MEAN WELL LRS-100-12 High Power Switching Power Supply 102W 12V 8.5A

The MEAN WELL LRS-100-12 is a high-performance 102W industrial switching power supply delivering a stable 12V DC output at 8.5A. This robust unit excels in demanding environments due to its 90-264VAC universal input range, high efficiency up to 88%, and compliance with global safety standards like UL62368-1 and TUV EN62368-1. Its compact size and fanless design facilitate easy integration into various systems where reliability and low acoustic noise are paramount. With built-in protection features including short circuit, overload, over voltage, and over temperature protection, the LRS-100-12 ensures operational safety and longevity for critical applications.

Product Specifications

| Parameter           | Value                                      |

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

| Output Voltage      | 12V DC                                     |

| Rated Current       | 8.5A                                       |

| Rated Power         | 102W                                       |

| Input Voltage Range | 90-264VAC, 47-63Hz                         |

| Efficiency          | 88% (typical)                              |

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

| Dimensions (LxWxH)| 129 x 97 x 30 mm                           |

| Approvals           | UL/CUL/TUV/CB/CE                           |

| Protections         | Short Circuit, Overload, Over Voltage, Temp|

Core Features & Market Positioning

The MEAN WELL LRS-100-12 distinguishes itself with exceptional reliability, a critical factor in industrial automation and control systems. Its high efficiency rating minimizes energy waste and heat generation, extending the lifespan of the power supply and connected equipment. The fanless convection cooling design is a significant advantage, eliminating a common point of failure in traditional power supplies and ensuring silent operation, which is vital for sensitive equipment or noise-restricted environments. This focus on robust design and dependable performance positions the LRS-100-12 as a preferred choice for engineers requiring a cost-effective yet high-quality power solution that minimizes downtime and maintenance.

Key Application Scenarios

This 12V, 8.5A power supply is ideally suited for a broad spectrum of industrial applications. It is frequently employed in LED lighting systems, industrial automation control panels, digital signage, and point-of-sale (POS) systems where a stable and reliable 12V DC source is essential. Its universal input voltage capability makes it versatile for global deployments, while its compact form factor simplifies integration into tight enclosures common in machine control units and robotic systems. The LRS-100-12 also finds application in security and surveillance equipment, as well as general electronic test and measurement instruments.

Practical System Integration Guidance

Integrating the MEAN WELL LRS-100-12 into existing systems is straightforward due to its standard terminal block connections for both AC input and DC output. Ensure proper grounding of the chassis to the system ground for safety and noise reduction. When wiring, use appropriate gauge conductors rated for the 8.5A continuous current draw to prevent overheating and voltage drop. Verify that the ambient temperature does not exceed the operating limits, especially when the power supply is enclosed, to maintain optimal performance and longevity. Proper ventilation, even with its fanless design, is recommended for sustained operation at higher load currents.

Operation and Risk Mitigation

Safe operation of the LRS-100-12 requires adherence to specified input voltage ranges and output load limits. Overloading the unit beyond its 102W capacity can trigger the built-in overload protection, causing the power supply to shut down temporarily until the load is reduced. Similarly, exceeding the operating temperature range may activate the over-temperature protection. Always ensure that the AC input is correctly connected and that the DC output is properly terminated to prevent short circuits. If an overload or short circuit condition persists after the unit has reset, it indicates a potential fault in the connected equipment that requires further investigation.

Scalability & Long-Term Value

The LRS-100-12 offers excellent long-term value through its inherent reliability and MEAN WELL's reputation for product durability. While this specific model is rated at 102W, MEAN WELL's extensive LRS series provides a range of power outputs and voltages, allowing for straightforward upgrades or expansion within the same product family if future system requirements demand higher power. The robust design minimizes the need for premature replacement, contributing to lower total cost of ownership. Its compatibility with standard industrial control systems and its adherence to global safety certifications also ensure continued relevance and ease of integration into evolving IIoT and smart factory infrastructures.

Frequently Asked Questions

Q1: What is the maximum ambient temperature for the LRS-100-12?

The LRS-100-12 is designed for operation across a wide temperature range. It can function reliably in ambient temperatures from -25°C up to +70°C.

This broad operating window ensures performance in diverse environmental conditions. Consider derating at higher temperatures for extended lifespan.

Exceeding this range can activate thermal protection. Ensure adequate airflow for optimal thermal management.

Q2: Can this power supply be used for LED strip lighting?

Yes, the LRS-100-12 is an excellent choice for powering 12V LED strip lighting. Its stable 12V output and 8.5A current capacity are well-suited for many LED applications.

Ensure the total wattage of your LED strips does not exceed 102W. Always connect positive to positive and negative to negative terminals.

Proper wiring and load calculation are key for consistent brightness and longevity of the LEDs.

Q3: What does the overload protection do on the LRS-100-12?

The overload protection safeguards the power supply from excessive current draw. If the load exceeds the 8.5A rating, the unit will shut down.

This feature prevents damage to the power supply and connected equipment. The unit will typically auto-recover once the overload is removed.

Verify your system's current requirements to avoid nuisance tripping. It signals a potential issue in the downstream circuitry.

Q4: Is the LRS-100-12 fanless?

Yes, the LRS-100-12 features a fanless design for cooling. It relies on convection to dissipate heat effectively.

This fanless operation eliminates noise and a common point of mechanical failure. It's ideal for quiet or sensitive environments.

Ensure sufficient free space around the unit for unimpeded airflow. This supports its passive cooling mechanism.

Q5: What AC input voltages can the LRS-100-12 accept?

The LRS-100-12 boasts a universal AC input range. It accepts voltages from 90VAC to 264VAC.

This wide input compatibility makes it suitable for global installations. It handles fluctuations common in different power grids.

The frequency range for the AC input is 47Hz to 63Hz. No manual voltage selection is required.

Q6: How do I connect the AC input and DC output for the LRS-100-12?

The unit utilizes standard terminal blocks for both AC input and DC output connections. Use appropriate connectors or wire ferrules for secure termination.

Refer to the markings on the unit for L (Line), N (Neutral), and GND (Ground) for AC input. For DC output, identify +V and -V.

Ensure all connections are tight and insulated to prevent short circuits and ensure safety.

Q7: What safety certifications does the LRS-100-12 have?

The LRS-100-12 holds numerous international safety certifications. These include UL/CUL, TUV, CB, and CE marks.

Compliance with standards like UL62368-1 and EN62368-1 ensures its suitability for a wide range of applications. These are critical for market access.

These certifications attest to the product's safety and reliability for industrial use.

Q8: What happens if the LRS-100-12 overheats?

The LRS-100-12 is equipped with over-temperature protection. If its internal temperature becomes too high, it will shut down.

This protective feature prevents permanent damage from overheating. It will typically resume operation once it cools down.

Ensure the unit is installed with adequate ventilation to prevent thermal shutdown. Avoid enclosing it in a way that traps heat.

Q9: What is the efficiency rating of the LRS-100-12?

The LRS-100-12 power supply offers high energy efficiency. Its typical efficiency rating is up to 88%.

High efficiency means less energy is wasted as heat. This leads to lower operating costs and a smaller environmental footprint.

This efficiency is achieved across a significant portion of its operating load range.

Q10: How compact is the LRS-100-12 power supply?

The LRS-100-12 is designed with a compact footprint. Its dimensions are 129mm (Length) x 97mm (Width) x 30mm (Height).

This slim profile allows for easy integration into space-constrained industrial enclosures. It maximizes usable space within control cabinets.

Its small size combined with high power density is a key design advantage.