# Power Supply Unit MEAN WELL MDR-40-48 40W

**URL:** https://aio.lv/en/product--mean-well-mdr-40-48--1620824
**Data updated:** 2026-01-13 17:30 (EET)
**Category:** Other goods
**Manufacturer:** mean well
**Manufacturer code:** MDR-40-48
**EAN:** 4021087020893
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 22.47 €
**Prices and availability valid until:** 2026-08-03 23:59
**Price without VAT (21%):** 18.57 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mean-well-mdr-40-48--1620824

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Thursday | free |
| Pickup points | 14.07.2026 | 1.89 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

The MEAN WELL MDR-40-48 is a reliable 40W power supply unit designed for various applications. It features a wide input voltage range, high efficiency, and compact design, making it suitable for industrial and commercial use. With built-in short circuit, overload, and overvoltage protection, it ensures safe operation. Ideal for powering LED lighting, automation systems, and other electronic devices.

## Long description

The MEAN WELL MDR-40-48 40W power supply unit provides a compact and robust solution for converting AC mains to a stable 48V DC output. Designed for industrial and commercial environments, this DIN-rail mountable unit accepts a wide input voltage range and delivers up to 40 watts of continuous power in a small package. Built-in protection features maintain reliable operation under common fault conditions and support steady powering of LED lighting, automation controllers, sensors, and other low-voltage devices.
Advantages
The MDR-40-48 combines high conversion efficiency with a compact DIN-rail form factor to minimize cabinet space while reducing heat generation. Integrated protections against short circuit, overload and overvoltage enhance operational safety and reduce the risk of damage to connected equipment. Its wide input range and stable 48V output make it suitable for systems that require consistent voltage under varying mains conditions.
Suitable for
 LED lighting strips and fixtures that require a 48V DC supply
 Industrial automation devices such as PLCs, I/O modules and sensors
 Control cabinets and DIN-rail power distribution in commercial installations
 Low-voltage electronic devices and communication equipment
Key specifications
 Output voltage: 48 V DC nominal
 Output power: 40 W continuous
 Input voltage: wide AC input range suitable for standard mains
 Mounting: DIN-rail compatible enclosure for electrical cabinets
 Protections: built-in short circuit, overload and overvoltage protection
 Efficiency: high conversion efficiency to reduce energy loss and heat
 Cooling: convection-cooled design for silent operation
 Form factor: compact footprint to save panel space
How to use
Install the MDR-40-48 on a standard DIN rail inside a suitably rated enclosure. Connect the AC mains input following local electrical codes and ensure correct grounding. Connect the 48V DC output to the load with appropriately rated conductors and observe polarity. Verify load current does not exceed the unit's rated output current. After power-up, monitor for normal output voltage; the built-in protections will act automatically in case of short circuit, overload or overvoltage conditions.
Usage recommendations
Use the power supply within the specified ambient temperature range and allow adequate ventilation around the unit. Keep the load within the rated power to avoid triggering overload protection. For installations supplying LED lighting or sensitive electronics, consider inrush current and add appropriate upstream protection or soft-start circuitry if required. Follow local installation regulations and the manufacturer's installation instructions for safe and reliable operation.

## Specifications

| Feature | Value |
|---|---|
| Total power | 40 W |

## FAQ

### How much does the Power Supply Unit MEAN WELL MDR-40-48 cost, and is it available for purchase?

The price is 22.47 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 Thursday 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

## Image

https://aio.lv/img/cache/product/1620824/59841938_large.webp