Mean Well LRS-35-24 24V 1.5A 36W Switching Power Supply

A. Product Overview

The Mean Well LRS-35-24 24V 1.5A 36W SMPS Power Supply belongs to the LRS-35 series of compact single output enclosed switching power supplies.

Key specifications include:

Output Voltage: 24V DC
Rated Current: 1.5A
Rated Power: 36W
Output Voltage Adjustment: 21.6 to 28.8V DC
Input Voltage: 85 to 264V AC
DC Input: 120 to 373V DC
Frequency Range: 47 to 63Hz
Typical Efficiency: 88 percent
Operating Temperature: Minus 30 degrees Celsius to 70 degrees Celsius
Dimensions: 99 x 82 x 30 mm
Cooling: Free air convection
Weight: Approximately 0.23 kg

The LRS-35 series uses a low profile metal mesh enclosure that helps dissipate heat and allows fanless operation under specified conditions. The series is designed for applications including industrial automation machinery, industrial control systems, mechanical and electrical equipment and electronic instruments.

B. Working Principle

The Mean Well LRS-35-24 works as an AC to DC switching power supply.

Incoming AC power first passes through an EMI filter. The signal is then rectified and filtered before entering the high frequency switching stage.

The switching section converts the electrical energy at high frequency and transfers it through an isolation transformer. On the secondary side, the voltage is rectified and filtered again to provide regulated 24V DC output.

The block diagram on page 3 of the datasheet shows the main stages as:

AC input
EMI filter
Rectifier and filter
Power switching circuit
Isolation transformer
Output rectifier and filter
Detection circuit
Control circuit
Overload protection
Overvoltage protection

The control circuit continuously monitors the output and adjusts the switching operation to maintain stable DC voltage.

C. Why Mean Well LRS-35-24 Is Used

The Mean Well LRS-35-24 is used when equipment requires a reliable 24V DC supply with current up to 1.5A.

Its compact enclosed construction makes it suitable for installation inside control panels, automation machines and electrical enclosures.

The output can be adjusted from 21.6 to 28.8V DC, providing flexibility when a slightly higher or lower 24V supply is required.

Important reasons for using the LRS-35-24 include:

Wide input voltage range: Supports 85 to 264V AC.

Compact design: Measures only 99 x 82 x 30 mm.

High efficiency: Provides approximately 88 percent typical efficiency.

Fanless cooling: Uses natural air convection.

Electrical protection: Includes short circuit, overload and overvoltage protection.

Industrial temperature range: Operates from minus 30 degrees Celsius to 70 degrees Celsius with applicable derating.

Low no load consumption: Less than 0.2W according to the datasheet.

High vibration resistance: Designed to withstand a 5G vibration test.

D. Suitable Buyers

The Mean Well LRS-35-24 is suitable for:

Industrial automation companies requiring a reliable 24V DC SMPS.

Control panel manufacturers building electrical and automation panels.

Machine manufacturers and OEMs requiring an enclosed 24V power supply.

PLC and automation system integrators powering controllers, sensors, relays and related devices.

Electrical contractors working with industrial control systems.

Electronic equipment manufacturers requiring regulated 24V DC power.

Maintenance engineers replacing existing 24V 1.5A SMPS units.

Automation distributors and resellers supplying Mean Well power supplies.

The manufacturer specifically identifies industrial automation machinery, industrial control systems, mechanical and electrical equipment, electronic instruments and household appliances as applications for the LRS-35 series.

FAQ

1. What is Mean Well LRS-35-24?

The Mean Well LRS-35-24 is an enclosed AC to DC switching power supply that provides a regulated 24V DC output for industrial and electronic applications.

2. What is the output current of LRS-35-24?

The rated output current is 1.5A, with a current range from 0 to 1.5A.

3. What is the rated power of Mean Well LRS-35-24?

The LRS-35-24 has a rated output power of 36W.

4. What is the input voltage range of LRS-35-24?

The power supply supports 85 to 264V AC input and 120 to 373V DC input.

5. Can the 24V output be adjusted?

Yes. The LRS-35-24 provides an adjustable output voltage range of approximately 21.6 to 28.8V DC.

6. What is the efficiency of Mean Well LRS-35-24?

The typical efficiency of the 24V model is approximately 88 percent.

7. Does LRS-35-24 require a cooling fan?

No. The unit uses free air convection cooling and does not require an internal fan under specified operating conditions.

8. What protections are provided?

The Mean Well LRS-35-24 includes protection against short circuit, overload and overvoltage.

9. What is the operating temperature range?

The specified working temperature range is minus 30 degrees Celsius to 70 degrees Celsius, subject to the manufacturer's derating curve.

10. What are the dimensions of LRS-35-24?

The enclosure measures approximately 99 x 82 x 30 mm.

11. Where is Mean Well LRS-35-24 commonly used?

It is commonly suitable for industrial automation, control panels, machinery, electronic instruments, electrical equipment and industrial control systems.

12. Is Mean Well LRS-35-24 suitable for control panels?

Yes. Its compact metal enclosure, 24V DC output and industrial design make it suitable for integration into automation and electrical control panels where a 24V supply up to 1.5A is required.