DC power supply / fanless / railway approval

DC converters

Primary clocked DC converter modules are used, among other things, to generate different (consumer) voltage levels from central DC voltages, also battery-supported.

Scope of application

Primary clocked DC converter modules are used, among other things, to generate different (consumer) voltage levels from central DC voltages, also battery-supported.
Our clocked DC converter modules for use in the low-voltage range can be connected in parallel in any quantity to increase power and redundancy.
The units are designed as plug-in modules for cabinet installation and offer galvanic isolation between input and output.

The connections on the front allow easy exchange of the modules.
As a special form, we offer DC converters without galvanic isolation on request for adapting e.g. specific battery voltage ranges to specified consumer voltages (function: e.g. “step-up converter”).

Due to their design, our modules are ideally suited for a wide range of industrial applications.

Essential features

  • Galvanic isolation between input and output
  • High efficiencies
  • Parallel switchable without additional control unit
  • Compact design with easily accessible connections on the front side
  • Fanless design (low noise, no fan replacement necessary)
  • High test voltages acc. EN 50124-1 from the railway sector
    • Integrated decoupling diode
    • 2 x IN Short-circuit current, limited to 1.2 to 1.5 s
    • Relay interface with potential-free changeover contact (operation / fault)
    • Signalling by means of LEDs, partly digital voltmeter

Technical data


Nominal data

DC input voltage tolerance

-15 % to +20
-15 % to +20

Input and output voltage


Voltage tolerance

± 1 %

Output ripple

Module-specific, < 0,5 … 1 % eff.

Safety, environmental conditions, execution

Protection class according to EN 61140


Protection class according to EN 60529

IP 20

Permissible environmental conditions:

Storage according to EN 60721-3-1

1K21 / 1M11 +5 to +40 °C

Transport according to EN 60721-3-2

2K12 / 2M4 -45 to +70 °C

Operation according to EN 60721-3-3

3K22 / 3M11 +5 to +40 °C

  • 5-85 % rel. Humidity, no condensation
  • Pollution degree 2

Permissible installation height at nominal load

1,000 m above sea level
Minimum air pressure 870 hPa

Installation site

Cabinet installation




Installation housing sheet steel / anodised front panel

Cooling type

"AN" natural cooling (fanless)

High-voltage test

Test voltages

  • primary / secondary, signals: 5.3 kVDC
  • Signals / secondary: 5.3 kVDC
  • primary / body: 2.8 kVDC
  • secondary / body: 2.8 kVDC
  • Signals / body: 2.8 kVDC

General data

Current limitation

at rated current

Overload/short circuit behaviour

short-circuit proof, increased current limitation

Parallel connection

without limitation of the number

Operating mode

Continuous operation

Applied guidelines and standards

Low Voltage Directive


EMC Directive


RoHS Directive


EMC standards

EN 50121-4
EN 55011
EN IEC 61000-6-2
EN IEC 61000-6-4
EN IEC 61204-3

General requirements
and safety requirements

EN 50124-1
EN 60529
EN 60721-x
EN 61140
EN IEC 61204-7
EN IEC 63000

Detailed, module-specific data on request or see product brochure.
Subject to technical changes

We will be happy to check your requirements/specification for feasibility.

Brochure as PDF

Learn more!

You want to know more about our products? We will be happy to send you more information by e-mail!