, 2026
    Works great. Quiet

    Love this meanwell. Got a second one recently. Running 2 sets of 3 gekkoscience gekkoaxe gt’s for Bitcoin mining. Nice quiet psu

    J
    JPL WVL
    Verified purchaseAugust 2, 2026
    Great quality 6 months of use

    Works great without any issues for powering a car subwoofer amp on my home system.

    R
    Roger Monarch
    Verified purchaseJanuary 25, 2026
    Rock Solid Power for My xLights Christmas Display!

    The go-to power supply for serious Christmas light enthusiastsIf you're in the xLights/pixel light community, you already know Mean Well is the name to trust – and the LRS-350-12 delivers exactly what you need.My setup:I'm running a Kulp32 board and using FOUR of these power supplies to power my house Christmas display. They've been absolutely bulletproof through the entire season – rain, cold temperatures, hours of run time every night – zero issues.Why these work so well:Clean, stable 12V power keeps my pixels running flawlessly29 amps gives me plenty of juice for multiple pixel stringsCompa

    S
    Sara
    Verified purchaseMay 14, 2026
    Landscape lighting power supply.

    Very solid PSU for a very good price. Running this inside of an outdoor enclosure to power landscape pathway lighting and also running a Dig-Quad for WLED of some RGBW lighting. Doesn’t get too hot and is much cheaper than buying a landscape low voltage transformer.

    J
    J. Bergman
    Verified purchaseAugust 13, 2026
    Great power for 2 actuators

    Working great for powering my 2 linear actuators lifting my hidden in-floor basement hatch door.

    B
    Branden Stahl
    Verified purchaseJanuary 31, 2026
    Great quality

    For such a low price I'm impressed by the quality! It keeps itself cool with the fan, and outputs nearly exactly 24.0v. Works perfect for my 3d printer projects!

    S
    stanley flinchum
    Verified purchaseMarch 1, 2026
    Great power supply!!!

    I use these for ham radio, One on a vhf 80 watt radio, and one on a 100 watt hf radio, they have been soild!! no issue for me, the only noise i may get from the supply is when im on 160 meters, everything else is clean

    A
    Aaron Kobel
    Verified purchaseJanuary 4, 2026
    Bulletproof 12V Power – Runs Cool and Never Quits!

    I’ve been using this MEAN WELL LRS-350-12 power supply for about six months now to run a big LED strip setup in my garage workshop, and it’s been rock solid. I’m pulling close to 25-26 amps continuously (around 300W) with multiple COB strips and some fans, and this thing doesn’t even get warm— the built-in fan kicks in quietly when needed and keeps everything cool.Hooked it up to a terminal block, adjusted the voltage trim pot to exactly 12.0V, and it’s held steady ever since, no ripple or droop even under full load. The build quality is typical Mean Well—thick metal case, good screw terminals

    Customer reviews are shown as published on Amazon and are not written by Do Best Deal.