Fanless power supply

Fanless power supplies are electrical power conversion units designed to operate without active cooling fans. These products typically use passive heatsinks, thermal conduction and efficient circuit design to dissipate heat, making them suitable for noise-sensitive and dust-prone environments. Fanless models are available for both DC and AC outputs and vary in power ratings, mounting styles and environmental protection. They are chosen where long-term reliability, low maintenance and silent operation are priorities, for example in control cabinets, medical instruments, telecom racks and embedded systems.

Use cases of fanless power supply

Common applications include:

• Industrial automation: powering PLCs, sensors and motor controllers in dusty or vibration-prone plants.
• Embedded systems: reliable supply for single-board computers and IoT gateways in confined enclosures.
• Medical and laboratory equipment: noise-sensitive devices where airflow could carry contaminants.
• Telecommunications and networking: powering switches and routers in sealed cabinets.
• Outdoor and transportation: units with extended temperature ranges for vehicles or outdoor cabinets.

Types of fanless power supply

Fanless power supplies are available in several form factors and configurations:

• PCB-mounted modules: compact converters soldered or mounted directly on circuit boards for embedded designs.
• Enclosed desktop or DIN-rail units: protected housings for industrial and control-cabinet installation.
• Open-frame adapters: low-profile units for equipment with their own enclosure and custom cooling paths.
• Ruggedized and conformal-coated versions: designed for harsh environments with vibration and humidity resistance.

Key features to consider

When selecting a fanless power supply, check the following technical and practical aspects:

• Power rating and output voltage(s): ensure adequate wattage and correct DC/AC outputs for your load.
• Efficiency and thermal design: higher efficiency reduces heat; review ambient temperature and derating curves.
• Form factor and mounting: PCB, DIN-rail, chassis or open-frame depending on installation.
• Protection and certifications: overcurrent, overvoltage, short-circuit protection and relevant safety approvals (CE, UL, etc.).
• Operating temperature and IP rating: required thermal range and ingress protection for dusty or outdoor locations.
• Ripple, noise and regulation: important for sensitive electronics and communication equipment.

How to choose fanless power supply

Selecting the right fanless power supply involves matching load requirements and environmental constraints. Start by calculating continuous and peak power needs, then choose a model with margin for reliability and future expansion. Confirm compatibility with input mains (AC voltage range) and required output rails or connectors. Consider the installation space and cooling path—ensure the chosen unit has adequate heatsinking and ambient derating for enclosure mounting. Verify protective features and factory certifications relevant to your industry. Finally, compare manufacturer datasheets for efficiency, MTBF (mean time between failures) and warranty to balance cost and long-term reliability.

Which power supplies (psu) are the most popular and affordable in 2026?

The full list of popular models at affordable prices is available on this page. In 2026, the following models show high demand and an excellent price-to-quality ratio:

• Spectrum SYSTEM SHIFT 48V Power Supply WLD+40018 for 5.99€
• HiSmart DR-150-24 DIN Rail Power Supply 24V 6.25A 150W for 23.99€
• Power Supply CHIEFTEC APB-500B8-BK ATX 500W with Active PFC and multi-protection for 31.49€
• Power Supply Unit Chieftec Smart GPS-400A8 400 W for 32.99€
• Power Supply Unit Chieftec GPB-500S 500W for 34.99€

Why is it worth buying power supplies (psu) at AiO.lv?

At the AiO.lv online store, you can place an order at a great price with delivery across Latvia — to Riga, Daugavpils, Liepaja, Jurmala, Ventspils, and other cities, as well as throughout Europe. We offer products from leading manufacturers: ANTEC, ASROCK, ADATA, CHIEFTEC, Cisco, CORSAIR, Dell, EUROCASE, HP, Lenovo, PLANET, Siemens, SYNOLOGY, ZALMAN, Asus, Cooler Master, fsp/fortron, GIGABYTE, MSI, OEM. When you shop with us, you get:

• official warranty and guaranteed quality;
• convenient payment options (including installment and credit);
• fast and reliable delivery across Latvia and to any EU country.

FAQ

Where can you find a power supplies (psu) with cheap prices?

You can buy cheaper at the AiO.lv online store. We offer competitive prices and regular discounts, so you always have the chance to find a great deal.

What is the delivery time for power supplies (psu)?

If you place your order today, delivery will take between 1 and 5 business days depending on the chosen method.

How long is the warranty period for power supplies (psu)?

Our store provides an official manufacturer’s warranty ranging from 12 to 36 months, depending on the model and brand. If needed, you can always contact our customer service department or the manufacturer’s authorized service center for support.

Are power supplies (psu) purchasable with leasing?

Yes, if the selected product costs more than €50. You can learn more about installment purchase options and the terms of application on the Payment page.

Can power supplies (psu) be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and throughout Europe. All product prices are shown with VAT included. In certain cases, a 0% VAT rate may apply — for example, when purchasing from other EU countries with a valid VAT number. We issue an invoice immediately after the order is placed, support BIS electronic invoices, and automatically generate all required accounting documents. To complete a purchase for a company, simply select the company profile during checkout.