Mean Well LRS-75-24 24V 3.2A 76.8W Switching Power Supply
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A. Product Overview
The Mean Well LRS-75-24 belongs to the LRS-75 series of single output enclosed switching power supplies. This model provides a regulated 24V DC output at up to 3.2A, giving a rated output power of 76.8W. It is designed for applications where reliable conversion from mains AC power to low voltage DC power is required.
The power supply accepts 85 to 264V AC or 120 to 373V DC input, making it suitable for use with a wide range of electrical supply systems. The 24V output can be adjusted from approximately 21.6V to 28.8V, allowing engineers to fine tune the output for specific equipment requirements.
Its compact metal enclosure measures approximately 99 x 97 x 30 mm and uses a low profile design that makes it suitable for installation inside electrical panels, automation cabinets and machinery. The unit operates using free air convection without requiring an internal cooling fan.
The LRS-75 series also incorporates short circuit, overload and over voltage protection, along with resistance to vibration up to 5G.
B. Working Principle
The Mean Well LRS-75-24 works using switch mode power supply technology.
First, the incoming AC electrical supply is filtered and converted into DC internally. The switching circuit then operates at high frequency to efficiently control the electrical energy. This energy passes through the internal transformer and regulation circuitry before being converted into a stable 24V DC output.
The feedback and control circuitry continuously monitors the output voltage and adjusts the switching operation to maintain a stable DC supply even when the connected load or input voltage changes.
In practical terms:
AC Input → Filtering and Rectification → High Frequency Switching → Voltage Transformation → Rectification and Filtering → Regulated 24V DC Output
This switching method allows the power supply to remain compact while providing efficient power conversion for industrial and electronic equipment.
C. Why Is Mean Well LRS-75-24 Used?
The LRS-75-24 is used when industrial equipment requires a dependable 24V DC power source from a standard AC mains supply.
It is commonly selected because 24V DC is widely used in industrial automation systems for powering PLCs, sensors, transmitters, relays, controllers, indicators, HMI equipment and other control devices.
Typical applications include:
- Industrial automation control panels
- PLC and HMI systems
- Temperature and process controllers
- Sensors and transmitters
- Industrial relays and control circuits
- Electrical machinery
- Electronic instruments
- Testing equipment
- Mechanical and electrical equipment
- Industrial control systems
Mean Well lists industrial automation machinery, industrial control systems, mechanical and electrical equipment and electronic instruments among the intended applications of the LRS-75 series.
D. Suitable Buyers
The Mean Well LRS-75-24 24V SMPS is suitable for:
- Industrial automation companies
- Control panel manufacturers
- Machine manufacturers
- Electrical panel builders
- System integrators
- PLC and HMI programmers
- Factory maintenance departments
- Industrial electrical contractors
- OEM equipment manufacturers
- Instrumentation companies
- Process automation companies
- Electronic equipment manufacturers
- Industrial maintenance engineers
- Electrical and automation distributors
It is particularly suitable where a compact enclosed 24V DC, approximately 75W class industrial power supply is required.
Frequently Asked Questions
What is the Mean Well LRS-75-24?
The Mean Well LRS-75-24 is an enclosed single output switching power supply designed to convert AC mains power into regulated 24V DC power for industrial and electronic applications.
What is the output of Mean Well LRS-75-24?
The LRS-75-24 provides a 24V DC rated output with a maximum current of 3.2A and rated power of 76.8W.
What is the input voltage of LRS-75-24?
The power supply supports a universal input range of approximately 85 to 264V AC and 120 to 373V DC.
Can the output voltage of LRS-75-24 be adjusted?
Yes. The 24V model provides an output voltage adjustment range of approximately 21.6V to 28.8V.
Can Mean Well LRS-75-24 be used for PLC panels?
Yes. The 24V DC output makes it suitable for many PLC panels, automation systems, industrial controllers, sensors, relays and other 24V DC control devices, provided the connected load remains within the power supply specifications.
Does LRS-75-24 require a cooling fan?
No. The LRS-75 series is designed for free air convection cooling, which means it does not require an internal cooling fan during normal installation and operation within its specified conditions.
Does Mean Well LRS-75-24 have protection features?
Yes. The LRS-75 series provides protection against short circuit, overload and over voltage conditions.
What is the operating temperature range of LRS-75-24?
The specified operating temperature range is approximately minus 30°C to 70°C, subject to the manufacturer's derating requirements.
What are the dimensions of Mean Well LRS-75-24?
The unit measures approximately 99 x 97 x 30 mm, making it suitable for compact electrical and automation panels.
Where is Mean Well LRS-75-24 commonly used?
It is commonly used in industrial automation machinery, control panels, industrial control systems, mechanical equipment, electrical equipment and electronic instruments.
Is Mean Well LRS-75-24 suitable for industrial automation?
Yes. Industrial automation machinery and industrial control systems are specifically listed among the applications for the Mean Well LRS-75 series.