Upgraded performance and functionality for three-phase DIN-rail mount power supply series

TDK Corporation offers additional features and functionality to the TDK-Lambda DRB three-phase AC/DC DIN rail mount power supplies. The series, with output power levels from 120W to 960W, is currently offered with a nominal AC input range of 400VAC to 500VAC. The upgraded DRB series will now operate over an extended range of 380VAC to 500VAC nominal (50-60Hz), allowing the products to also be used in China, Africa, and South America.

Additionally, these DIN rail power supplies will now operate with a DC input voltage range of 450VDC to 810VDC, following successful testing to IEC EN 62477-1 for power electronic systems and equipment. This makes them suited for use in applications where the voltage source is a battery, solar panels, or any other type of rectified bus voltage.

The primary to secondary isolation barrier has been extended from 3510VAC to 6500VDC, making them compliant for use with EV charging equipment under UL 2231-2. Additionally, board-coated models are now available (suffixes -A6 and -A7) to protect applications with dust and dirt, flowing mixed gases (IEC 60068-2-60), and salt mist atmospheres (IEC 60068-2-11).

These enhancements cover all DRB three-phase models from 120W to 960W. To clearly differentiate from previous product revisions, all new products will feature an updated front label design. As of today, the company will equip its stocks with new product revisions. The transition period will be completed by December 31, 2025. Users relying on the latest features and functionalities should contact their local TDK-Lambda representative for assistance.

Typical application areas include DC factories, solar and wind energy systems, emergency power systems, EV charging equipment, railway or grid infrastructure, and telecommunications systems.