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header-product MEAN WELL DCWN03B-05 electric converter 3 W 18-36 V 300 mA
23.49 €

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

MEAN WELL DCWN03B-05 electric converter Photo 1
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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
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.79 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
26.08.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
31.08.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.01 kg)
Parcel couriers
Unisend LV / Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts pakomāts / DPD Paku skapis / Omniva LV / Latvijas Pasts nodaļa
31.08.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.79 €
payment
Payment Methods:
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.

All features
Power: Energy that is produced by mechanical, electrical, or other means and used to operate a device.
3 W
On/off switch: The button which is pressed to switch the device on or off.
No
Output current:
300 mA
DC input voltage:
18 - 36
USB connectivity: The product has USB connector.
No

Weight & dimensions

Weight: Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.
0.0125 kg
Height: The measurement of the product from head to foot or from base to top.
10.2 mm
Depth: The distance from the front to the back of something.
31.8 mm
Width: The measurement or extent of something from side to side.
20.3 mm

Operational conditions

Operating temperature (T-T): The minimum and maximum temperatures at which the product can be safely operated.
-40 - 90

Other features

Type: Characteristics of the device.
DC/DC

Logistics data

Country of origin: Country where the device is made. Aka Country of manufacture (COM).
China

Power

Output voltage:
-5 - 5

Design

Product colour: The colour e.g. red, blue, green, black, white.
Black

Ports & interfaces

USB 2.0 ports quantity: Number of USB 2.0 ports (connecting interfaces) in the device. USB 2.0 was released in April 2000 (now called "Hi-Speed"), adding higher maximum signaling rate of 480 Mbit/s (effective throughput up to 35 MB/s or 280 Mbit/s), USB 2.0 ports are usually black.
0

Performance

Certification:
RoHS, EN55032, CE, EAC

Description

Machine translation. Load original

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Customer reviews

Customer questions

FAQ

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

The price is 23.49 € (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 26.08.2026 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

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.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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Secure Payment Pay the way you prefer: cash, VISA, MasterCard, Apple Pay, Google Pay, bank transfer, or 0% installment plan.
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Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.