TDK-Lambda DRF120-480 series power supplies

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The TDK-Lambda DRF120-480 series of DIN rail-mount power supplies combines compact dimensions with an efficiency of up to 94%. No load power consumption is between 0.5 and 0.75 W depending on the model type.

The TDK-Lambda 24 V output DRF series is available in three power levels — 120 W (5 A), 240 W (10 A) and 480 W (20 A) — and can deliver a peak power of 150% for 4 s. The overload characteristic is constant current style; suitable 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 85-264 VAC, have EN61000-3-2 compliance and can withstand input voltage surges of 300 VAC for 5 s.

Housed in a metal case, the DRF series offer a narrow design, ranging from 36.5 to 82 mm, saving vital space on the DIN rail. The smallest model measures 36.5 x 123.4 x 115 mm (DRF120-24-1); all DRF models will mount on either a TS35/7.5 or TS35/15 DIN 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 overcurrent and overvoltage protection, and a hold-up time of up to 20 ms at full load.

The DRF series is approved to UL508, as well as IEC/EN 60950-1 (2nd Ed.) and UL/CSA 60950-1, among other standards.