TDK Expands DRB 3-Phase DIN Rail Power Supply Capabilities

TDK Corporation announces additional features and functionality to the TDK-Lambda DRB 3-phase AC-DC DIN rail mount power supplies. The series, with output power levels from 120 to 960 W, is currently offered with a nominal AC input range of 400 to 500 VAC. The upgraded DRB series will now operate over an extended range of 380 to 500 Vac nominal (50-60 Hz), enabling the products to also be used in China, Africa and South America.

In addition, these DIN rail power supplies will now function with DC input voltage ranging from 450 to 810 Vdc, following successful testing to IEC EN 62477-1 for power electronic systems and equipment. This makes them suitable 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 3,510 Vac to 6,500 Vdc, making them compliant for use with electric vehicle charging equipment under UL 2231-2. In addition, board-coated models are now available (suffixes -A6 and -A7) to protect use in 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 3-phase models from 120 to 960 W. To clearly differentiate from previous product revisions, all new products will feature an updated front label design.

Main applications
DC factories, solar and wind energy systems, emergency power systems, electric vehicle charging equipment, railway or grid infrastructure, telecommunications systems

Main features and benefits
AC input voltage range from 380 to 500 Vac (+15 % / -10 %)
DC input voltage range from 530 to 675 Vdc (+20 % / -15 %)
Reinforced insulation between primary and secondary side up to 6.5kVdc
Models with coated PCBs for harsh environments

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