DIN-rail power supplies for 1-phase systems
48V, 20A

  • AC 200-240V input
  • Width only 110mm, Weight only 1.8kg
  • 95.0% Full load and excellent partial load efficiencies
  • 50% BonusPower®, 1440W for up to 4s
  • 55A High peak current for 10ms for easy fuse Tripping
  • Safe HiccupPLUS overload mode
  • Active power factor correction (PFC)
  • Negligibly low input inrush current
  • Full power between -25°C and +60°C
  • Current sharing feature for parallel use
  • Internal data logging for troubleshooting included.
  • DC-OK relay contact
  • Shut-down input
DC Output48-54Vdc
Input AC 200-240V  (-15%/+10%)
Size (WxHxD)125 x 124 x 127mm
Product Status Stock item 
Technical Data

Input Data
AC-Input Voltage AC 200-240V  (-15%/+10%)
DC-Input Voltage
EN61000-3-2(PFC-Norm) fulfilled
Harmonic Correctionactive
Power Factor0.96
Input Inrush Current Limitationactive
Peak turn on current14A
External Input Fuse Recommendationmin. B-10A / C-8A

Output Data
Nominal Voltage48Vdc
Adjustment Range48-54V
Output Current Range20-17.8A
Output Current 17.8A at 54V
20A at 48V
Output Power960W
Power Reserves50% BonusPower®
max. Ripple and Noise Voltage150mVpp

Size (WxHxD)125mm x 124mm x 127mm
Weight per Piece (excluding packing)1800g
Operat. Temperature Range-25°C ... +70°C
Derating24W/°C at >+60°C
Mounting Method DIN-Rail
Efficiency, typ.95.0%
Power Losses, typ.50.5W
MTBF SN 29500 @ 40°C (h)392.000h
Connection methodScrew terminals
DC-OK Signalyes
V1)Peak current at 230Vac, independent of temperature
Commercial Information

Article NumberQS40.484
UPC Code875404001492
Country of originCZ
Product Status Stock item 
E ClassificationeClass 5.1 27049002
eClass 6.x 27049002
eClass 7.x 27049002
eClass 8.0 27049002
eClass 9.0 27040701
ETIM 4.0 EC000599
ETIM 5.0 EC002540
HS Code HS 85044082
Warranty Period (Month)36
Packaging Unit1pc
Accessories / Complementary Units

Wall / panel mount bracketZM2.WALL
MOSFET redundancy moduleYR40.482
Buffer moduleUF20.481