MEAN WELL LRS-350-12
MEAN WELL LRS-350-12 Uputstvo za upotrebu preklopnog napajanja
Model: LRS-350-12 | Brand: MEAN WELL
1. Uvod
This manual provides essential information for the safe and efficient use of your MEAN WELL LRS-350-12 Switching Power Supply. This unit is designed to provide a stable 12V DC output from an AC input, suitable for various applications including LED projects, industrial automation, and electronic instruments.
Molimo vas da pažljivo pročitate ovaj priručnik prije instalacije i rada i sačuvate ga za buduću upotrebu.
2. Sigurnosna uputstva
- Električna opasnost: Ovaj uređaj radi s visokom jačinom zvukatage. Instalaciju i održavanje treba obavljati samo kvalificirano osoblje.
- Ulazni voltage Izbor: Uverite se da je ulazna voltage switch is set correctly (115VAC or 230VAC) before connecting to power. Incorrect setting can cause damage.
- ventilacija: Ensure adequate ventilation around the power supply to prevent overheating. Do not block ventilation openings.
- uzemljenje: Always connect the protective earth (ground) terminal to a proper ground connection.
- Zaštita od preopterećenja: Do not exceed the rated output current (29A) or power (348W) to prevent damage and ensure safe operation.
- Okruženje: Do not expose the unit to moisture, rain, or excessive dust. Operate within specified temperature and humidity ranges.
3. Značajke proizvoda
- Output Voltage: 12 V DC
- Nazivna struja: 29A
- Nazivna snaga: 348W
- Ulazni voltage Range: 90 ~ 132VAC / 180 ~ 264VAC (selectable by switch)
- Built-in cooling FAN with ON-OFF control (activates at RTH3 ≥ 50℃, turns off at RTH3 ≤ 40℃)
- Zaštite: Kratki spoj, Preopterećenje, Preko Voltage, Previsoka temperatura
- Certifications: UL and CE
4. Postavljanje i instalacija
Slijedite ove korake za pravilnu instalaciju vašeg LRS-350-12 napajanja.
4.1 Raspakivanje
Carefully remove the power supply from its packaging. Inspect the unit for any physical damage. If damage is found, do not proceed with installation and contact your supplier.
4.2 Input Voltage Izbor
Before connecting any power, ensure the AC input voltagPrekidač za izbor je postavljen na ispravnu jačinu zvukatage for your region (115VAC for North America, 230VAC for most other regions). This switch is typically located on the side of the unit.

Slika: Sa strane view of the LRS-350-12 power supply, highlighting the red switch for AC input voltage selection (115V/230V).
Upozorenje: Failure to set the correct input voltage before powering on will result in damage to the unit.
4.3 Ožičenje
The LRS-350-12 uses screw terminal blocks for both AC input and DC output connections. Refer to the labels on the unit for correct terminal identification.

Slika: Detaljna view of the LRS-350-12 terminal block, showing connections for AC input (L, N, Ground) and DC output (+V, -V).
- AC ulaz: Connect your AC mains power to the terminals labeled 'L' (Live), 'N' (Neutral), and '⊗' (Ground). Ensure secure connections.
- DC izlaz: Connect your load to the terminals labeled '+V' (Positive 12V DC) and '-V' (Negative/Ground). Multiple '+V' and '-V' terminals are provided for convenience and to distribute current.
- Voltage Podešavanje: A small potentiometer (labeled 'V.ADJ' or similar) is available near the output terminals to fine-tune the output voltage within a small range. Use a small screwdriver to adjust if necessary.
Video: Prekorview of the Meanwell LRS 350 12 Power Supply, demonstrating the AC input, DC output terminals, and the voltage selection switch. This video provides a visual guide to the physical layout and basic connections of the power supply.
5. Uputstvo za upotrebu
- Početno napajanje: After all connections are secure and the input voltage switch is correctly set, apply AC power to the unit.
- LED indikator: A green LED indicator (if present) will illuminate, signifying that the power supply is operational.
- Učitavanje veze: Connect your 12V DC load to the output terminals. Ensure the total current draw does not exceed 29A.
- ventilator za hlađenje: The built-in cooling fan operates automatically. It will turn on when the internal temperature (RTH3) reaches 50℃ and turn off when it drops below 40℃. This ensures optimal operating temperature.
6. Održavanje
- čišćenje: Periodically clean the exterior of the power supply with a dry, soft cloth. Ensure ventilation openings are free from dust and debris to maintain proper airflow for the cooling fan.
- Provjere veze: Regularly inspect all wiring connections to ensure they are tight and secure. Loose connections can lead to poor performance or safety hazards.
- Uslovi okoline: Ensure the operating environment remains within the specified temperature and humidity ranges to prolong the lifespan of the unit.

Slika: Vrh view of the LRS-350-12 power supply, illustrating the cooling fan and ventilation slots crucial for heat dissipation.
7. Otkrivanje problema
| Problem | Mogući uzrok | Rješenje |
|---|---|---|
| Nema izlaznog voltage / Uređaj se ne uključuje |
|
|
| izlaz voltage je netačno |
|
|
| Unit overheating / Fan constantly running at high speed |
|
|
8. Specifikacije
| Feature | Vrijednost |
|---|---|
| Naziv modela | LRS-350-12 |
| Brand | MEAN WELL |
| Output Voltage | 12V |
| Nazivna struja | 29 Amps |
| Output Wattage | 350 Watts |
| Ulazni voltage domet | 90 ~ 132VAC / 180 ~ 264VAC (by Switch) |
| Metoda hlađenja | Air (Built-in Fan) |
| Dimenzije artikla (D x Š x V) | 8.46 x 4.53 x 1.18 inča |
| Težina artikla | 760 grama |
| Zaštite | Short Circuit / Overload / Over Voltage / Previše temperature |
| Kompatibilni uređaji | Industrial Automation Machinery, Industrial Control Systems, Mechanical and Electrical Equipment, Electronic Instruments, Equipment, or Apparatus |
| Tip konektora | Vijčani terminalni blok |
| Proizvođač | MEAN WELL ENTERPRISES CO., LTD. |
| UPC | 645312123032 |
9. Garancija i podrška
For warranty information, please refer to the documentation provided with your purchase or contact your authorized MEAN WELL distributor or reseller. Warranty terms and conditions may vary by region and point of purchase.
For technical support or further inquiries, please visit the official MEAN WELL website or contact their customer service department. The manual reference on the product label points to www.meanwell.com/manual.html za dodatne resurse.
Povezani dokumenti - LRS-350-12
![]() |
MEAN WELL LRS-350 serija 350W prekidačko napajanje sa jednim izlazom Detaljne specifikacije i karakteristike MEAN WELL LRS-350 serije 350W prekidačkog napajanja sa jednim izlazom, zatvorenog tipa. Pokriva ulazni volumen.tage, output voltage, nazivne struje, efikasnost, zaštite, primjene i mehaničke dimenzije. |
![]() |
MEAN WELL LRS-350 serija 350W jednostruko izlazno preklopno napajanje - Tehničke specifikacije Detailed technical specifications for the MEAN WELL LRS-350 series of 350W single-output enclosed switching power supplies, including features, applications, electrical specifications, mechanical dimensions, and safety certifications. |
![]() |
Mean Well LRS-350 serija 350W jednostruko izlazno preklopno napajanje Detaljne specifikacije i karakteristike Mean Well LRS-350 serije 350W prekidačkog napajanja sa jednim izlazom, zatvorenog tipa, uključujući tehničke podatke, primjenu i sigurnosne informacije. |
![]() |
MEAN WELL LRS-350 Serija: 350W jednostruko izlazno preklopno napajanje Detaljne specifikacije, karakteristike i tehničke informacijeview za MEAN WELL LRS-350 seriju 350W zatvorenog prekidačkog napajanja s jednim izlazom, uključujući dimenzije, sigurnosnu usklađenost i radne karakteristike. |
![]() |
MEAN WELL LRS-350 系列 350W 单组输出电源供应器 技术规格书 MEAN WELL LRS-350系列是一款350W单组输出封闭型电源供应器, 提供从3.3V到48V的多种输出电压。本文件详细介绍了其特性、应用、电气规格、减额曲线、静态特性曲线及机构尺寸,适用于工业自动化、控制系统和电子设备等领域。 |
![]() |
MEAN WELL LRS-100 serija: Tehnički list napajanja od 100 W s jednim izlazom Detaljne tehničke specifikacije, karakteristike, primjene i mehanički podaci za MEAN WELL LRS-100 seriju prekidačkih napajanja od 100 W s jednim izlazom. Uključuje specifikacije ulaza/izlaza, zaštitne karakteristike, podatke o okolišu, sigurnosne certifikate i dimenzijske informacije. |
Ask a question about this manual
Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.





