DIN-rail power supplies for 1-phase systems
24V, 20A

  • AC 100-240V wide-range input
  • Width only 82mm
  • Efficiency up to 93.9%
  • 150% (720W) peak load capability
  • Safe Hiccup PLUS overload mode
  • Easy fuse tripping due to high overload current
  • Active power factor correction (PFC)
  • Negligible low inrush current surge
  • Short-term operation down to 60Vac and up to 300Vac
  • Full power between -25°C and +60°C
  • DC-OK relay contact
  • Quick-connect spring-clamp terminals
  • Conformal coated
DC Output24-28Vdc
Input AC 100-240V  (± 15%)
DC 110V-150V  (-20%/+25%)
Size (WxHxD)82 x 124 x 127mm
Product Status Stock item 
Technical Data

Input Data
AC-Input Voltage AC 100-240V  (± 15%)
DC-Input Voltage DC 110V-150V  (-20%/+25%)
EN61000-3-2(PFC-Norm) fulfilled
Harmonic Correctionactive
Power Factor0.90
Input Inrush Current Limitationactive
Peak turn on current9A/7A (D1)
External Input Fuse Recommendationmin. B-10A / C-10A

Output Data
Nominal Voltage24Vdc
Adjustment Range24-28V
Output Current Range20-17A
Output Current 17A at 28V
20A at 24V
Output Power480W
Power Reserves50% BonusPower®
max. Ripple and Noise Voltage100mVpp

Size (WxHxD)82mm x 124mm x 127mm
Weight per Piece (excluding packing)1200g
Operat. Temperature Range-25°C ... +70°C
Derating12W/°C at >+60°C
Mounting Method DIN-Rail
Efficiency, typ.93.9%
Power Losses, typ.31.4W
MTBF SN 29500 @ 40°C (h)469.000h
Connection methodSpring-clamp terminals
DC-OK Signalyes
D1)Peak current at 120Vac/230vac, independent of temperature
Commercial Information

Article NumberQS20.241-C1
UPC Code875404001379
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

Side mounting bracketZM15.SIDE
Adapter for Siemens S7-300 railSLZ13
MOSFET redundancy moduleYR40.242
DC-UPS control unitUB20.241
DIN-rail power supplies for 1-phase systemsCP10.361
Wall / panel mount bracketZM2.WALL