MEAN WELL DCWN03B-05 electric converter

Name: MEAN WELL DCWN03B-05 electric converter DCWN03B-05
Brand: mean well
SKU: 4100851
Price: 22.99 EUR
Availability: InStock

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MEAN WELL DCWN03B-05 electric converter 3 W 18-36 V 300 mA

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Offer for legal entity, cashless payment. Why is an item available only for a legal entity?
This is due to long delivery times and limited product warranties.

Short description

The MEAN WELL DCWN03B-05 is a compact electric converter with a power output of 3 W. It operates with a DC input voltage range of 18 to 36 V and provides an output current of 300 mA. This product is designed for efficient power conversion in various applications.

Available for order: 2 pcs.

Warranty: 2 Years

SKU: 4100851

Manufacturer: mean well

Learn more

Deliver the order:

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to the Customer Service Center at Kengaraga 2b, Riga

17.07.2026 {{selectedOffer.officeDeliveryString}}

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Customer service center

2b. Kengaraga str., Riga, Latvia, LV-1063

17.07.2026 {{selectedOffer.officeDeliveryString}}

free

Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!

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From 4.99 € (Weight: 0.01 kg)

Parcel couriers

Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts nodaļa

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From 1.99 €

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Bank transfer

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Product information

Description

The MEAN WELL DCWN03B-05 electric converter 3 W 18-36 V 300 mA is a compact DC-DC converter designed for applications that require a stable low-power current source. It accepts a wide DC input voltage range from 18 V to 36 V and provides a regulated output current of 300 mA with a maximum power of 3 W, enabling it to drive LEDs, sensors, and small control electronics where controlled current is needed. Its small form factor and straightforward electrical characteristics make it suitable for integration into lighting fixtures, industrial control modules, and battery-powered systems.

Advantages

This converter offers efficient conversion within its specified input range and maintains a constant output current of 300 mA, which simplifies the design of current-driven loads. The compact size reduces space requirements in enclosures and allows for easy mounting. Built with predictable electrical behaviour, it reduces the need for additional external current-regulation circuitry and eases thermal planning for low-power applications.

Suitable for

Driving LED arrays and single high-power LEDs requiring a 300 mA constant current
Powering sensors and instrumentation that need a stable low-power source
Integration into control modules, small industrial devices, and communication equipment
Battery-powered systems where input voltages fall within 18–36 V range

Key specifications

Input voltage range: 18–36 V DC
Output mode: constant current
Output current: 300 mA
Maximum output power: 3 W
Form factor: compact DC-DC converter suitable for panel or PCB mounting

How to use

Connect the converter to a DC supply within the 18–36 V range observing correct polarity. Connect the load to the output terminals, ensuring the load is rated for a constant 300 mA current and does not exceed the 3 W power limit. Verify connections and, if possible, measure output current and voltage under no-load and nominal-load conditions to confirm proper operation. Allow for adequate ventilation or mounting on a heat-dissipating surface for continuous operation within the rated power.

Usage recommendations

For reliable performance, use wiring sized to minimize voltage drop between the supply and the converter. Avoid operating at input voltages near the lower or upper limits if the supply is unstable; provide a regulated input when possible. When driving LEDs, include appropriate connectors and fusing on the input side and ensure the LED forward voltage and combined load do not exceed the converter’s 3 W capacity.

Specifications

Weight:: 0.0125 kg
Product colour:: Black

All features

Power:: 3 W
On/off switch:: No
Output current:: 300 mA
DC input voltage:: 18 - 36
USB connectivity:: No

Operational conditions

Operating temperature (T-T):: -40 - 90

Ports & interfaces

USB 2.0 ports quantity:: 0

Other features

Type:: DC/DC

Weight & dimensions

Weight:: 0.0125 kg
Height:: 10.2 mm
Width:: 20.3 mm
Depth:: 31.8 mm

Power

Output voltage:: -5 - 5

Design

Product colour:: Black

Performance

Certification:: RoHS, EN55032, CE, EAC

Logistics data

Country of origin:: China

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Instructions

mmo_79136201_1595511799_8974_12654.pdf

Description

Instructions

mmo_79136201_1595511799_8974_12654.pdf

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Customer questions

FAQ

How much does the MEAN WELL DCWN03B-05 electric converter cost, and is it available for purchase?

The price is 22.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 17.07.2026 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. 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: 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 MEAN WELL DCWN03B-05 electric converter?

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.

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