Compact DIN-rail power supplies deliver high efficiency

TDK Corp. adds a new single-phase series of DIN-rail-mount power supplies to the TDK-Lambda range of products for industrial and automation applications. The cost-effective D1SE entry-range series provides an AC and DC input and is rated for continuous operation at 120 W, 240 W or 480 W with a 24-V output. These power supplies deliver an efficiency of up to 95.1%, reducing energy consumption and internal losses, which lower the internal component temperatures and improve long-term product reliability.

TDK's D1SE series of DIN-rail-mount power supplies. — (Source: TDK Corp.)

Thanks to the push-in wire terminations, the D1SE series can be quickly mounted, reducing installation time in a variety of control cabinets, machinery, and industrial production systems. In addition to a conventional 100 to 240-VAC nominal input, the D1SE is safety certified for operation from a 93 to 300-VDC supply. Designed to meet growing customer demand, the DC input addresses applications where the energy supply is coming from a common DC bus voltage or a battery.

The 120-W rated model can deliver a boost power of 156 W for 80 seconds; the 240-W rated model offers a boost of 312 W for 10 seconds; and the 480-W rated model provides a boost of 552 W for an extended 200 seconds. The 24-V output can be adjusted from 22.5 V to 29 V to allow compensation for cable drops, redundancy modules, or setting to non-standard output voltages.

All three power supplies are available with or without a DC-OK contact. For applications in challenging environments, a printed-circuit-board coating option is available, and all models feature a high-quality electrolytic capacitor which extends lifetime, according to TDK.

The DIN-rail-mount power supplies are housed in a rugged metal enclosure with a width of 38 mm for the 120-W models, 44 mm for the 240 W, and 60 mm for the 480 W. The narrow design saves space on the DIN rail for other components, the company said.

Other key specs include input-to-output isolation of 5,000 VDC, input-to-ground at 3,100 VDC, and output-to-ground at 750 VDC. The D1SE models are convection-cooled and rated for operation in the -25°C to 70°C ambient temperature range, with derating above 55°C.

Series certifications include IEC/EN/UL/CSA 61010-1, 61010-2-201, 62368-1 (Ed.3), and IS 13252-1 standards. The power supplies also are CE and UKCA marked to the Low Voltage, EMC, and RoHS Directives, and meet EN 55011-B and CISPR11-B radiated and conducted emissions.

The series also complies with EN 61000-3-2 (Class A) harmonic currents and IEC/EN 61000-6-2 immunity standards. The power supplies come with a three-year warranty.

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