The LRS series power supply family from CHNANMA covers 35W to 450W in slim enclosures. Output voltages include 12V, 24V, 36V, and 48V DC, with other voltages available on request; every LRS switching power supply carries a +V ADJ trimmer for minor output adjustment. All models stand only 30mm tall, fitting inside standard 1U-height racks and narrow control cabinets.
Key Specifications:
- Power: 35W to 400W standard, with custom ratings up to 450W available on request. Popular 24V models include 75W, 100W, 150W, and 200W.
- Output: 12V / 24V / 36V / 48V DC, adjustable via +V ADJ.
- Input: 35W to 100W models accept wide-range 100-240VAC input without a switch; units rated 150W and above carry a built-in selector switch for 100-120VAC / 200-240VAC.
- Cooling: fan-less natural convection from 35W to 350W keeps operation quiet; the 400W model is fitted with a built-in cooling fan.
- Protection: short-circuit, overload, over-voltage, and over-temperature.
- Build: pure copper transformers and copper windings in every LRS switching power supply.
As an AC-DC enclosed power supply range, the LRS family is a practical fit for automation panels, LED signage and lighting, security CCTV, 3D printers, and telecom cabinets. For projects from 35W to 350W, this fan-less industrial switching power supply series runs quietly in offices, server-adjacent cabinets, and other noise-sensitive rooms. Each enclosed AC-DC switching power supply is designed for continuous duty in ventilated enclosures; keep the mesh casing clear of obstructions so air can move through.
Factory background CHNANMA is the brand of Jiangxi Nanma Electrical Co., Ltd., founded in 2001. The company manufactures industrial electrical components including switching power supplies and automation control components for customers worldwide. Production runs at a 6,000-square-meter facility 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. As the direct manufacturer, we ship this LRS series industrial power supply line straight from the factory, with quality-control procedures running through the production cycle. The LRS series carries a one-year warranty for return, replacement, and repair.
Selection tips
When selecting an LRS series power supply for your project, follow these steps:
Match the output voltage to your load first - 12V, 24V, 36V, or 48V.
Pick a wattage above your total load so the unit works within its rated range.
Check the input arrangement on the label: 35W to 100W models need no switch, while 150W+ models must be set to match local mains before power-on.
If you need a voltage or power step outside the standard catalog, the LRS series power supply supports custom builds through OEM/ODM - tell us the load and site conditions, and we will suggest a suitable unit for the job.
FAQ
Q: Are all LRS models fan-less?
A: No. Models from 35W to 350W run fan-less with natural convection cooling; the 400W model uses a built-in cooling fan.
Q: Does every model need manual input voltage selection?
A: No. 35W to 100W models accept wide-range 100-240VAC input. Units rated 150W and above have a selector switch - check it before power-on.
Q: Are other voltages and power ratings available?
A: Yes. The standard range covers 12V, 24V, 36V, and 48V from 35W to 400W; custom ratings up to 450W and other specifications are available on request.
