DIN-rail power supplies for 3-phase systems
48V, 10A

  • 3AC 380-480V Wide-range Input
  • ƒAlso Specified for 2-Phase Operation
  • ƒ95.4% Full Load and Excellent Partial Load Efficiencies
  • ƒWidth only 65mm, Weight only 870g
  • ƒ50% BonusPower ® , 720W for up to 4s
  • ƒActive Power Factor Correction PFC
  • ƒActive Filtering of Input Transients
  • ƒFull Power Between -25°C and +60°C
  • ƒExtremely Low Input Inrush Current Surge
  • ƒDC-OK Relay Contact
  • ƒQuick-connect Spring-clamp Terminals

Output 48-55Vdc
Input AC 380-480V  (± 15%)
Size (WxHxD) 65 x 124 x 127mm
Weight 870g
Order information Stock Item 
Product Description
The most outstanding features of the DIMENSION Q-Series DIN-rail power supplies are the extremely high efficiencies and the compact sizes which are achieved by a synchronous rectification and other unique design details. 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 virtually no input inrush current make installation and usage simple with no jumper and switches necessary. Diagnostics are easy due to the DC-ok relay, a green DC-OK LED and the red overload LED. Unique quick-connect spring-clamp terminals allow a safe and fast installation and 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 380-480V  (± 15%)
DC-Input Voltage
EN61000-3-2(PFC-Norm) fulfilled
Harmonic Correctionactive
Power Factor0.94
Input Inrush Current Limitationactive
Peak turn on current3A/3A (J1)
External Input Fuse Recommendationmin. B-6A / C-3A
Output Data
nominal Voltage 48Vdc
Adjustment Range 48-55V
Output Current Range 10-8.7A
Output Current 8.7A at 55V
10A at 48V
Output Power 480W
Power Reserves50% BonusPower®
max. Ripple and Noise Voltage100mVpp
Size (WxHxD) 65mm x 124mm x 127mm
Weight per Piece (excluding packing) 870g
Operat. Temperature Range-25°C ... +70°C
Derating12W/° at >+60°C
Mounting Method DIN-Rail
Efficency, typ.95.4%
Power Losses, typ.23.1W
MTBF SN 29500 @ 40°C (h)690.000h
Connection methodSpring-clamp terminals
DC-OK Signalyes
J1) 3x400V, 50Hz/ 3x480Vac, 60Hz, independent of temperature
Commercial Information
Article Number QT20.481
UPC Code 875404000242
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 ZM1.WALL
Side mounting bracket ZM14.SIDE
Buffer module UF20.481
MOSFET redundancy module YR40.482