# Power Adapter MEAN WELL AD-155B

**URL:** https://aio.lv/en/product--mean-well-ad-155b--1621694
**Data updated:** 2025-12-29 07:43 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** mean well
**Manufacturer code:** AD-155B
**EAN:** 4021087017701
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 78.99 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 65.28 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mean-well-ad-155b--1621694

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

The MEAN WELL AD-155B is a reliable power adapter with an input voltage range of 88-264 V and an output power of 155 W. It provides a stable output voltage of 27.1 V, making it suitable for various applications. The adapter is RoHS compliant, ensuring it meets environmental standards. Its compact design (110 mm width, 199 mm depth, 50 mm height) allows for easy integration into different setups. Each pack contains 16 units, ideal for bulk needs.

## Long description

The MEAN WELL AD-155B is an enclosed AC-DC power adapter with UPS function that delivers up to 155 W of output power. It accepts a wide input voltage range (88–264 V AC) and provides stable DC outputs: 27.6 V at 5.5 A and 27.1 V at 0.5 A. The unit is RoHS compliant and its compact housing (110 mm × 199 mm × 50 mm) makes it suitable for integration in constrained installations and equipment racks.
Advantages
The AD-155B offers dual DC outputs with UPS capability for uninterrupted operation, wide input voltage compatibility for global use, and a compact, enclosed design for safer installation. RoHS compliance ensures the adapter meets common environmental and safety requirements. The combination of a higher-current main output and a secondary low-current output enables powering both primary loads and auxiliary circuits simultaneously.
Suitable for
Industrial or commercial equipment requiring a 27 V DC supply
Systems needing a primary power feed plus a standby/auxiliary output
Installations where compact enclosed adapters are preferred for safety
Bulk deployments — shipped in packs of 16 units for multiple installations
Key specifications
Manufacturer: MEAN WELL
Model (MPN): AD-155B
Input voltage: 88–264 V AC
Output 1: 27.6 V DC, 5.5 A
Output 2: 27.1 V DC, 0.5 A
Output power: 155 W (total)
Compliance: RoHS
Dimensions: 110 mm (W) × 199 mm (D) × 50 mm (H)
Pack quantity: 16 units
How to use
Mount the AD-155B in a well-ventilated area and connect the AC input to a suitable mains supply within 88–264 V. Connect the main DC output and the auxiliary DC output to their respective loads, observing polarity. Verify that the combined load does not exceed the rated 155 W and that the 5.5 A and 0.5 A outputs are not overloaded. Follow local electrical codes and MEAN WELL installation instructions for wiring and grounding.
Usage recommendations
For reliable long-term operation, keep clearance around the adapter for airflow, avoid exposure to moisture and corrosive environments, and periodically check connections for tightness. Use this adapter where its dual-output and UPS function match system power requirements; if in doubt, consult a qualified technician.

## Specifications

| Feature | Value |
|---|---|
| Input voltage | 88 - 264 |
| Output voltage | 27.1 |
| Output current | 0.5 A |
| Output power | 155 W |

### Certificates

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

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.8875 kg |
| Height | 50 mm |
| Width | 110 mm |
| Depth | 199 mm |

### Logistics data

| Feature | Value |
|---|---|
| Quantity per pack | 16 pc(s) |

## FAQ

### How much does the Power Adapter MEAN WELL AD-155B cost, and is it available for purchase?

The price is 78.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 19 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 16.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can Power Adapter MEAN WELL AD-155B be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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-155B?

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/1621694/64167492_large.webp