Capacitor buffered Power Supply

AC-C-TEC 1203-1

Short description

The DC-UPS of the AC C-TEC 1203 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 (12 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 -20°C up to 60°C



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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)

parallel operation


Serial operation



1 kJ

Protective system

IP20 a. EN 60529

operational temperature

-20 ... 60 °C

storage temperature

-20 ... 60 °C

Relative humidity

95 % condensation not permissible

Max. mounting height without load reduction

1000 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 1203-1170609PDF

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