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

  • 200-240V Input
  • Efficiency up to 95,0%, parallel mode for load sharing
  • Negligibly low input inrush current
  • 50% Power reserves available up to 4s
  • Full output power between -25 and +60°C
  • DC-OK Contact; Shut-down Input

Output 48-54Vdc
Input AC 200-240V  (-15%/+10%)
Size (WxHxD) 125 x 124 x 127mm
Weight 1800g
Order information Stock Item 
Product Description
The most outstanding features of the DIMENSION Q-series DIN-rail power supplies are the extremely high efficienciy and the small siz, which are achieved by a synchronous rectification and other technological designs. The QS40.484 is a device for 200 240V mains voltages. Large power reserves of 150 % support the starting of heavy loads such as DC-motors or capacitive loads. In many cases this allows the use of a unit from a lower wattage class which saves space and money. High immunity to transients and power surges as well as low electromagnetic emission makes usage in nearly every environment possible. The integrated output power manager and input fuses as well as the near zero input inrush current make installation and usage simple. Diagnostics are easy due to the DC-OK relay, a green DC-OK LED and the red overload LED. A large international approval package for a variety of applications makes this unit suitable for nearly every application.
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 Voltage 48Vdc
Adjustment Range 48-54V
Output Current Range 20-17.8A
Output Current 17.8A at 54V
20A at 48V
Output Power 960W
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/° at >+60°C
Mounting Method DIN-Rail
Efficency, 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 Number QS40.484
UPC Code 875404001492
Country of origin CZ
Order information Stock Item 
E Classification eClass 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 Unit 1pc
Accessories / Complementary Units
Wall / panel mount bracket ZM2.WALL
MOSFET redundancy module YR40.482
Buffer module UF20.481