AC-C-TEC 2420-8

Capacitor buffered Power Supply

Type       :   AC-C-TEC 2420-8
Art. No:  :   NCPA0746G01002






Short description

The DC-UPS of the AC C-TEC 2420 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

3 x 340 – 550 V AC V ± 15 %

Min. nominal input voltage for charging mode
Nominal frequency


Max. nominal input current

0,95 A – (Ue 400 V AC)

Max. charging current


Nominal output voltage (mains operation)

25 V DC ± 2 % 

Nominal output voltage (buffer operation)

23, V DC ± 2 %

Max. nominal output current

20 A DC


90 %

Parallel connection

Series connection
Energy content

8 kJ

Buffer time

Depending on load

Degree of protection


Operating temperature

-20 ... 60 °C 

Storage temperature

-20 ... 60 °C 

Relative humidity

95 % non-condensing

Max. altitude (without derating)2000 m above sealevel
Dimensions (H x W x D)

192,5 mm x 140 mm x 198 mm  


approx. 3,5 kg 

Norms and Regulations

EN 50178 

UL approvals

UL 508


For more details see datsheet.


File Format


3D Model-SAT
EPLAN Macro140703edz

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