C-TEC 2408-20

Capacitor buffered Power Supply 

Type       :   C-TEC 2408-20
Art.-No.  :   NCPA0607G01001



Short description

The DC UPS of the C-TEC 2408 series is equipped with integrated ultracapacitors for accumulating energy. During normal operation this capacitor is charged by an internal charger which is supplied by an external, regulated DC power supply. If the DC supply is interrupted, energy of the ultracapacitors is released in a regulated process (24 V DC ±2%). The load is supplied by the buffermodul until the capacitors are discharged. The buffering time depends on the state of charge of the capacitor and discharging current.

The DC-UPS shows the following features:

  • Maintenance-free due to durable ultra capacitors
  • Reduces wiring time due to intergrated energy storage
  • Microcontroller based charging and discharging of the ultracapacitors
  • Input voltage-signal via potential-free contact and LED
  • Short overload possible
  • Vibration secured wiring via spring loaded plugs
  • Wide working temperature range -40°C till 60°C

Technical Data

Nominal input voltage12V / 24V DC ± 12,5 %

Min. nominal input voltage for loading operation

decoupled device

not decoupled device


system voltage ± 0,7V

system voltage ± 0,2V

Max. nominal input current8,0 A

Output voltage in buffer mode

system voltage 12V

system voltage 24V


11,7V DC ± 4%

23,5V DC ± 2%

Max. nominal output current8 A DC
Energy content20 kJ
Efficiency>90 %
Buffer timeDepending on load
Protective systemIP20
Operating temperature-40 ... 60  °C
Storage temperature-40 ... 60 °C
Relative humidity95 % no condensation
Max. altitude (without power reduction)2000 a.s. l.
Dimensions (H x W x D)163mm x 184 mm x 150mm
Weight3,4 kg

Snap-on mounting for DIN top hat rail

or mounting bracket for mounting plate

Norms and RegulationsEN 50178 / EN 60950
UL approvals

UL 508


For more details see datasheet.


File Format


EPLAN Macro140703edz

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