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480W DIN rail power supply boosts power density

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By Nick Flaherty

The 84mm wide DRB480 is aimed at enclosures and cabinets where space is at a premium and wiith an average efficiency of greater than 87%, the DRB480 meets ErP standards.

Housed in a robust metal enclosure, the DRB480 has a depth of 124mm, a height of 125mm and a width of 84mm.  The power supply can operate from a wide range 90 – 264Vac input for global use, delivering a 24V 20A output and features a DC OK signal in addition to an LED indicator.  The output can be adjusted from 24 – 26.4V to compensate for series blocking diodes or FETs in redundant configurations.

The input to output isolation is 3,000Vac, input to ground 1500Vac and the output to ground is 500Vac.  The DRB is convection cooled and is rated for operation in -20 to +70oC ambient temperatures (cold start at -30 oC), with linear derating above 50 oC to 62.5% load at 70 oC. Electrolytic capacitor temperatures have been carefully considered to ensure their life is greater than 7 years in a 40°C ambient at 230Vac input, with 75% load, operating 24 hours a day.

The unit is certified to IEC/EN/UL/CSA 60950-1, UL 508, and is CE marked for the Low Voltage, EMC and RoHS2 Directives.  It meets EN55011-B, EN55022-B, CISPR11-B, CISPR22-B, EN61204-3 Class A radiated and conducted emissions, and complies with both EN 61000-3-2 Class A harmonic currents and EN61000-4 immunity standards.

www.tdk-lambda.com/


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