# Power adapter/inverter Mean Well RSD-300D-5 — 300 W, Input 67.2–143 V, Output 5 V, RoHS

**URL:** https://aio.lv/en/product--mean-well-rsd-300d-5--3717091
**Data updated:** 2026-03-27 13:20 (EET)
**Category:** Power Inverters
**Manufacturer:** mean well
**Manufacturer code:** RSD-300D-5
**EAN:** 4021087057769
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 189.49 €
**Prices and availability valid until:** 2026-07-25 23:59
**Price without VAT (21%):** 156.60 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mean-well-rsd-300d-5--3717091

## 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-300D-5 is a compact power adapter/inverter delivering 300 W output power with a fixed 5 V output. It accepts an input voltage range of 67.2–143 V and complies with RoHS. With dimensions 97 × 216 × 40 mm, this module suits DIN-rail or industrial power applications where stable 5 V supply from wide DC input is required; packs of 12 available.

## Long description

Mean Well RSD-300D-5 is a compact DC-DC enclosed converter designed for industrial and railway power systems. The module provides a fixed 5 V output at up to 300 W total power, accepting a wide DC input range suitable for vehicle and trackside applications. It meets EN50155 railway standard requirements and includes reinforced isolation between input and output to support safe operation in demanding environments. The unit is RoHS compliant and comes in a slim housing with dimensions 97 × 216 × 40 mm, making it appropriate for DIN-rail or cabinet installation where a stable 5 V supply is needed.
Advantages
The RSD-300D-5 offers a wide input voltage window that covers common railway and industrial DC systems, enabling direct connection to battery strings or intermediate DC buses without extra converters. With an output capable of delivering up to 42 A at 5 V, it supports high-current loads while keeping heat dissipation manageable in a compact enclosure. The device features 4000 Vdc input-to-output isolation for enhanced safety and electromagnetic compatibility in mixed-signal installations. Compliance with EN50155 and RoHS ensures suitability for transportation applications and adherence to environmental restrictions.
Suitable for
Railway onboard power conversion and trackside power supplies
Industrial control cabinets and DIN-rail systems
Battery-fed DC distribution and vehicle power systems
High-current 5 V loads such as controllers, communication equipment, and I/O modules
Key specifications
Output voltage: fixed 5 V DC
Maximum output current: up to 42 A (total output power ~300 W)
Input voltage range: wide DC input suitable for 57.6–154 V DC systems
Isolation: 4000 Vdc input-to-output isolation
Standards: designed to meet EN50155 railway requirements
Protection features: built-in protection against overload and short circuit (as typical for enclosed converters)
Form factor: enclosed module with compact dimensions 97 × 216 × 40 mm
How to use
Install the RSD-300D-5 in an appropriate cabinet or onto a DIN rail according to the mechanical instructions supplied by the manufacturer, ensuring adequate airflow and clearance around the module. Connect the DC input to the appropriate voltage bus within the specified input range and observe correct polarity. Route the 5 V output to the load circuits, verifying that combined load current does not exceed the rated 42 A. Confirm earthing and grounding practices per system requirements and perform initial power-up checks while monitoring output voltage and temperature.
Usage recommendations
For reliable long-term operation, maintain ambient temperatures and ventilation within the manufacturer’s specified limits, avoid exposing the unit to excessive vibration or moisture, and use proper fusing on the input side. For railway installations, follow applicable EN50155 installation and maintenance practices and validate the unit under real operating conditions before commissioning.

## 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 | 67.2 - 143 |
| Output voltage | 5 |
| Output current | 42 A |
| Output power | 300 W |

### Sustainability

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

## FAQ

### How much does the Mean Well RSD-300D-5 power adapter/inverter 300 W cost, and is it available for purchase?

The price is 189.49 € (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 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-300D-5 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/3717091/58544529_large.webp