# Power Adapter MEAN WELL AD-55B

**URL:** https://aio.lv/en/product--mean-well-ad-55b--1621689
**Data updated:** 2025-12-29 07:43 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** mean well
**Manufacturer code:** AD-55B
**EAN:** 4021087017688
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 48.49 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 40.07 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mean-well-ad-55b--1621689

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

The MEAN WELL AD-55B is a reliable power adapter with an input voltage range of 88-264 V and an output power of 55 W. It provides a stable output voltage of 26.5 V, making it suitable for various applications. The adapter is RoHS compliant, ensuring it meets environmental standards. With dimensions of 97 mm in width, 159 mm in depth, and 38 mm in height, it is compact and easy to integrate into your setup. Each pack contains 24 units, ideal for bulk purchases.

## Long description

The MEAN WELL AD-55B is an enclosed AC-DC power adapter with an integrated UPS function, delivering combined outputs of 27.6 Vdc at 2 A and 26.5 Vdc at 0.16 A. It accepts a wide input range of 88–264 Vac and provides up to 55 W of output power in a compact housing (97 × 159 × 38 mm). The unit is RoHS compliant and designed for reliable continuous operation in equipment requiring stable low-voltage DC supply and backup capability.
Advantages
The AD-55B offers a wide input voltage range for global compatibility and an internal UPS function to maintain power continuity during mains interruptions. Its dual-output arrangement supplies both a higher-current 27.6 V rail and a small auxiliary 26.5 V rail, allowing simultaneous powering of primary loads and auxiliary circuits. The compact metal enclosure simplifies integration into control cabinets and other confined spaces.
Suitable for
Industrial control systems and automation equipment
Telecommunication and network devices requiring a backup supply
Access control, alarm panels and security devices
Embedded electronics with primary and auxiliary DC rails
Key specifications
Brand: mean well
Model (MPN): AD-55B
Input: 88–264 Vac
Output: 27.6 Vdc at 2 A + 26.5 Vdc at 0.16 A
Output power: 55 W
Compliance: RoHS
Dimensions: 97 × 159 × 38 mm
Pack quantity: 24 units per pack
EAN: 4021087017688
How to use
Mount the AD-55B in a well-ventilated enclosure or on a suitable surface according to the device dimensions. Connect the AC input to a properly rated mains supply within the specified 88–264 Vac range. Wire the DC outputs to the corresponding loads, observing correct polarity and current limits for the 27.6 V/2 A and 26.5 V/0.16 A rails. Verify output voltages before connecting sensitive electronics and follow local electrical codes during installation.
Usage recommendations
For reliable operation, avoid installing the adapter near heat sources or in sealed compartments without ventilation. Use appropriate fusing on the input and output circuits and ensure the environment stays within the manufacturer's ambient temperature and humidity limits. When multiple units are installed, allow spacing for airflow to prevent overheating.

## Specifications

| Feature | Value |
|---|---|
| Input voltage | 88 - 264 |
| Output voltage | 26.5 |
| Output current | 0.16 A |
| Output power | 55 W |

### Certificates

| Feature | Value |
|---|---|
| Compliance certificates | RoHS |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.5083 kg |
| Height | 38 mm |
| Width | 97 mm |
| Depth | 159 mm |

### Logistics data

| Feature | Value |
|---|---|
| Quantity per pack | 24 pc(s) |

## FAQ

### How much does the Power Adapter MEAN WELL AD-55B cost, and is it available for purchase?

The price is 48.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 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 07.07.2026 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: weight, 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 Adapter MEAN WELL AD-55B?

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/1621689/64167489_large.webp