All DEIF products come with complimentary telephone and online support, where our technical supporters are available to answer product-related questions and help with user-level queries.

We offer engineering support and onsite services such as preventive maintenance and protection relay testing at a surcharge. 

Other inquiries:

  • Contact information and office hours for all DEIF offices
  • General questions: or call +45 9614 9614 (24/7)
  • Repair (RMA) - Return Material Authorisation
  • Simone Drejer SSD

    Contact us to discuss your options

    - 90 years of energy pioneering
    - Manufactured at the highest standards
    - Superior quality
    - Unmatched service and support
    - Made in Denmark