75W 24V DC LRS Industrial Switching Power Supply

The LRS-75-24 switching power supply takes 100-240VAC in and delivers a regulated 24V DC at 3.2A, rated 75W. This 75W power supply is matched to light-duty single-device jobs-one IP camera, a short run of LED strip, a door access controller, or the control circuits inside a small machine. The 129 x 97 x 30 mm case keeps this 75W power supply out of the way in 1U-height enclosures and narrow control boxes. It is part of the CHNANMA LRS series power supply family, and other output voltages can be provided upon request.

Technical Specifications

DC Output: 24V 3.2A (Adjustable via +V ADJ)

Rated Power: 75W MaxAC

Input: 100-240VAC Wide Input Range

Cooling Method: Natural convection cooling (Fan-less)

Ambient Temperature: 50°C

Dimensions: 99 × 97 × 30 mm

Materials: Pure copper transformer and copper windings

Protection: Short-circuit, Over-load, Over-voltage, Over-temperature

Heat Dissipation and Installation

This AC-DC enclosed power supply cools by natural convection -the vented metal mesh casing does the work, with no fan fitted. For a 75W power supply, that means quiet operation in offices, server-adjacent cabinets, and other noise-sensitive rooms. At 30mm tall, the unit fits inside standard 1U-height enclosures and slim control boxes. Keep the casing openings clear for airflow, and leave extra space around the unit in sealed cabinets. The unit is rated for a 50°C ambient temperature.

Material and Factory Standard

CHNANMA assembles this 24V 75W power supply around a pure copper transformer and copper windings. Every 75W 24V DC switching power supply leaves our factory after standard quality-control checks.

About the Manufacturer

CHNANMA is the brand of Jiangxi Nanma Electrical Co., Ltd., founded in 2001. Production runs at a 6,000-square-meter manufacturing base in Ruijin City, Jiangxi Province, under ISO9001:2015 quality management, ISO14001 environmental management, and ISO45001 occupational health and safety standards. Engineering staff make up about 30% of the workforce, and OEM/ODM customization is available on request. This power supply is covered by a one-year warranty for return, replacement, and repair.

FAQ

Q: Does the LRS-75-24 have a cooling fan?

A: No. It uses natural convection cooling through the vented casing. There is no fan to clean or replace.

Q: Do I need to switch the input voltage manually?

A: No. The unit accepts 100-240VAC, so it adapts to the local grid on its own.

Q: Can I adjust the output voltage?

A: Yes, within its adjustment range, using the +V ADJ trimmer on the unit. It also lets you compensate for voltage drop over longer cable runs.