AC C-TEC 2403-1-400

Capacitor buffered Power Supply

Type       :   AC-C-TEC 2403-1 (400 V)
Art.-No.  :   NCPA0724G01020



Short description

The DC-UPS of the AC C-TEC 2403 series is equipped with a integrated power supply and ultracapacitors for accumulating energy. During normal operation this capacitor is charged by an internal charger which is supplied by the internal, regulated DC power supply. If the AC 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 and power supply
  • 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 voltage

400 V ± 15 %

Min. nominal input voltage for charging mode
Nominal frequency


Max. nominal input current

0,24 A

Max. charging current


Nominal output voltage (mains operation)

24,3 V DC ± 2 %  

Nominal output voltage (buffer operation)

23,5 V DC ± 2 %

Max. nominal output current

2 A DC (with nominal capacity)

3 A DC (with reduced capacity)


88 %

Parallel connection

Series connection
Energy content1 kJ
Buffer time

Depending on load

Degree of protection


Operating temperature

-20 ... 60 °C

Storage temperature

-20 … 60 °C

Relative humidity95 % non-condensing
Max. altitude (without derating)2000 m above sealevel
Dimensions (H x W x D)

152,5 mm x 100 mm x 130 mm


1,2 kg


Snap-on mounting for DIN top hat rail

Norms and Regulations

EN 50178

EN 60950

UL approvals


For more details see datasheet.


File Format
EPLAN Macro140703edz

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