# Power adapter/inverter MEAN WELL RSD-300F-12, 300 W, input 50.4–93.6 V, output 12 V, RoHS

**URL:** https://aio.lv/en/product--mean-well-rsd-300f-12--3717095
**Data updated:** 2026-03-27 13:20 (EET)
**Category:** Power Inverters
**Manufacturer:** mean well
**Manufacturer code:** RSD-300F-12
**EAN:** 4021087057684
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 208.99 €
**Prices and availability valid until:** 2026-07-25 23:59
**Price without VAT (21%):** 172.72 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mean-well-rsd-300f-12--3717095

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

MEAN WELL RSD-300F-12 is a 300 W power adapter/inverter designed for DC input 50.4–93.6 V and fixed 12 V output. It provides compact dimensions (97 × 216 × 40 mm), RoHS compliance and is suitable for industrial and commercial applications requiring stable 12 V power from higher-voltage DC sources. Pack quantity: 12 pieces.

## Long description

MEAN WELL RSD-300F-12 is a DC-DC enclosed converter delivering a stabilized 12 Vdc output from higher-voltage DC sources. Rated at 300 W, it accepts a wide input range suitable for battery and vehicle systems, industrial racks, and rail applications. The unit follows compact mechanical dimensions (97 × 216 × 40 mm) and meets RoHS requirements. Designed for installations where a dependable, fixed 12 V supply is required, this converter incorporates isolation and construction that align with demanding environments.
Advantages
The RSD-300F-12 provides a wide input voltage window to accommodate variations in DC supply and offers a high-output current capability to support 12 V loads up to its rated power. It includes reinforced isolation between input and output to enhance safety in systems with different reference potentials. Compliance with relevant industry standards for railway applications and a rugged enclosed package make it suitable for continuous operation in constrained spaces.
Suitable for
Converting higher-voltage DC bus or battery banks to stable 12 Vdc power
On-board vehicle and rail systems requiring EN50155-level performance
Industrial control cabinets and communication equipment that need a compact 12 V supply
Backup power subsystems and distributed power architectures
Key specifications
Output voltage: +12 Vdc
Output power: 300 W (up to 22.5 A at nominal output)
Input voltage range: compatible with wide DC inputs (50.4–93.6 V as typical; other sources indicate 43.2–100.8 Vdc tolerant)
Enclosed DC-DC converter design with compact dimensions: 97 × 216 × 40 mm
Isolation: high-voltage input-to-output isolation (4 000 Vdc)
Compliance: RoHS; designed for railway-standard environments (EN50155 compatible design)
How to use
Install the converter in a location that provides adequate ventilation and secure mechanical support, observing the specified mounting orientation and clearances in the product manual. Connect the DC input to a compatible higher-voltage source within the allowed range and connect the 12 V output to the load, ensuring correct polarity. Verify fuse protection and wiring gauges appropriate for the full-load current. Follow system grounding and safety practices when integrating the unit into mixed-voltage installations.
Usage recommendations
To ensure reliable operation, operate the unit within its specified input range and power rating, provide forced air cooling if installed in confined or high-temperature environments, and perform routine inspections of connections and protective devices. For rail and vehicle installations, follow applicable EN50155 installation rules and vehicle wiring standards.

## Specifications

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 1.19 kg |
| Height | 40 mm |
| Width | 97 mm |
| Depth | 216 mm |

### Packaging content

| Feature | Value |
|---|---|
| Quantity per pack | 12 pc(s) |

### Features

| Feature | Value |
|---|---|
| Input voltage | 50.4 - 93.6 |
| Output voltage | 12 |
| Output power | 300 W |

### Sustainability

| Feature | Value |
|---|---|
| Sustainability certificates | RoHS |

## FAQ

### How much does the MEAN WELL RSD-300F-12 power adapter/inverter 300 W cost, and is it available for purchase?

The price is 208.99 € (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 23.07.2026 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. 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, input voltage, output voltage, 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 RSD-300F-12 power adapter/inverter 300 W?

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/3717095/58544533_large.webp