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MEAN WELL LRS-350-12 DC Switching Power Supply 12V 29A 350W for CCTV, Computer Project, 3D Printer, LED Strip Light, Router

4.8 4.8 out of 5 stars 1,066 ratings

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LRS-350-12:12V/29A
1 PACK

Purchase options and add-ons

Brand MEAN WELL
Color Silver
Connector Type Screw Terminal
Item Dimensions LxWxH 8.46 x 4.53 x 1.18 inches
Output Current 29 Amps

About this item

  • Output Voltage: 12V ; Rated Current & Rated Power: 29A, 348W
  • Input Switch Default on 115VAC; Efficiency Level: 85% ;
  • Input Voltage Range: 90 ~ 132VAC / 180 ~ 264VAC by Switch;
  • Full Protections: Short Circuit / Overload / Over Voltage /Over Temperature. Case temperature>50℃ FAN ON, Case temperature<40℃ FAN OFF;
  • Fan only spins when Case Temprature higher than 122℉

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$37.95
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Sold by Kahroba Electronics and ships from Amazon Fulfillment.
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MEAN WELL LRS-350-12 DC Switching Power Supply 12V 29A 350W for CCTV, Computer Project, 3D Printer, LED Strip Light, Router


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Product Description

2_Pack Available at $57 (Check SIZE: LRS-350-12:2_PACK)-CONDITION: 100% Brand New -DC VOLTAGE: 12V -CURRENT RANGE: 0~29A -RATED POWER: 348W -INPUT VOLTAGE RANGE: 90 ~ 132VAC / 180 ~ 264VAC by switch 240 ~ 370VDC (switch on 230VAC) -EFFICIENCY: 85% -PROTECTIONS: SHORT CIRCUIT / OVER LOAD / OVER VOLTAGE / OVER TEMPERATURE -WEIGHT:760g -DIMENSION: 215 x 115 x 30 mm -CASE MATERIAL: Metal case / Aluminum base -CERTIFICATE: UL/CB -WORKING TEMPERATURE: -25~70℃CASE temperature>50℃ FAN ON, CASE temperature<40℃ FAN OFF

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This Item
MEAN WELL LRS-350-12 DC Switching Power Supply 12V 29A 350W for CCTV, Computer Project, 3D Printer, LED Strip Light, Router
MEAN WELL LRS-350-12 DC Switching Power Supply 12V 29A 350W for CCTV, Computer Project, 3D Printer, LED Strip Light, Router
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Enclosed Type SMPS 348W 12V 29A LRS-350-12 Meanwell AC-DC Single Output Switching Power Supply LRS-350Series MEAN WELL Power Source
Details
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Price$37.95-27% $28.41
List:$39.00
-26% $32.41
List:$43.95
-5% $31.34
Typical:$32.99
-35% $28.65
List:$43.95
-24% $30.00
Typical:$39.56
Delivery
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Thursday, Apr 4
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Customer Ratings
Sold By
Kahroba Electronics
GESD Pleasure
Amtools
Angel house11
power supply mall
Amtools
output current
29 amps
30 amps
29 amps
14.6 amps
29 amps
output voltage
12 volts
12 volts
24 volts
12 volts
output wattage
350 watts
360 watts
350 watts
200 watts
350 watts
connector type
Screw Terminal
screw
Screw terminal
Screw terminal
model number
LRS-350-12
12v 30a
LRS-350-12
LRS-350-12
LRS-350-24
LRS-350 Series/LRS-350-12
weight
1.2 pounds
1.64 pounds
1 pounds

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Customer reviews

4.8 out of 5 stars
4.8 out of 5
1,066 global ratings

Customers say

Customers like the quality, performance, and adjustable output of the power supply. For example, they mention it's well made, works well, and has adjustable voltage. Some appreciate the value, and appearance of the product. Opinions are mixed on noise.

AI-generated from the text of customer reviews

38 customers mention34 positive4 negative

Customers like the performance of the power supply. They mention that it works well with no drama, has no issues, and works straight out of the box. Some say that the product is high quality and useful. Overall, most are satisfied with the performance and functionality of the product.

"...Nice, slim case, able to fine-tune the voltage, and very clean looking inside. A solid buy.Received the product in a timely manner...." Read more

"...It doesn't always run, so that's good. I might replace it with an AIO case and a larger fan. Great power supply so far." Read more

"...I seems to run pretty cool, the fan hasn't come on yet so I hope it is temperature controlled and will come on if it gets hot but I don't know as..." Read more

"...So, they are quite, in a electrical sense, and work reliably with my home brew 3D printer." Read more

38 customers mention35 positive3 negative

Customers are satisfied with the quality of the power supply. They mention that it is well-made, has a solid output, and is stable under maximum load. The components on the circuit board appear solid and there are no hot spots. The power supply is very stable, quiet, and has fewer hot spots than other cheap brands. Overall, customers are happy with their purchase and recommend it to others.

"...The body is well built, I never heard the fan come on, even after a fair bit of power draw, and the whole thing is utilitarian design, but well built..." Read more

"...TL;DR - The Meanwell power supply (sold by Hybridge) is a solid performer...." Read more

"This power supply has a 12 Volt fan and it is thermostatically controlled for a much quieter operation. Exceeds the factory power supply" Read more

"...Thoughts: It is a place to start, it seems to be assembled with good components, be mindful of the exposed contacts, I will be augmenting the..." Read more

36 customers mention36 positive0 negative

Customers are satisfied with the power supply. They mention that it works well, is quiet, and continues to supply power during power hits. Some say that it's a great power supply for enders and Prusa Mk3s. They also say that the internal fan only kicks on when needed.

"I used this power supply for some Ham radios. It worked well, and seems to power my radio stably...." Read more

"...I might replace it with an AIO case and a larger fan. Great power supply so far." Read more

"...It's working great on a 159W load in cold weather down to 10 F." Read more

"The MeanWell unit is very quiet and only runs the fan when needed. Plus it has UL and CSA certifications according to the label...." Read more

12 customers mention12 positive0 negative

Customers are satisfied with the adjustable output of the system power device. They mention that it is easily adjustable to 13.8 volts, stays at the exact voltage, and is steady and accurate. The unit is solidly made and holds the output voltage very accurately. It regulates well and is input voltage switchable.

"...Either way, the adjustable screw is available in case you need to tweak the voltage...." Read more

"...Nice, slim case, able to fine-tune the voltage, and very clean looking inside. A solid buy.Received the product in a timely manner...." Read more

"...this supply with 6 amps (well below its capacity) the output voltage was rock solid. Testing the unit on the air showed there was no audible hum...." Read more

"...The output voltage is adjustable. Presently using to power “12-volt” LED strips where the output is set at 10.5V so LEDs operate cooler...." Read more

10 customers mention10 positive0 negative

Customers appreciate the value of the system power device. They say it's the best bang for the buck, has quality, and is a good value.

"Pros: Affordable, slim profile, clean output, maybe 10% more efficient than cheaper version...." Read more

"...source but as long as you stay under those parameters they are very economical and very efficient." Read more

"...it was affordable and arrived in decent time and fixed my problem. I am thankful" Read more

"...Great power supply, great value." Read more

7 customers mention7 positive0 negative

Customers like the appearance of the system power device. They mention that it has a slim profile, a nice clean layout, and a utilitarian design. They also describe it as a quality unit in a small space.

"...on, even after a fair bit of power draw, and the whole thing is utilitarian design, but well built...." Read more

"...Nice, slim case, able to fine-tune the voltage, and very clean looking inside. A solid buy.Received the product in a timely manner...." Read more

"Pros: Affordable, slim profile, clean output, maybe 10% more efficient than cheaper version...." Read more

"This is a really great compact 24v Power Supply, I am currently using it with this great little speed controller and so far has worked flawless...." Read more

6 customers mention6 positive0 negative

Customers find the system power device easy to install. They mention that it's thin and easy to mount. Customers also appreciate the instructions to print a new cover for the switch and power connector. Overall, most are happy with the ease of use and functionality of the product.

"...Product was as advertised and install was easy. Components on circuit board appear solid and no hot spots." Read more

"...It came with instructions to print a new cover for the switch and power connector as it's different than the original. It's on Meanwell's website...." Read more

"...Well made and meets specs.The supply is thin and easy to mount.I can definitely recommend it." Read more

"...This replacement bolted in perfect with no modifications needed. Also solved the problem!" Read more

34 customers mention21 positive13 negative

Customers are mixed about the noise of the system power device. Some mention that it's super quiet, with no crazy coil whine or any high pitched noises. However, others say that the fan seems a bit loud and there is a loud electrical whine as the unit warms up.

"...has a 12 Volt fan and it is thermostatically controlled for a much quieter operation. Exceeds the factory power supply" Read more

"It’s quiet compared to the original power supply of the AnkerMake. Fan only comes on when it hits a certain temperature range A+ so far" Read more

"...60mm square, 15 mm thick. There was a mention that the fan seems a bit loud, and I would concur...." Read more

"...Testing the unit on the air showed there was no audible hum. One day I'll throw a oscilloscope on it to 'see' what is really going on...." Read more

Solid performer. Nice clean design.
5 Stars
Solid performer. Nice clean design.
Review of the MEANWELL LRS-350-24 DC switching power supplyTL;DR - The Meanwell power supply (sold by Hybridge) is a solid performer. Nice, slim case, able to fine-tune the voltage, and very clean looking inside. A solid buy.Received the product in a timely manner. Boxed nicely, and included mounting feet (which is nice). Picture one reflects that. The unit is input voltage switchable (115v or 230v)The unit internally has a nice clean layout. I did not look on the underside of the circuit board, only the top (pictured) side.The fan is removable (if you wish to add another). 60mm square, 15 mm thick. There was a mention that the fan seems a bit loud, and I would concur. Also, trying to determine what triggers the fan to come on. The docs seem to indicate based upon thermal temperature, but it would also appear to be based upon current draw. If I pull 6amps on the unit (out of 15) the power supply doesn't get warm however, the fan will kick on anyhow. It does seem variable in that if I decrease the load, the fan slows down. Fortunately, I have this mounted in a closet so it is not noticeable.One other mention about the fan. It is an ARX DC Brushless, 12v 0.13a, 15 cfm fan. If you google for that fan, it is sold on here for like $24 - $27 (elsewhere $16 to $18). For a basic fan, seems quite high in price considering the noise it produces.The power supply has external access to a trim-pot allowing to tweak the desired voltage. I took several voltage measurements of the unit itself (One of the pictures I combined all the differences to). Ultimately, there is a +/- of almost 5v swing.For a brief, I observed the following:24.19v - out of the box measurement20.89v - Adjusted all the way down29.94v - adjusted all the way up.Upper-right image on the measurement picture was just me setting it to 24v when I was done measuring.There are 6 terminals for output (3 for positive(+), 3 for negative(-)). There are three terminals for the main voltage (Neutral, Line, ground). About the only ding I give here is that unlike other power supplies on the market, the Meanwell does not come with that little plastic swing cover to cover over the terminals.I have a 6 amp load of LED strips, and wanted something that could handle double-that in the future, so I ended up with the 15amp (14.6a technically) power supply (leaving me 20% overhead so not ever fully loaded, which is how you should plan your projects). Final two pictures show's the supply working, and my mounted project :)All in all, I am happy with the purchase. It does what it is supposed-to.
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Top reviews from the United States

Reviewed in the United States on December 26, 2020
Style: LRS-350-12:12V/29ASize: 1 PACKVerified Purchase
One person found this helpful
Report
Reviewed in the United States on January 30, 2024
Style: LRS-350-12:12V/29ASize: 1 PACKVerified Purchase
Reviewed in the United States on October 23, 2020
Style: LRS-350-24:24V/14.6ASize: 1 PACKVerified Purchase
Customer image
5.0 out of 5 stars Solid performer. Nice clean design.
Reviewed in the United States on October 23, 2020
Review of the MEANWELL LRS-350-24 DC switching power supply

TL;DR - The Meanwell power supply (sold by Hybridge) is a solid performer. Nice, slim case, able to fine-tune the voltage, and very clean looking inside. A solid buy.

Received the product in a timely manner. Boxed nicely, and included mounting feet (which is nice). Picture one reflects that. The unit is input voltage switchable (115v or 230v)

The unit internally has a nice clean layout. I did not look on the underside of the circuit board, only the top (pictured) side.

The fan is removable (if you wish to add another). 60mm square, 15 mm thick. There was a mention that the fan seems a bit loud, and I would concur. Also, trying to determine what triggers the fan to come on. The docs seem to indicate based upon thermal temperature, but it would also appear to be based upon current draw. If I pull 6amps on the unit (out of 15) the power supply doesn't get warm however, the fan will kick on anyhow. It does seem variable in that if I decrease the load, the fan slows down. Fortunately, I have this mounted in a closet so it is not noticeable.

One other mention about the fan. It is an ARX DC Brushless, 12v 0.13a, 15 cfm fan. If you google for that fan, it is sold on here for like $24 - $27 (elsewhere $16 to $18). For a basic fan, seems quite high in price considering the noise it produces.

The power supply has external access to a trim-pot allowing to tweak the desired voltage. I took several voltage measurements of the unit itself (One of the pictures I combined all the differences to). Ultimately, there is a +/- of almost 5v swing.
For a brief, I observed the following:

24.19v - out of the box measurement
20.89v - Adjusted all the way down
29.94v - adjusted all the way up.

Upper-right image on the measurement picture was just me setting it to 24v when I was done measuring.

There are 6 terminals for output (3 for positive(+), 3 for negative(-)). There are three terminals for the main voltage (Neutral, Line, ground). About the only ding I give here is that unlike other power supplies on the market, the Meanwell does not come with that little plastic swing cover to cover over the terminals.

I have a 6 amp load of LED strips, and wanted something that could handle double-that in the future, so I ended up with the 15amp (14.6a technically) power supply (leaving me 20% overhead so not ever fully loaded, which is how you should plan your projects). Final two pictures show's the supply working, and my mounted project :)

All in all, I am happy with the purchase. It does what it is supposed-to.
Images in this review
Customer image Customer image Customer image Customer image Customer image Customer image Customer image Customer image
Customer imageCustomer imageCustomer imageCustomer imageCustomer imageCustomer imageCustomer imageCustomer image
22 people found this helpful
Report
Reviewed in the United States on February 2, 2024
Style: LRS-350-24:24V/14.6ASize: 1 PACKVerified Purchase
Reviewed in the United States on September 1, 2020
Style: RSP-500-24:24V/21ASize: 1 PACKVerified Purchase
Reviewed in the United States on November 12, 2021
Style: LRS-350-24:24V/14.6ASize: 1 PACKVerified Purchase
Reviewed in the United States on March 2, 2024
Style: LRS-350-24:24V/14.6ASize: 1 PACKVerified Purchase
Reviewed in the United States on September 18, 2021
Style: LRS-350-24:24V/14.6ASize: 1 PACKVerified Purchase

Top reviews from other countries

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Edwin Rafael Morales Seañez
5.0 out of 5 stars Excelente producto
Reviewed in Mexico on March 7, 2022
Style: LRS-350-24:24V/14.6ASize: 1 PACKVerified Purchase
G. D.
5.0 out of 5 stars Good one
Reviewed in Canada on January 26, 2022
Style: LRS-350-24:24V/14.6ASize: 1 PACKVerified Purchase
Shawn
3.0 out of 5 stars Doesn't come with mounting brackets like in the main picture
Reviewed in Canada on July 28, 2023
Style: LRS-350-24:24V/14.6ASize: 1 PACKVerified Purchase