# Power Supply Unit MEAN WELL WDR-120-24

**URL:** https://aio.lv/en/product--mean-well-wdr-120-24--1621115
**Data updated:** 2025-12-29 07:43 (EET)
**Category:** Other goods
**Manufacturer:** mean well
**Manufacturer code:** WDR-120-24
**EAN:** 4021087017770
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 110.49 €
**Prices and availability valid until:** 2026-08-24 23:59
**Price without VAT (21%):** 91.31 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mean-well-wdr-120-24--1621115

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 24.08.2026 | free |
| Pickup points | 27.08.2026 | 1.79 EUR |
| Courier delivery to door | 27.08.2026 | 4.99 EUR |

## Summary description

The MEAN WELL WDR-120-24 is a 120 W metallic power supply unit with an AC input voltage range of 180 - 550 V and a frequency of 47 - 63 Hz. It features passive cooling and has a mean time between failures (MTBF) of 268,000 hours. This unit is UL508 and IEC60950-1 CB approved, ensuring safety and reliability. Its compact dimensions (40 mm width, 113.5 mm depth, 125.2 mm height) make it suitable for various applications.

## Long description

The MEAN WELL WDR-120-24 is a 120 W metallic power supply unit designed for industrial and DIN-rail applications. It accepts a wide AC input voltage range of 180–550 V at 47–63 Hz, provides a 24 V DC output, and uses passive (free air convection) cooling. The unit includes a built-in constant current limiting circuit, a DC OK relay, and has been subjected to 100% full-load burn-in testing. Approvals include UL508 and IEC60950-1 CB; MTBF is 268,000 hours. Its compact form factor (40 mm × 113.5 mm × 125.2 mm) allows installation on TS-35/7.5 or 15 DIN rails.
Advantages
The WDR-120-24 offers a wide AC input range that supports both low and high-voltage AC supplies, passive cooling for silent operation without fans, and integrated protection with constant current limiting. The DC OK relay provides status signalling for system monitoring, and the unit is factory tested at full load to ensure reliability. Its DIN-rail compatibility and compact dimensions simplify installation in control cabinets.
Suitable for
Industrial control cabinets and automation systems
Machines and equipment requiring 24 V DC power
Environments where fanless, low-maintenance operation is preferred
Applications needing wide AC input tolerance (180–550 V)
Key specifications
Output power: 120 W
Output voltage: 24 V DC
AC input range: 180–550 V, 47–63 Hz
Cooling method: free air convection (fanless)
Protection: built-in constant current limiting
Indicators/contacts: built-in DC OK relay
Approvals: UL508, IEC60950-1 CB
MTBF: 268,000 hours
Dimensions (W×D×H): 40 × 113.5 × 125.2 mm
DIN-rail: TS-35/7.5 or 15
How to use
Mount the MEAN WELL WDR-120-24 on a TS-35/7.5 or TS-35/15 DIN rail inside a suitable enclosure. Connect the AC supply within the rated 180–550 V, observing correct wiring and grounding practices. Connect the 24 V DC output to the load, and use the DC OK relay output for remote monitoring or signalling. Ensure adequate clearance around the unit to allow natural convection cooling and avoid installing near heat sources that could raise ambient temperature beyond specified limits.
Usage recommendations
For reliable long-term operation, install the unit in a ventilated cabinet, avoid dust accumulation, verify input voltages are within the specified range, and use the DC OK relay for system status monitoring. Follow local electrical codes and the manufacturer’s installation instructions.

## Specifications

| Feature | Value |
|---|---|
| Mean time between failures (MTBF) | 268000 h |
| Safety | Ul508 approved, IEC60950-1 CB approved by SIQ, design refer to GL;(meet EN60204-1) |
| Operating relative humidity (H-H) | 20 - 95 |
| Storage temperature (T-T) | -40 - 85 |
| Operating temperature (T-T) | -25 - 70 |
| Storage relative humidity (H-H) | 10 - 95 |
| Height | 125.2 mm |
| Width | 40 mm |
| Depth | 113.5 mm |
| Product colour | Metallic |
| Input current | 0.7 - 1.2 |
| Efficiency | 91 % |
| Hold time | 50 ms |
| Rise time | 70 ms |
| Cooling type | Passive |
| Power protection features | Overload, Short circuit, Overheating, Over voltage |
| Voltage tolerance | 1.5 % |
| AC input frequency | 47 - 63 |
| AC input voltage | 180 - 550 |
| Total power | 120 W |

## FAQ

### How much does the Power Supply Unit MEAN WELL WDR-120-24 cost, and is it available for purchase?

The price is 110.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 106 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 24.08.2026 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. 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

### Where can I download the instructions for Power Supply Unit MEAN WELL WDR-120-24?

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/1621115/64167348_large.webp