A comparison of Mean Well’s NDR, WDR, TDR, and SDR series is a key analysis for automation professionals looking to select the right power supply for their specific applications. Each of these series has different features that can be critical in different environments, such as industrial systems, building automation, and space-constrained applications. So let’s take a look at what makes each power supply series stand out to help you make the best choice.
Mean Well NDR – Solid Performance for Standard Industrial Applications
The NDR series are low-profile, DIN-rail switch-mode power supplies. They are a popular choice for industrial applications where space is limited. They have a metal housing, which increases their resistance to mechanical damage, as well as appropriate energy efficiency, reaching a level of up to 90%.
Key features of the NDR series:
- Low profile - ideal for applications where available space is limited.
- Efficiency up to 90% - ensures lower energy losses.
- Operating temperature range from -20°C to +70°C - suitable for various working environments.
- Input voltage range 90-264 VAC - allows operation in a wide range of mains voltages.
Applications of the NDR series:
The NDR series will work perfectly in applications such as control systems, industrial electrical installations, as well as all types of devices operating in stable environments with moderate load. This is an economical choice, but well thought out in terms of durability for typical industrial conditions.
Mean Well WDR – High resistance to variable voltages and harsh environmental conditions
WDR series power supplies are designed for more demanding applications where the input voltage can fluctuate significantly. Thanks to a wide input voltage range (up to 480 VAC) and high resistance to interference, WDR are reliable in more difficult working environments. They also have a wide operating temperature range, making them an ideal choice for applications requiring reliability in extreme conditions.
Key features of the WDR series:
- Wide input voltage range (up to 480 VAC) – ideal for places with large voltage fluctuations.
- High interference resistance – they work effectively in environments with high exposure to electromagnetic interference.
- Operating temperature range from -30°C to +70°C – guarantees reliability in extreme conditions.
- Short circuit and overload protection – provides additional safety.
WDR series applications:
WDR is a series dedicated to advanced applications, such as control and monitoring systems in difficult conditions, electric vehicle charging stations and industrial infrastructure in places with large voltage fluctuations and harsh environmental conditions.
Mean Well TDR – High Power Density and Advanced Protection Features
The TDR series are advanced high-power power supplies designed for applications requiring high power reserves while maintaining a low design profile. Their high efficiency (up to 94%) and wide voltage range make them a popular choice for advanced automation systems where space saving and reliability are key.
Key Features of the TDR Series:
- High Energy Efficiency (up to 94%) – Minimizes energy loss under heavy loads.
- High Power Density – Ideal for space-constrained applications that require high power.
- 180-550 VAC Input Voltage Range – Added flexibility for worldwide installations.
- Integrated Overload, Overvoltage and Overheating Protection – For Maximum Operational Safety.
TDR Series Applications:
The TDR Series is ideal for advanced applications such as process automation, extensive industrial installations, as well as demanding power systems based on IT and telecommunications technology. With high power and efficiency, it is the choice for specialists who need uncompromising reliability and safety.
Mean Well SDR – High Efficiency in a Compact Design
The SDR series are compact, very efficient power supplies designed for applications that require high power while saving space. They are known for their efficiency of up to 94% and compact housing, so they can be mounted even in limited space. SDRs also offer a wide operating temperature range and overload protection, making them versatile in many industrial applications.
Key Features of the SDR Series:
- Very high efficiency (up to 94%) – minimizes energy losses under heavy loads.
- Compact design – ideal for applications where installation space is limited.
- Overload and temperature protection – increases the reliability and durability of the power supply.
- Operating temperature range from -25°C to +70°C – allows operation in a wide range of environmental conditions.
SDR Series Applications:
SDR is suitable for high power density installations, such as industrial automation systems, control systems, protection and monitoring systems, as well as HVAC applications. With its compact form factor and high efficiency, the SDR series is ideal where space saving and high power are key.
When to choose which series?
The selection of the right power supply depends on the specific requirements of the application and environmental conditions.
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NDR Series – choose for standard applications where low profile and limited budget are important. Ideal for applications with moderate load and stable operating conditions.
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WDR Series – perfect for environments with voltage fluctuations and harsh environmental conditions, such as heavy industry, charging stations or outdoor installations exposed to extreme temperatures.
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TDR Series – best for advanced systems where high power, high power density and the highest reliability are required. Ideal for process automation and IT applications.
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SDR Series - recommended for installations with high power density and limited space. It will work well in HVAC systems, monitoring and applications in the field of protection and industrial automation.
Each of these series offers unique features and technologies adapted to the specific needs of the automation industry, which allows for the optimal selection of a power supply for a variety of conditions.