Unknown availability
Redundant module designed to enhance the reliability of power supply systems with support for 48 V input.
The ERDN20-48 module from MEAN WELL is a professional solution for creating redundant power systems in industrial applications. It supports a 2-channel input with configurable 1+1 or N+1 redundancy, significantly increasing overall system reliability. Thanks to advanced MOSFET technology, the module achieves high efficiency of up to 98% with a minimal voltage drop of only 0.2 V.
The module is designed for demanding industrial environments with an extremely wide operating temperature range of -40 to +80 °C. Its enclosed metal design ensures mechanical durability and cooling through natural convection. Integrated DC OK relay contacts enable remote power status monitoring and automatic fault indication.
Advanced redundancy functions
The module supports three operating modes: classic 1+1 redundancy with one backup power source, extended N+1 redundancy for multiple power supplies, or single-use mode to reduce MOSFET load and extend component lifespan. Automatic switching between sources occurs without power interruption.
Monitoring and diagnostics
Each input channel is equipped with an independent DC OK relay contact that indicates power status. The relay activates when the voltage is within ± 5% of the nominal level and deactivates in case of a fault or undervoltage. A green LED indicator provides visual status feedback for both channels.
High reliability
The module is designed for long-term maintenance-free operation with a mean time between failures (MTBF) of 618,150 hours according to the Telcordia SR-332 standard. Cooling by natural convection eliminates fan wear and reduces operating costs.
BASIC SPECIFICATIONS
Model: ERDN20-48
Number of input channels: 2
Nominal input voltage: 48 V (DC)
Input voltage range: 36 to 60 V (DC)
Nominal output current: 20 A (continuous)
Peak current: 30 A (max. 5 s)
Voltage drop: 0.2 V (max.)
Efficiency: 98% (typ.)
Voltage alarm: < 34.2 V or > 63 V (± 5%)
Reverse current: max. 1 mA
Reverse voltage: max. 65 V (DC)
Capacitance: 320 µF (typ.)
Operating temperature: -40 to +80 °C
Storage temperature: -40 to +85 °C
Humidity: 5 to 95% RH (non-condensing)
Cooling: natural convection
MTBF: 618,150 hours (Telcordia SR-332, 25 °C)
Certifications: UL62368-1, IEC62368-1, EAC TP TC 004
Dimensions: 99 × 82 × 36 mm
Weight: 0.206 kg
Necessary cookies enabling basic functions of this website, such as page navigation and access to secure areas of the site. The website cannot function properly without these cookies.
These cookies enable the website to remember your preferences. For example, they allow you to see the last products or pages you visited, the language you have set or the currency of the site.
Statistics cookies help us understand how you interact with the website so that we can continue to improve it. The collection of this data is anonymous.
The intention of marketing cookies is to display ads that are relevant to the individual user. They are used to track visitors across websites.
Souhlas se zasíláním uživatelských dat souvisejících s reklamou společnosti Google.
A cookie is a small piece of data that a server sends to a user's browser, which stores it. Each time you visit the same server again, this data is read by the server. They are commonly used to distinguish the user, to help the website remember preference settings, etc. Therefore, they simplify the use of websites.
Cookies are stored on the client (user) side as short text files.
Cookies themselves cannot harm your computer. Nevertheless, cookies are important for privacy protection. This is because the website visited can store any information it learns about the visitor in the cookie and can thus gradually discovers specific user's interests. However, in no case can cookies be used to identify visitors.
The information from cookies can then be used for targeted advertising, statistical evaluation of visitor behaviour, etc. However, this information can also be obtained without cookies, so this use of cookies cannot be considered particularly dangerous.
Loosely taken from Wikipedie.
They are used for the functionality of the website. These may include your website language setting, product ordering, allow you to view your last viewed products, maintain login information, etc.
This website also uses services that either make it easier for you to use the website, or provide us with anonymous statistical data. These cookies are controlled by third parties and we do not have access to read or write this data.
These are mainly systems for advertising delivery or traffic analysis.
Our partners are:
Google Analytics – for more information about this tool click here
Google – for more information about the company's rules click here
Sklik – for more information about the rules of the system click here
Facebook – for more information about the rules of the system here
You can opt out of the use of certain cookies on the above pages or at http://www.youronlinechoices.com/cz/vase-volby
Most browsers automatically accept cookies unless the browser is set otherwise. By using our website, you consent to the storage of cookies.
You can also restrict or block the use of cookies in your web browser settings.
For information on your specific browser settings, please visit:
Like all websites, we use cookies on this website. They help us to make the site work properly but also to improve our site by measuring traffic.
The law requires us to ask for your consent to do this. You can change or revoke your consent at any time on the Settings page.
