Capacitor buffered Power Supply

AC-C-TEC 1203-1

Short description

The buffered DC power supply of the AC C-TEC series includes ultra-capacitors as energy storage inside the housing. During normal operation this capacitor is charged from AC-mains. The connected DC consumers are supplied as well from AC mains. In case of an interruption of the AC supply, the energy of the ultra-capacitor is realesed regulated. With a dc/dc converter the load is supplied from the capacitor until it is discharged. The backup time depends on the state of charge of the capacitor and the discharge current.


The power supply hast he following characteristics:

  • Maintenance-free  because of long-life ultra-capacitors
  • Mikrocontroller based charging and discharging of the ultra-capacitors
  • Control of operation and status of charge with potential-free contacts and LED
  • Capacity extension possible with external capacitor extension modules

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Technical Data

Nominal input voltage

115 ... 230 V AC  ±15%

Min. nominal Input voltage for charging operation

97,8 V ... 264,5 V AC

Nominal frequency

47 ... 63 Hz 

Max. nominal input current

0,84 A ... 115 V AC
0,42 A ... 230 V AC

Max. inrush current

30 A / 2 ms

nominal Output current max.

3 A DC (at 0,94 kJ)

nominal Output current at max. energy

2 A DC (at 1 kJ)

Current limitation

1,05 ... 1,5 x INenn

Nominal Output voltage (in mains operation)

12,3 V DC ± 2 %

Output voltage range (in back-up operation)

11,5 V DC ± 2 %


88 % @ (Ue=230 V AC; Ua=24,3 V DC; Ia=INenn)


1 kJ

Protective system

IP20 a. EN 60529

operational temperature

-40 ... 60 °C

storage temperature

-40 ... 60 °C

Relative humidity

95 % condensation not permissible

Max. mounting height without load reduction

2000 m above sea level

Dimensions (H x W x D)

152,5 mm x 72 mm x 130mm  


0,85 kg

Norms and regulations

EN 50178

EN 60950


UL 508


 For more details see datasheet.


File Format
Datasheet AC C-TEC 1203-1180202PDF

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