MEAN WELL NDR-120-12 Industrial Switching Power Supply 120W 12V 10A

The MEAN WELL NDR-120-12 industrial switching power supply delivers robust and reliable power with its 120W output, 12V DC voltage, and 10A current rating, making it a prime choice for demanding industrial applications. This DIN-rail mountable unit boasts high efficiency, a compact design, and comprehensive protection features, ensuring stable operation and longevity in challenging environments. Its versatility is further enhanced by a wide operating temperature range and international safety certifications, positioning it as a dependable power solution for automation, control systems, and machinery.

Product Specifications

| Parameter              | Specification                                    |

| :--------------------- | :----------------------------------------------- |

| Output Voltage         | 12V DC                                           |

| Rated Current          | 10A                                              |

| Rated Power            | 120W                                             |

| Input Voltage Range    | 90-264VAC (47-63Hz) or 127-370VDC              |

| Efficiency             | 89%                                              |

| Operating Temperature  | -20°C to +70°C                                   |

| Dimensions (W x H x D) | 40 x 125 x 115 mm                                |

| Mounting               | DIN-rail TS-35/7.5 or 15                           |

| Protection Features    | Short circuit, Overload, Over voltage, Over temp |

| Certifications         | UL, CUL, TUV, CB, CE                           |

Core Features & Market Positioning

The MEAN WELL NDR-120-12 stands out with its exceptional power density and industrial-grade reliability. Its efficient design minimizes heat generation, crucial for enclosed control panels and extended operational periods. The unit's slim profile (40mm width) allows for significant space savings on DIN rails, a critical consideration in cabinet assembly. MEAN WELL's reputation for quality and durability, backed by rigorous testing and international certifications, firmly places the NDR-120-12 as a competitive and trusted solution against other industrial power supply manufacturers. Its inherent stability and robust build quality are key differentiators for applications requiring uninterrupted power.

Key Application Scenarios

This 120W industrial power supply is ideally suited for a broad spectrum of automation and control tasks. It excels in powering Programmable Logic Controllers (PLCs), motor drives, HMI touch panels, and sensor networks commonly found in manufacturing lines and process control systems. Its suitability extends to industrial networking equipment, LED lighting systems for factory floors, and security surveillance systems that demand consistent and reliable power delivery. The NDR-120-12's versatility makes it a go-to component for system integrators building complex industrial machinery and infrastructure.

Practical System Integration Guidance

Integrating the MEAN WELL NDR-120-12 into existing systems is straightforward due to its standard DIN-rail mounting capability. Secure the unit onto a TS-35/7.5 or TS-35/15 DIN rail by sliding the mounting clip onto the rail and pushing down until it locks. Connect the AC input terminals (L and N) to the mains supply, ensuring proper grounding via the ground terminal. The DC output terminals (+V and -V) should be connected to the load, observing correct polarity to prevent damage. For optimal performance and safety, ensure the wiring gauge is appropriate for the 10A current and that adequate ventilation is maintained around the unit, even with its high efficiency.

Operation and Risk Mitigation

Operating the NDR-120-12 within its specified input voltage range of 90-264VAC ensures optimal performance and longevity. The power supply incorporates comprehensive protection mechanisms: short circuit protection automatically resets after the fault is cleared, overload protection activates at 110-150% of rated load, and over-voltage protection triggers if the output exceeds safe limits. Over-temperature protection will shut down the unit if internal temperatures become excessive, typically due to inadequate ventilation or exceeding load capacity. Always ensure the unit is properly grounded and that the load does not continuously exceed the 10A rating to mitigate risks of failure or damage.

Scalability & Long-Term Value

The MEAN WELL NDR-120-12 offers excellent long-term value through its robust design and MEAN WELL's commitment to product availability. While not directly scalable in terms of output power from a single unit, system designers can achieve higher power by paralleling multiple NDR-120-12 units (with appropriate current sharing provisions) or by selecting higher wattage models from the NDR series. Its compatibility with standard industrial control platforms and its adherence to international safety standards ensure it integrates seamlessly into evolving IIoT and digital factory environments, providing a reliable power foundation for future upgrades and expansions.

Frequently Asked Questions

1. What is the input voltage range for the MEAN WELL NDR-120-12?

The input voltage can be AC or DC. It accepts a wide AC range from 90 to 264 volts. It also supports a DC input range from 127 to 370 volts.

This broad range ensures compatibility across global power grids. It simplifies deployment in diverse international settings.

The unit's universal input capability reduces the need for multiple power supply models. This offers cost savings and inventory management benefits.

2. How does the overload protection function on this power supply?

Overload protection engages when the output current exceeds the rated 10A. It typically trips between 110% and 150% of the nominal load.

The protection mechanism is designed to safeguard the power supply from damage. It prevents stress on internal components during transient or sustained overloads.

Once the overload condition is removed, the unit will usually recover automatically. This feature minimizes downtime and manual intervention in most cases.

3. Can I connect multiple NDR-120-12 units in parallel?

Yes, parallel operation is possible for increased current capacity. Proper current sharing circuitry must be implemented.

This configuration is ideal for systems requiring more than 10 amps. It enhances redundancy and power redundancy.

Consult the MEAN WELL application notes for detailed instructions on parallel connection. This ensures safe and efficient operation.

4. What type of DIN rail can be used for mounting the NDR-120-12?

The power supply is designed for standard DIN rails. Use either TS-35/7.5 or TS-35/15 type rails.

These are the most common industrial mounting standards worldwide. This ensures easy installation in most control cabinets.

Ensure the DIN rail is securely mounted and can support the unit's weight and vibrations. Proper rail selection is key for stability.

5. Does the NDR-120-12 have short-circuit protection?

Yes, it features robust short-circuit protection. This is a standard safety feature for industrial PSUs.

The protection circuit detects sudden drops in output voltage. It limits current flow to prevent damage to the PSU and load.

The unit typically resets automatically once the short circuit is cleared. This provides a reliable and safe operational characteristic.

6. What is the efficiency rating of the MEAN WELL NDR-120-12?

The power supply boasts a high efficiency of 89%. This means less energy is wasted as heat.

High efficiency contributes to lower operating costs. It also reduces the thermal load within enclosures.

This makes the unit suitable for energy-conscious applications. It aligns with modern industrial efficiency standards.

7. What are the main certifications for this industrial power supply?

The NDR-120-12 holds several key international certifications. These include UL, CUL, TUV, CB, and CE markings.

These certifications attest to the product's compliance with safety and performance standards. They are crucial for global market access.

End-users can be confident in the reliability and safety of the power supply for their critical applications. These marks are globally recognized.

8. How do I ensure proper ventilation for the NDR-120-12?

Maintain adequate clearance around the unit. Avoid obstructing the vents on the casing.

Ensure there is free air circulation to dissipate heat effectively. This is critical for operation within its ambient temperature range.

Even with high efficiency, some heat is generated. Proper airflow prevents overheating and ensures longevity.

9. What is the operating temperature range for this power supply?

The NDR-120-12 operates reliably from -20°C to +70°C. This is a wide range for industrial environments.

This allows for deployment in many challenging conditions. From cold storage to moderately warm factory floors.

Always consider the ambient temperature within the enclosure for precise thermal management. This ensures optimal performance.

10. What does the 120W rating signify for this power supply?

The 120W indicates the maximum continuous power output. This is the product of voltage and current (12V * 10A = 120W).

This rating is crucial for system designers. It helps in selecting the right power supply for the total load requirement.

Ensure your connected devices do not exceed this 120W limit. This prevents overloading and ensures stable operation.