MEAN WELL LRS-50-12 Universal Machinery Switching Power Supply 50.4W 12V 4.2A
The MEAN WELL LRS-50-12 is a robust, universal 50.4W switching power supply engineered for demanding industrial applications, delivering a stable 12V output at 4.2A. Its design prioritizes reliability, efficiency, and ease of integration, making it a preferred choice for automation, control systems, and machinery requiring consistent power. Key advantages include its wide universal AC input range, built-in short-circuit, overload, over-voltage, and over-temperature protections, and compliance with stringent international safety standards. This power supply is characterized by its compact size, low profile, and excellent performance under varied environmental conditions, ensuring operational continuity and system longevity.
Product Specifications
| Parameter | Value |
| :---------------------- | :---------------------------------------------- |
| Manufacturer | MEAN WELL |
| Series | LRS-50 |
| Model | LRS-50-12 |
| Output Voltage | 12V DC |
| Rated Output Current | 4.2A |
| Output Wattage | 50.4W |
| Input Voltage Range | 85~264VAC, 120~370VDC |
| Efficiency | 87% |
| Dimensions (L x W x H) | 100mm x 82mm x 30mm |
| Operating Temperature | -30°C to +70°C |
| Certifications | UL, TUV, CB, CE |
| Protection Features | Short Circuit, Overload, Over Voltage, Over Temp |
Core Features & Market Positioning
The MEAN WELL LRS-50-12 stands out in the industrial power supply market due to its exceptional reliability and cost-effectiveness. Its 87% efficiency rating translates to reduced energy consumption and heat generation, contributing to a longer operational lifespan and lower operating costs. The series' reputation for robust protection mechanisms, including comprehensive safeguards against electrical anomalies, positions it as a dependable solution for mission-critical applications where system downtime is unacceptable. MEAN WELL's extensive experience in power supply manufacturing underpins the LRS-50 series' market presence, offering a balance of performance and affordability that appeals to engineers and system integrators seeking proven, high-quality components.
Key Application Scenarios
The versatility of the MEAN WELL LRS-50-12 makes it suitable for a broad spectrum of industrial applications. It is commonly integrated into automated machinery, such as CNC machines and robotic systems, where a stable 12V supply is essential for controlling motors, sensors, and logic controllers. In the realm of industrial instrumentation, it reliably powers data acquisition systems, process control units, and monitoring equipment. Furthermore, its compact form factor and wide operating temperature range (-30°C to +70°C) enable its use in confined spaces and harsh environments found in manufacturing plants, material handling systems, and outdoor electrical enclosures. The universal input also facilitates deployment across different regions without requiring specific voltage-rated models.
Practical System Integration Guidance
Integrating the LRS-50-12 into an industrial system is straightforward due to its standard pinouts and form factor. For wiring, connect the AC input terminals (L and N) to the mains power supply, observing correct polarity. The DC output terminals (+V and -V) should be connected to the load, ensuring the 4.2A current capacity is not exceeded. It is crucial to utilize appropriately sized wiring to handle the current and minimize voltage drop. For optimal heat dissipation, ensure adequate airflow around the unit; mounting it with sufficient clearance or utilizing a heatsink in very high ambient temperatures is recommended. The power supply's built-in protections negate the need for external fuses on the DC side, simplifying wiring and reducing component count, though an external fuse on the AC input is good practice for enhanced safety.
Operation and Risk Mitigation
Operating the MEAN WELL LRS-50-12 involves connecting it to a stable AC power source within its 85-264VAC range. The unit automatically adjusts to the input voltage. To mitigate risks, always adhere to the specified output current limit of 4.2A to prevent overload conditions. Ensure the ambient temperature remains within the -30°C to +70°C operating range; exceeding these limits can trigger the over-temperature protection or shorten the unit's lifespan. In the event of an overload or short circuit, the power supply will shut down to protect itself and the connected load. After the fault condition is rectified, the unit can typically be reset by cycling the AC power. Avoid exposing the unit to excessive moisture or corrosive environments, as these can compromise its insulation and lead to failure.
Scalability & Long-Term Value
The LRS-50-12 offers significant long-term value through its inherent reliability and compatibility with standard industrial control systems. Its robust design ensures a long operational life, reducing the frequency of replacements and associated maintenance costs. While the LRS-50-12 itself is a fixed output voltage unit, scalability within a system can be achieved by using multiple LRS-50-12 units in parallel for increased current capacity or in series for higher voltage requirements (though careful current sharing and voltage matching are essential). The power supply's adherence to global safety standards (UL, TUV, CB, CE) ensures easy integration into systems intended for international markets. Its straightforward DC output also allows seamless integration with various digital control platforms and IIoT devices that utilize standard 12V DC inputs.
Frequently Asked Questions
What is the MEAN WELL LRS-50-12 power supply used for?
This power supply is commonly used in industrial automation and control systems. It provides a stable 12V DC output for machinery and electronic equipment. Its reliability makes it ideal for applications requiring consistent power.
What are the key protection features of the LRS-50-12?
It includes protection against short circuits, overloads, and over-voltage conditions. The power supply also features over-temperature protection. These safeguards enhance system reliability and prevent damage.
Can the LRS-50-12 be used in extreme temperatures?
Yes, it operates reliably in temperatures ranging from -30°C to +70°C. This wide operating range makes it suitable for harsh industrial environments. Proper ventilation is still recommended for optimal performance.
What is the efficiency rating of the LRS-50-12?
The LRS-50-12 boasts an efficiency of 87%. This high efficiency means less energy is wasted as heat. It contributes to lower operating costs and a longer lifespan for the unit.
What is the maximum output current for the LRS-50-12?
The maximum rated output current for this power supply is 4.2 Amps. It is important not to exceed this limit to avoid overload conditions. The total wattage is 50.4 Watts.
Does the LRS-50-12 have universal voltage input?
Yes, it supports a wide universal AC input range from 85VAC to 264VAC. It also accepts DC input from 120VDC to 370VDC. This allows for global deployment without modification.
How do I wire the LRS-50-12 power supply?
Connect AC mains to the 'L' and 'N' terminals for input. Connect your load to the '+V' and '-V' terminals for the 12V DC output. Ensure proper wire gauge for the current.
What happens if the LRS-50-12 is overloaded?
If an overload condition is detected, the power supply will shut down automatically. This protects the power supply and the connected equipment. Reset by cycling the AC power after removing the fault.
What certifications does the LRS-50-12 hold?
It is certified by UL, TUV, CB, and CE. These certifications ensure compliance with international safety and performance standards. This facilitates its use in various global markets.
What are the dimensions of the MEAN WELL LRS-50-12?
The dimensions are 100mm in length, 82mm in width, and 30mm in height. Its compact size allows for easy integration into tight spaces within machinery or enclosures.
