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Power supply 3-phase, 48 V dc Dimension X Series

  • Output current of 20 A
  • Up to 96% efficiency
  • Semi Regulated
  • Replaces linear transformers
  • Very high short-circuit current

Product description

Dimension X series is a series of semi-regulated power supplies. A so-called semi-controlled unit means that the output voltage is regulated within the specified input voltage range. Outside this range decreases / increases the output voltage compared to the input voltage.
The unit has a bonus effect of 25% (25 A) to cope with high starting currents, as well as a very high short-circuit current enables safe trips for eg MCB. The unit leaves up to 90 A at 100 ms. Lasts short circuit longer than 100 ms, the unit shuts off automatically. See chart below for details. Recovery occurs in the front, or by disconnecting the primary voltage.

A yellow LED indicates the status and warns of the following errors; phase failure, over-temperature and high load current.
The unit has a low weight (1.4 kg), no inrush current and active transient filter that protects the secondary side from transients on the primary side.
Typical applications include motors, solenoids or other "power hungry" loads that do not have requirements for accurate voltage regulation. X series are a great alternative to traditional transformers. With lower energy costs and easier installation, along with an attractive price concept means a low total cost.


We recommend free space of 40 mm above and 20 mm under the power supply, and 5 mm at the sides. (if neighbouring products are counted as a heat source spacing of 15 mm is recommended).



Input voltage range/regulation

Output characteristics

xt40 output 48V.


Part numbers

Parts Price Input voltage ac Input voltage ac min Input voltage ac max Power consumption at 400 V ac
400 V 360 V AC 440 V AC 1,65 A
480 V 432 V AC 528 V AC 1,4 A


PSU 3PH 400V ac I/P 48V dc 20A 960W O/P

Technical data

Input data

Input voltage ac 400 V
Input voltage ac min 360 V AC
Input voltage ac max 440 V AC
Inrush current at 400 V ac typical 4 A
Power factor at 400 V ac, full load. Typical 0,93
Number of phases 3

Output data

Output voltage 48 V DC
Output voltage min 48 V DC
Output voltage max 48 V DC
Output current 20 A
Power 960 W

Efficiency / Lifetime / MTBF

Efficiency at 400 V ac, full load, typical 96 %
Lifetime at 400 V ac, full load and +40 ° C 77000 h
MTBF (IEC 61709) 400 V ac, max loan, +40 °C 541000 h


Width 96 mm
Height 124 mm
Depth 159 mm
Weight 1,4 kg


Approvals CB, CE, CSA, EAC, UL
Hold time at 400 V ac, typical full load 3 ms
IP class IP20
Material protection Aluminium
Supply frequency 50-60 ±6 %
Ripple max 300 mV pp
Series Dimension X
Power consumption at 400 V ac 1,65 A
Power drop from +60 °C to + 70 °C 24 W/°C
Temperature min without derating -25 °C
Temperature max without derating 60 °C
Type Power Supply AC-DC
Active Transient Yes


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