MEAN WELL NDR-240-24 High Performance Fanless Industrial Power Supply 240W 24V 10A
The MEAN WELL NDR-240-24 stands as a high-performance, fanless industrial power supply, delivering 240W of power at a 24V output with a robust 10A current capability. This unit is engineered for reliability and efficiency in demanding industrial environments, boasting key features such as a wide operating temperature range, excellent thermal dissipation without active cooling, and compliance with global safety and EMC standards. Essential technical parameters include an input voltage range of 90-264VAC, a built-in active PFC function for improved power factor, and high efficiency up to 93%. The NDR-240-24 is designed for applications requiring stable and continuous power, making it a cornerstone for automation, control systems, and instrumentation.
Product Specifications
| Parameter | Value |
| :-------------------- | :------------------------------------------ |
| Output Voltage | 24V DC |
| Rated Current | 10A |
| Rated Power | 240W |
| Input Voltage Range | 90-264 VAC, 127-370 VDC |
| Frequency Range | 47-63 Hz |
| Efficiency (Typical) | 93% |
| Power Factor | >0.95 (at 115VAC, 75% load) |
| Operating Temperature | -30°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | 5% to 95% RH non-condensing |
| Isolation Voltage | I/P-O/P: 3000VAC, I/P-FG: 1500VAC, O/P-FG: 500VAC |
| Vibration | 10-500Hz, 5G, 3 axes |
| Dimensions (L x W x H)| 215 x 115 x 30 mm |
| Mounting | Chassis mount |
| Protections | Overload, Over Voltage, Short Circuit |
| Certifications | UL, CUL, TUV, CB, CE |
Core Features & Market Positioning
The MEAN WELL NDR-240-24 distinguishes itself through its fanless design, a critical advantage in industrial settings where dust, debris, and noise from fans can compromise performance and longevity. This fanless architecture, coupled with excellent thermal management, ensures silent operation and high reliability even under continuous full load in challenging ambient conditions. Its robust build quality and adherence to stringent international safety and EMC certifications (UL, CUL, TUV, CB, CE) position it as a dependable choice for critical applications across various sectors. The integrated active PFC function contributes to energy efficiency and reduces harmonic distortion, aligning with modern industrial power quality requirements. This combination of silent, reliable operation, broad environmental tolerance, and compliance makes the NDR-240-24 a superior alternative to actively cooled power supplies in many scenarios.
Key Application Scenarios
This high-performance power supply is ideally suited for a wide array of industrial automation and control applications. Its robust design and 24V, 10A output make it perfect for powering automated machinery, robotic systems, and Programmable Logic Controllers (PLCs) in manufacturing environments. The fanless operation is particularly beneficial for applications in clean rooms, food processing, or anywhere noise reduction and dust ingress prevention are paramount. Furthermore, the NDR-240-24 is an excellent choice for LED signage, building automation systems, and various instrumentation and monitoring equipment where consistent, stable power is required, even when subjected to fluctuating temperatures and demanding operational cycles.
Practical System Integration Guidance
Integrating the MEAN WELL NDR-240-24 into existing systems is straightforward due to its standard chassis-mount form factor and screw terminal connections. Ensure proper ventilation by maintaining adequate clearance around the unit, especially as it relies on convection for heat dissipation. Connect the AC input lines (L, N) and the earth ground (FG) securely. For the DC output, connect the positive terminal to the load's positive input and the negative terminal to the load's negative input, observing correct polarity. It is crucial to confirm that the total load current does not exceed the 10A rating and that the total power consumption remains within the 240W limit to prevent overload conditions. Proper grounding is essential for safety and electromagnetic compatibility.
Operation and Risk Mitigation
Safe operation of the MEAN WELL NDR-240-24 relies on adhering to its specified operating conditions and protection features. The built-in protections against overload, over-voltage, and short circuits are designed to safeguard both the power supply and the connected equipment. Always ensure the unit is installed in an environment within its specified temperature range (-30°C to +70°C) and humidity limits. Avoid operating the power supply in locations exposed to corrosive or flammable materials. In the event of a fault, such as a persistent overload or short circuit, the unit will shut down to protect itself. After addressing the fault condition, the power supply may require a power cycle to resume normal operation.
Scalability & Long-Term Value
The MEAN WELL NDR-240-24 offers significant long-term value through its durable design and broad applicability. Its fanless construction minimizes maintenance requirements, reducing the total cost of ownership over the system's lifecycle. For applications requiring higher power or additional outputs, the NDR-240-24 can be paralleled with other compatible MEAN WELL power supplies, subject to proper load balancing and wiring, allowing for system expansion without requiring complete redesign. Its robust performance and compliance with international standards ensure compatibility with evolving industrial automation platforms and IIoT integration, making it a future-proof component for advanced manufacturing and smart infrastructure projects.
Frequently Asked Questions
What are the primary benefits of a fanless power supply like the NDR-240-24?
A fanless design, like that of the MEAN WELL NDR-240-24, eliminates moving parts, significantly reducing the risk of mechanical failure. This also results in silent operation, which is critical for sensitive environments like laboratories or offices. Dust and debris are less likely to accumulate and cause overheating issues, enhancing overall reliability and lifespan.
How does the NDR-240-24 handle thermal management without a fan?
The NDR-240-24 utilizes advanced thermal design principles, including a large heatsink integrated into its chassis and efficient component selection. This allows for passive convection cooling, drawing heat away from critical internal components and dissipating it into the surrounding air. This passive cooling method ensures reliable operation across its specified wide temperature range.
Can the NDR-240-24 be used in outdoor or harsh industrial environments?
Yes, the NDR-240-24 is designed for harsh industrial environments. Its wide operating temperature range from -30°C to +70°C and robust construction make it suitable for challenging conditions. However, direct exposure to extreme weather or corrosive substances should still be avoided unless additional protective measures are taken.
What types of loads are best suited for the NDR-240-24?
The NDR-240-24 is ideal for inductive loads, resistive loads, and capacitive loads common in industrial automation. This includes powering motors, control systems, sensors, actuators, and LED lighting. Its stable 24V output and 10A current make it versatile for various equipment requiring consistent DC power.
Is it possible to connect multiple NDR-240-24 units in parallel for higher current?
Yes, the NDR-240-24 can be connected in parallel to increase the available current capacity. This requires careful wiring and load balancing to ensure that each unit shares the load effectively. Consulting MEAN WELL's documentation for specific parallel connection guidelines is recommended for optimal performance and safety.
What certifications does the MEAN WELL NDR-240-24 hold?
The NDR-240-24 holds several crucial industry certifications, including UL, CUL, TUV, CB, and CE. These certifications ensure compliance with international safety and electromagnetic compatibility standards, making it suitable for global deployment in a wide range of applications and markets.
How do I protect the NDR-240-24 from electrical surges?
While the NDR-240-24 has built-in surge protection for overload and short circuits, it is advisable to use external surge protection devices, especially in areas prone to lightning strikes or significant grid fluctuations. Proper grounding is also essential for effective surge suppression and overall system safety.
What is the efficiency rating of the NDR-240-24 and why is it important?
The NDR-240-24 boasts a high efficiency of up to 93%. High efficiency means less energy is wasted as heat during the power conversion process. This translates to lower electricity bills, reduced thermal load on the power supply and surrounding equipment, and a smaller environmental footprint.
What troubleshooting steps can I take if the NDR-240-24 stops working?
If the NDR-240-24 stops working, first check for any obvious signs of damage and verify that the input voltage is within the correct range. Ensure that the total load current does not exceed the 10A limit and that there are no short circuits on the output. A power cycle after addressing any identified issues may restore operation.
Does the NDR-240-24 require any special wiring or configuration for basic operation?
For basic operation, the NDR-240-24 requires standard AC input wiring (L, N, FG) and DC output connections to the load. No complex configuration or programming is necessary for its core function. Ensure all connections are secure and correct polarity is maintained for the DC output.
