DIN-rail power supplies for 3-phase systems
12V, 8A

  • 380-480V 2-Phase input
  • Efficiency up to 85,8%
  • Negligibly low input inrush current
  • Full output power between -25 and +60°C

Output 12-15Vdc
Input AC 380-480V  (-15%/+20%)
Size (WxHxD) 40 x 124 x 117mm
Weight 500g
Order information Stock Item 
Product Description
The DIMENSION C-series are cost-optimised power supplies without compromising quality, reliability and performance. The C-series is part of the DIMENSION power supply family. The most outstanding features of CT5.121 are the high efficiency, electronic inrush current limitation, active input transient filter and wide operational temperature range, the small size and other technological design concepts. The C-series includes all the essential basic functions. The CT5.121 utilizes only 2 legs of a 3 phase system which saves wiring and installation costs. Furthermore, this allows a smaller unit without compromising the size of the terminals. Due to the low power consumption, an unbalancing of the individual phases is not expected.
Technical Data
Input Data
AC-Input Voltage AC 380-480V  (-15%/+20%)
DC-Input Voltage
EN61000-3-2(PFC-Norm) fulfilled
Harmonic CorrectionPFC
Power Factor0.44
Input Inrush Current Limitationactive
Peak turn on current4A/4A (B2)
External Input Fuse Recommendationmin. B-6A / C-3A
Output Data
nominal Voltage 12Vdc
Adjustment Range 12-15V
Output Current Range 8-6.4A
Output Current 6.4A at 15V
8A at 12V
Output Power 96W
max. Ripple and Noise Voltage100mVpp
Size (WxHxD) 40mm x 124mm x 117mm
Weight per Piece (excluding packing) 500g
Operat. Temperature Range-25°C ... +70°C
Derating2.5W/° at >+60°C
Mounting Method DIN-Rail
Efficency, typ.85.4%
Power Losses, typ.16.4W
MTBF SN 29500 @ 40°C (h)983.000h
Connection methodScrew terminals
B2) Peak current at 2x400VAC / 2x480Vac, indeptendent of temperature
Commercial Information
Article Number CT5.121
UPC Code 875404001522
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 ZM11.SIDE
Adapter for Siemens S7-300 rail SLZ10