About Us

Who we are

In 1989, Heinz Müller and Peter Lehmann founded the company Retus Arch AG, which was active in industrial plant construction. Already two years later, the young company moved from Arch to Leuzigen and was renamed ELPEX AG (Elektro Projekt Engineering). In 2009, the company celebrated its 20th birthday. 40 Staff members and trainees are employed in Kirchberg today.
ELPEX AG projects, constructs and supports complex switchgear (SPS and CNC controls).These days, there is a little ELPEX behind just about everything. It is possible that your daily yoghurt was filled by a system running with ELPEX controls.

ELPEX Products and services enjoy an excellent reputation. The success story is backed by intense know-how, long-term national and international experience and an expertly trained and motivated team.



Move from Burgdorf and Grenchen to Kirchberg


The company, meanwhile employing 20 staff members and trainees in Burgdorf and Grenchen, celebrated its 20th birthday.


Relocation of the Leuzigen branch office to Burgdorf (customer-specific orders))


Purchase of business property in Grenchen


Part of the company moves to Grenchen (serial production) Relocation of head office to Grenchen


Move from Arch to Leuzigen, renaming the company name to Elpex AG ((Elektro Projekt Engineering)


Founding of Retus Arch AG in Arch


Where to find us

Industrie Neuhof 23A
CH 3422 Kirchberg

+41 (0)34 426 26 00

    Industrie Neuhof 23A
    CH-3422 Kirchberg

  • Phone: +41 34 426 26 00
    Fax: +41 34 426 26 09
    E-Mail: This email address is being protected from spambots. You need JavaScript enabled to view it.