# Power supply unit MEAN WELL RSP-320-27 321.3 W 1U metallic, AC 88–264 V, 47–63 Hz, active cooling

**URL:** https://aio.lv/en/product--mean-well-rsp-320-27--1621343
**Data updated:** 2025-12-29 07:43 (EET)
**Category:** Other goods
**Manufacturer:** mean well
**Manufacturer code:** RSP-320-27
**EAN:** 4021087013826
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 64.58 €
**Prices and availability valid until:** 2026-08-22 23:59
**Price without VAT (21%):** 53.37 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mean-well-rsp-320-27--1621343

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Tuesday | free |
| Pickup points | 31.07.2026 | 1.79 EUR |
| Courier delivery to door | 31.07.2026 | 4.99 EUR |

## Summary description

MEAN WELL RSP-320-27 is a 1U form factor power supply unit delivering 321.3 W total power. It accepts AC input 88–264 V at 47–63 Hz and features active cooling with one fan. Dimensions are 115 × 215 × 30 mm. MTBF is 206,500 h and safety approvals include UL60950-1, TUV EN60950-1 and CCC GB4943. Suitable for rack or industrial applications requiring compact, certified PSU.

## Long description

MEAN WELL RSP-320-27 is a compact 1U power supply unit that provides 321.3 W of total output in a low-profile 30 mm metal housing. It accepts a universal AC input of 88–264 V at 47–63 Hz, includes built-in active PFC with power factor \>0.95 and active cooling via an internal fan. The unit offers high efficiency (up to 90%), optional conformal coating and an LED power-on indicator, and carries safety approvals including UL60950-1, TUV EN60950-1 and CCC GB4943.
Advantages
The RSP-320-27 combines high efficiency up to 90% and an integrated active PFC to reduce input current harmonics and improve power quality. Its 1U, 30 mm low-profile metal chassis is suitable for space-constrained rack or industrial installations. Active cooling with a fan maintains temperature under load, while optional conformal coating enhances resistance to moisture and dust. An LED indicator provides a clear visual status of power-on.
Suitable for
 Rack-mounted systems with 1U height constraints
 Industrial equipment and control cabinets
 Network devices and communication systems
 Embedded and OEM applications requiring certified PSUs
Key specifications
 Model: MEAN WELL RSP-320-27 (MPN: RSP-320-27)
 Total output power: 321.3 W
 AC input: 88–264 V, 47–63 Hz
 Form factor: 1U, dimensions 115 × 215 × 30 mm
 Cooling: active (internal fan)
 Efficiency: up to 90%
 Power factor: active PFC, PF \> 0.95
 MTBF: 206,500 hours
 Safety approvals: UL60950-1, TUV EN60950-1, CCC GB4943
 Indicator: LED for power on
How to use
Install the RSP-320-27 into a compatible 1U rack space or mounting location with appropriate ventilation. Connect the AC input within the rated range (88–264 V, 47–63 Hz) to the designated input terminals, observe correct wiring and grounding practices, and connect the DC output to the load following the polarity markings. Allow clearance for airflow around the fan; verify the LED indicator to confirm power-on and monitor for normal operation.
Usage recommendations
For reliable long-term operation, use the unit within specified ambient temperature and load ratings, ensure adequate ventilation and periodic dust removal around the fan, and consider the optional conformal coating if the environment has high humidity or particulate contamination. Follow applicable safety standards and the manufacturer's installation guidelines.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.9 kg |
| Mean time between failures (MTBF) | 206500 h |
| Safety | UL60950-1, TUV EN60950-1 , CCC GB4943 approved |
| Operating relative humidity (H-H) | 20 - 90 |
| Storage temperature (T-T) | -40 - 85 |
| Operating temperature (T-T) | -30 - 70 |
| Storage relative humidity (H-H) | 10 - 95 |
| Height | 30 mm |
| LED indicators | Y |
| Width | 115 mm |
| Depth | 215 mm |
| Product colour | Metallic |
| Number of fans | 1 fan(s) |
| Efficiency | 89 % |
| Hold time | 8 ms |
| Rise time | 50 ms |
| Cooling type | Active |
| Power protection features | Overload, Short circuit, Overheating, Over voltage |
| Fan location | Top |
| Power Factor Correction (PFC) type | Active |
| AC input frequency | 47 - 63 |
| AC input voltage | 88 - 264 |
| Total power | 321.3 W |
| Power supply unit (PSU) form factor | 1U |

## FAQ

### How much does the MEAN WELL RSP-320-27 PSU 321.3 W 1U cost, and is it available for purchase?

The price is 64.58 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 Tuesday 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

### Where can I download the instructions for MEAN WELL RSP-320-27 PSU 321.3 W 1U?

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/1621343/58025964_large.webp