SDR-120 Series - Release Notes

The Compact, "Green," SDR-120 Series of DIN Rail Power Supplies

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The Compact SDR Series of DIN rail power supplies are industrial grade, highly reliable, efficient and save space on the rail. Since being introduced, all in the series have proven to be outstanding power supplies.

With state-of-the-art circuit design, the SDR-120 series are highly efficient (up to 91%) and can provide 120W continuously, or 180W peak power for 3 seconds, in temperatures up to 55 ºC (131 ºF). Cooling is fan-less natural (free air) convection and the units can actually operate up to +70 ºC (158 ºF) with some power derating (see data sheets for curves). With a built-in active PFC function, the SDR-120 series are self-switching with universal input (88~264VAC) and, meet the requirement of EN61000-3-2 for harmonic current.

The slim design of 40mm in width saves space on the rail. It’s 30.69% smaller in size when compared with the standard 120W DIN rail alternative; model DR-120. The SDR-120 series also are 5~9% more efficient than corresponding models of DR-120, which saves energy. The MTBF is now 289,900 hours or just over 33 years.

Standard functions include DC OK relay contact, ON panel LED indicator, and protection for short-circuit, overload (constant current limiting, shut down if over 3 seconds), over voltage, and over temperature. SDR-120 series also complies with GL and SEMI F47 requirements so are a great choice for marine and semi-conductor related use. Other certifications include UL, CUL, TUV, and CE.

SDR-120 Photo

SDR-120 12V Data Sheet (.pdf)

SDR-120 24V Data Sheet (.pdf)

SDR-120 48V Data Sheet (.pdf)


Suitable applications include industrial control system, semi-conductor fabrication equipment, factory automation, electro-mechanical applications, any marine application, and installations with a fan-less or low noise requirement.

SDR-120 Series Features at a Glance

Highly efficient ≈ 91%
UL508 (industrial control equipment approved)
180W peak power for 3 seconds
Universal AC input 88~264V
Built-in active PFC function
Fan-less design, cooling by natural (free air) convection
DC OK relay contact
Front panel DC voltage adjustment
Installed on DIN rail TS-35/7.5 or TS-35/15
Protections: Short circuit, overload (constant current limiting, shut down > 3 seconds) over voltage, over temperature
MTBF ≈ 33 Years
Certificates: UL / CUL / TUV / CE / CB / SEMI F47 / GL
LED indicator for power on
40mm slim design WxHxD: 40 x 125.2 x 113.5mm (1.57 x 4.9 x 4.46 inches)
RoHS Compliant

All Power SuppliesAll Slim DIN Rail Supplies


Purchasing agents and other quantity buyers are encouraged to request a quotation.
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