Power Supplies
for the industry

With an expertise of over 50 years, we develop and manufacture customized power conversion systems in Germany – for mobile or stationary applications – for on shore, off-shore or subsea.

Education and career

  • Electronics technicians for devices & systems

  • Master craftsmen for electrical engineering
  • We supervise bachelor’s and master’s theses for the Electrical Engineering – Automation course

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Together for success with SCHAEFER

Modular converters / battery chargers / active harmonic filters

We offer you a full range of power from 100 W to 100 kW, expandable by paralleling, in small or large quantities.

Standard & customized solutions

Engineering & Innovation since decades.


Energy storage solutions for customer plants and operators

Modular fast-charging stations for the extension of charging infrastructure

for strong grids – for weak grids – off-grid