J. Schneider AC C-TEC 2403-1

J. Schneider AC C-TEC 2403-1, Capacitor buffered Power Supply. The buffered DC power supply of the AC CTEC 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 has the following characteristics:

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

Another Article:

J. Schneider AC C-TEC 2403-1 Technical Data

Nominal input voltage

115 V … 230 V AC (±15%)

Input voltage range for charging operation

 97,8 V … 264,5 V AC

Nominal frequency

47 Hz … 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 (bei 0,94 kJ)

Nominal output current at max. energy

2 A DC (bei 1,0 kJ)

Current limitation

1,05 … 1,5 x INenn

Nominal output voltage (in mains operation)

24,3 V DC ±2 %

Output voltage (in back-up operation)

23,5 V DC ±2 %


1 kJ

Max power loss ‚worst-case‘

12 W


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

Internal device protection

2,5 A (T), 250 V

Fuse DC-output circuit (external)

3,15 A (T)

Type of connection: input Ue

screw terminal max. 2,5 mm² 0,5-0,6 Nm

Type of connection: output Ua

screw terminal max. 2,5 mm² 0,5-0,6 Nm

Type of connection: message contact

screw terminal max. 2,5 mm² 0,5-0,6 Nm

Max. load message contact (Ue-OK[1])

30 V/ 0,5 A
potentialfree relay contact

Max. load message contact (Uc> NOTEREF _Ref402518157 \h  \* MERGEFORMAT 1 )

30 V/ 0,5 A
potentialfree relay contact

Protective system

IP20 u. EN 60529

Environmental temperature

-40 °C … 60 °C

Storage temperature

-40 °C … 60 °C

Rel. humidity

≤95% condensation not permissible

Max. mounting height (without load reduction)

2000 above sea level

Dimensions (H x W x D)

152,5 mm, 72 mm, 130 mm


0,85 Kg


Snap-on mounting for DIN top hat rail

or mounting bracket for mounting plate

UL approvals

UL 508


The message contacts are coupled with the  LED display. The illumination of a LED effects the activation of the corresponding relay.

Reference : j-schneider.de

Download : Datasheet

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