MEAN WELL LRS-75-12 Medium Power Switching Power Supply 72W 12V 6A

The MEAN WELL LRS-75-12 is a robust 72W medium power switching power supply delivering a stable 12V at 6A. This unit excels with its high reliability, compact design, and adherence to stringent safety certifications, making it an ideal choice for a wide array of industrial applications requiring consistent and efficient power conversion. Key technical parameters include a wide AC input range of 85-264VAC, an efficiency of up to 87%, and a low no-load power consumption. Designed for demanding environments, it features built-in protections against overvoltage, overload, and short circuits, ensuring operational safety and longevity.

Product Specifications

| Parameter           | Value                 |

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

| Output Voltage      | 12V DC                |

| Rated Current       | 6A                    |

| Rated Power         | 72W                   |

| Input Voltage Range | 85-264VAC, 47-63Hz    |

| Efficiency          | 87% (typical)         |

| Operating Temp.     | -25°C to +70°C        |

| Dimensions (LxWxH)| 99x82x32 mm           |

| Protections         | OVP, OLP, SCP         |

| Certifications      | UL, TUV, CB, CE       |

Core Features & Market Positioning

The MEAN WELL LRS-75-12 distinguishes itself through its exceptional power density and cost-effectiveness, positioning it as a leading solution in the mid-range industrial power supply market. Its design prioritizes thermal performance, allowing for operation at higher ambient temperatures compared to many competitors, a critical advantage in enclosed industrial equipment. The unit's high efficiency rating (up to 87%) translates directly into reduced energy consumption and heat generation, contributing to a lower total cost of ownership and enhanced system reliability. Furthermore, MEAN WELL's reputation for robust product design and consistent quality provides end-users with confidence in long-term operational stability and reduced maintenance requirements. This commitment to quality is underscored by its comprehensive suite of safety certifications, including UL, TUV, CB, and CE, facilitating global market access and ensuring compliance with international standards.

Key Application Scenarios

This versatile power supply is engineered for a broad spectrum of industrial automation and control systems. It is frequently deployed in LED lighting systems requiring a stable 12V DC output, such as architectural illumination and signage. Its robust design also makes it suitable for powering small to medium-sized motors, industrial automation equipment, robotic systems, and various types of monitoring and control devices. Furthermore, the LRS-75-12 finds application in telecommunications infrastructure, point-of-sale (POS) systems, and digital signage where consistent and reliable power is paramount. The wide input voltage range ensures seamless operation across different global power grids, enhancing its applicability in international projects and diverse operational environments.

Practical System Integration Guidance

Integrating the MEAN WELL LRS-75-12 into existing systems is straightforward due to its standard footprint and screw terminal connections. For installation, ensure adequate ventilation; the unit is designed for free air cooling, but mounting it in an enclosure should allow for sufficient airflow to prevent overheating, especially at higher loads or ambient temperatures. Wiring the AC input should adhere to local electrical codes, using appropriate gauge wire for the 6A current draw. The DC output terminals are clearly marked for polarity; incorrect connection can damage connected equipment. For systems requiring higher current, multiple LRS-75-12 units can be paralleled, ensuring they have identical voltage settings and are appropriately fused. Always verify the voltage and current requirements of the connected load before powering up the supply.

Operation and Risk Mitigation

Safe operation of the LRS-75-12 is facilitated by its inherent protection features. The Overvoltage Protection (OVP) prevents damage from voltage spikes, while Overload Protection (OLP) safeguards against excessive current draw. A Short Circuit Protection (SCP) feature ensures that the power supply will shut down safely if a short circuit occurs on the output, preventing damage to the supply itself and connected loads. It is crucial to operate the unit within its specified input voltage range (85-264VAC) and ensure the total load does not exceed the rated 72W (12V x 6A). Operating beyond these limits can lead to premature failure or trigger protective shutdown. Regular visual inspection for dust accumulation or physical damage is recommended, and cleaning should be performed with the unit de-energized and unplugged.

Scalability & Long-Term Value

The LRS-75-12 offers excellent long-term value through its reliability and the manufacturer's commitment to product longevity. While this specific model provides 72W, MEAN WELL offers a comprehensive range of power supplies with similar form factors and voltage outputs, allowing for straightforward scalability to higher power requirements by selecting a different model from the LRS family or other MEAN WELL series. Its compatibility with standard industrial control protocols and the availability of various output voltage options within MEAN WELL's portfolio support future system expansions and upgrades. Integration with IIoT (Industrial Internet of Things) platforms is typically achieved through the connected control systems or devices powered by the LRS-75-12, rather than direct communication from the power supply itself, providing a stable foundation for smart manufacturing initiatives.

Frequently Asked Questions

What is the maximum ambient temperature for the MEAN WELL LRS-75-12?

The LRS-75-12 can operate safely in ambient temperatures ranging from -25°C to +70°C. This wide range is crucial for industrial settings that may experience significant temperature fluctuations. Ensure that proper ventilation is maintained, especially when operating near the upper limit, to prevent thermal shutdown.

Can I connect multiple LRS-75-12 power supplies in parallel to increase the current output?

Yes, you can connect multiple LRS-75-12 units in parallel to achieve a higher total current. It is essential that all units share the same output voltage setting and are properly fused to prevent damage. Ensure the load is distributed evenly among the parallel units.

Does the MEAN WELL LRS-75-12 have active PFC?

The LRS-75-12 series incorporates active Power Factor Correction (PFC). This feature helps to improve the power factor of the input current, reducing harmonic distortion and ensuring compliance with international power quality standards. It also contributes to higher overall efficiency.

What are the dimensions of the LRS-75-12 power supply?

The MEAN WELL LRS-75-12 has a compact form factor measuring 99mm in length, 82mm in width, and 32mm in height. These dimensions make it suitable for integration into space-constrained industrial enclosures and control panels.

How do I wire the AC input for the LRS-75-12?

Wire the AC input using appropriate gauge wires according to local electrical codes for a 6A current draw. Connect the Line (L), Neutral (N), and Ground (FG) terminals to your AC power source. Always ensure the ground connection is properly made for safety.

What does OVP, OLP, and SCP mean on the LRS-75-12?

OVP stands for Overvoltage Protection, OLP for Overload Protection, and SCP for Short Circuit Protection. These are built-in safety features that protect the power supply and connected equipment from electrical faults.

Is the LRS-75-12 suitable for outdoor use?

While the LRS-75-12 is designed for industrial environments, it is not inherently weatherproof. It should be installed in a suitable enclosure to protect it from moisture, dust, and direct environmental exposure.

What is the efficiency of the LRS-75-12 power supply?

The MEAN WELL LRS-75-12 boasts a high efficiency of up to 87%. This means more of the input power is converted into usable DC output, resulting in less wasted energy as heat and lower operating costs.

Can this power supply be used for LED lighting applications?

Absolutely. The stable 12V DC output and high reliability of the LRS-75-12 make it an excellent choice for powering various LED lighting systems, including strips, modules, and arrays.

Where can I find the full datasheet for the LRS-75-12?

You can typically find the complete datasheet, including detailed specifications, dimensions, and application notes, on the official MEAN WELL website or through authorized MEAN WELL distributors.