TDK Lambda Americas Inc
TDK World Wide


Power Supply Product

Full Featured 120 to 480W DIN Rail Mount Power Supplies


 DRF120 Thumb 

San Diego, CA – December 2014 –

TDK Corporation announces the introduction of TDK-Lambda’s DRF120-480 series of full featured DIN rail mount power supplies.  Designed to support the growing trend for DIN power solutions in industrial, building automation and process control applications, the DRF series combines extremely compact dimensions with industry leading efficiency of up to 94%. No load power consumption is between <0.5W and <0.75W depending on the model type.

 Carrying a 5-year warranty, the TDK-Lambda 24V output DRF series is available in three power levels, 120W (5A), 240W (10A) and 480W (20A), and can deliver a peak power of 150% for 4 seconds. The overload characteristic is constant current style; ideal for driving motors and other non-linear loads.  Additional features include remote on/off, parallel capability, remote voltage adjust and a DC good relay output.

 The supplies operate from a universal input of 85~264Vac and have EN61000-3-2 compliance, enabling worldwide use; moreover, they can withstand input voltage surges of 300Vac for 5 seconds.

 Housed in a metal case, the DRF series offer a narrow design, ranging from 36.5mm to 82mm, saving vital space on the DIN rail.  The smallest model measures just 36.5mm x 123.4mm x 115mm (DRF120-24-1); all DRF models will mount on either a TS35/7.5 or TS35/15 DIN rail offering engineers a flexible option for various applications. In addition, they have been rigorously tested for shock and vibration while mounted onto the rail.

 The supplies can operate at full load over a wide temperature range of -25 to +60°C (derating linearly to 70% load at+70°C). Other features include over-current, over-voltage protection and a hold-up time of up to 20ms at full load.

 The DRF series is approved to UL508 safety standard for industrial control equipment. Further safety approvals include IEC/EN 60950-1 (2nd Ed.) and UL/CSA 60950-1. CE marked in accordance with the LV Directive, EMC Directive and RoHS Directive, the power supplies are designed to meet EN55022 and CISPR22 Class B for conducted and radiated EMI.

 More information can be obtained at the following TDK-Lambda Americas website,, or by calling 800-LAMBDA-4.  Product availability for the DRF Series can be found via the link to TDK-Lambda’s distributor network (see “Check Distributor Stock to Buy”) at


Major applications

  • Industrial, building automation and process control applications

Main features and benefits

  • Compact size utilizing less space on the DIN rail
  • High efficiency
  • Low off-load power consumption

Major specifications







Input voltage range


85 to 264Vac (300Vac 5   sec)

Output voltage



Output current





Output power





Operating temperature


-25   to +70°C. (De-rate linearly to 75% load from 60 to 70°C)



UL60950-1,   CSA22.2 60950-1, EN60950-1, UL508

Size (W x H x D)


36.5 x 123.4 x 115

49 x   123.4 x 115

82 x   123.4 x 115



Five   Years



About TDK-Corporation

TDK Corporation is a leading electronics company based in Tokyo, Japan. It was established in 1935 to commercialize ferrite, a key material in electronic and magnetic products. TDK's portfolio includes electronic components, modules and systems* which are marketed under the product brands TDK and EPCOS, power supplies, magnetic application products as well as energy devices, flash memory application devices, and others. TDK focuses on demanding markets in the areas of information and communication technology and consumer, automotive and industrial electronics. The company has a network of design and manufacturing locations and sales offices in Asia, Europe, and in North and South America. In fiscal 2014, TDK posted total sales of USD 9.6 billion and employed about 83,000 people worldwide.

* The product portfolio includes ceramic, aluminum electrolytic and film capacitors, ferrites, inductors, high-frequency components such as surface acoustic wave (SAW) filter products and modules, piezo and protection components, and sensors.

About TDK-Lambda

TDK-Lambda Corporation, a group company of TDK Corporation, is a leading global power supply company providing highly reliable power supplies for industrial equipment worldwide. TDK-Lambda Corporation meets the various needs of customers with our entire range of activities, from research and development through to manufacturing, sales, and service with bases in five key areas, covering Japan, Europe, America, China, and Asia.

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Editorial Contact:

Tom Tillman, Director of Marketing
TDK-Lambda Americas Inc.
3055 Del Sol Blvd.
San Diego, CA 92154
Ph: 619-575-2872