# Power Supply Unit MEAN WELL SDR-120-12 120W Metallic

**URL:** https://aio.lv/en/product--mean-well-sdr-120-12--3256966
**Data updated:** 2026-02-17 10:59 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** mean well
**Manufacturer code:** SDR-120-12
**EAN:** 4021087017985
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 59.99 €
**Prices and availability valid until:** 2026-07-26 23:59
**Price without VAT (21%):** 49.58 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mean-well-sdr-120-12--3256966

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.89 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

The MEAN WELL SDR-120-12 is a 120W metallic power supply unit with an AC input voltage range of 88-264V. It features a peak power of 180W and an impressive MTBF of 289900 hours, ensuring reliability. Compliant with safety standards EN60950-1 and UL508, it measures 40mm in width, 113.5mm in depth, and 125.2mm in height. With a rise time of 60ms, it is ideal for various applications.

## Long description

The MEAN WELL SDR-120-12 120W Metallic is a compact industrial-grade DIN-rail power supply designed for stable 12 V DC output in control cabinets, automation systems and other electrical installations. It accepts a wide AC input range of 88–264 V, delivers a continuous 120 W with 150% short-term peak capability and reaches up to 91% efficiency. Constructed with a metal housing and intended for TS-35/7.5 or TS-35/15 DIN-rail mounting, the unit includes active PFC (power factor \> 0.93), a built-in DC OK relay contact and meets recognised safety standards for industrial use.
Advantages
The SDR-120-12 offers high conversion efficiency (up to 91%) which reduces heat dissipation and lowers energy losses in continuous operation. Its 150% peak load capability and 100% full-load burn-in testing improve reliability under transient conditions. The built-in active power factor correction (PF \> 0.93) ensures better mains compatibility and lower harmonic distortion. A metal enclosure and compliance with EN60950-1 and UL508 provide mechanical durability and safety certification for industrial environments.
Suitable for
 Industrial control cabinets and PLC power supply
 Automation and machine control systems
 Security and access control equipment
 Building management and HVAC controllers
 Telecommunications and network devices requiring 12 V DC
Key specifications
 Output voltage: 12 V DC
 Rated output power: 120 W continuous
 Peak output capability: up to 150% short-term (180 W peak)
 Input voltage range: 88–264 V AC
 Efficiency: up to 91%
 Power factor correction: active PFC, PF \> 0.93
 MTBF: 289,900 hours (typical)
 Rise time: 60 ms
 Enclosure: metallic housing, DIN-rail mountable (TS-35/7.5 or 15)
 Built-in DC OK relay contact
 Full-load burn-in test: 100%
 Safety standards: EN60950-1, UL508
 Dimensions (W×D×H): 40 mm × 113.5 mm × 125.2 mm
How to use
Mount the SDR-120-12 on a standard TS-35 DIN rail and secure the unit according to installation instructions. Connect the AC supply within the 88–264 V range to the input terminals and verify correct polarity on the 12 V DC output before connecting loads. Observe the built-in DC OK relay to monitor output status and allow integration with supervisory systems. Ensure adequate ventilation around the metallic housing and follow local wiring regulations and grounding requirements during installation.
Usage recommendations
For reliable long-term operation, place the power supply in a ventilated enclosure free from excessive dust, vibration and heat sources. Consider the 150% peak capability when sizing backups or transient-heavy loads, and use proper wiring and overcurrent protection on both input and output circuits. Periodic inspection of connections and verification of the DC OK relay contact are recommended as part of preventive maintenance.

## Specifications

### Power

| Feature | Value |
|---|---|
| Total power | 120 W |
| Efficiency | 89 % |
| Power Factor Correction (PFC) type | Active |
| Peak power | 180 W |
| Hold time | 20 ms |
| Power protection features | Short circuit, Overload, Overheating, Over voltage |
| Power factor | 0.93 |
| AC input frequency | 47 - 63 |
| AC input voltage | 88 - 264 |

### Performance

| Feature | Value |
|---|---|
| Mean time between failures (MTBF) | 289900 h |

### Design

| Feature | Value |
|---|---|
| Product colour | Metallic |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.67 kg |
| Height | 125.2 mm |
| Width | 40 mm |
| Depth | 113.5 mm |

### Operational conditions

| Feature | Value |
|---|---|
| Operating relative humidity (H-H) | 20 - 95 |
| Storage temperature (T-T) | -40 - 85 |
| Operating temperature (T-T) | -25 - 70 |

### Other features

| Feature | Value |
|---|---|
| Rise time | 60 ms |

### Safety regulation & standards

| Feature | Value |
|---|---|
| Safety | EN60950-1, UL508 |

## FAQ

### How much does the Power Supply Unit MEAN WELL SDR-120-12 cost, and is it available for purchase?

The price is 59.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 44 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 06.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All mean well products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized mean well service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: total power, efficiency, weight, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for Power Supply Unit MEAN WELL SDR-120-12?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/3256966/58303980_large.webp