Buffer module
48V, 20A

  • Buffering with electrolytic capacitors instead
    of lead acid batteries
  • Buffering of 48V loads
  • Minimum hold-up time 0.1s at 20A, 0.2s at 10A
    and longer hold-up time at lower loads
  • Clear status indication by status LED
    and signaling terminals
  • Quick-connect spring-clamp terminals
DC OutputDC 48V
Input DC 48V  (-20%/+25%)
Size (WxHxD)64 x 124 x 102mm
Product Status Stock item 
Technical Data

Input Data
DC-Input Voltage DC 48V  (-20%/+25%)

Output Data
48Vdc (M2)

Storage elementElectrolytic Capacitors

Size (WxHxD)64mm x 124mm x 102mm
Weight per Piece (excluding packing)740g
Operat. Temperature Range-25°C ... +70°C
Mounting Method Din-Rail
MTBF SN 29500 @ 40°C (h)2.348.000h
Connection methodspring terminals
M2)Or selectable 1V (UF20.241) or 2V (UF20.481) smaller than input voltage
Commercial Information

Article NumberUF20.481
UPC Code875404000778
Country of originCZ
Product Status Stock item 
E ClassificationeClass 5.1 27040603
eClass 6.x 27040603
eClass 7.x 27040603
eClass 8.0 27049201
eClass 9.0 27049201
ETIM 4.0 EC000382
ETIM 5.0 EC000382
HS Code HS 85044082
Warranty Period (Month)36
Packaging Unit1pc
Accessories / Complementary Units

Wall / panel mount bracketZM1.WALL
Side mounting bracketZM14.SIDE
Adapter for Siemens S7-300 railSLZ12