About us

Medium-sized company big in the whole world:

Our products can be found all over the globe from Alaska to Australia!

SAFETY FOR HUMAN BEINGS AND MACHINES SINCE 1925

+49 641 97224 0
+49 641 97224 22
info@duk.eu

Company portrait

DUK is a third-generation family business that still lives the traditional fundamental idea of high-quality, durable quality products.

From the very beginning, the company has produced with current manufacturing and quality standards. The technical know-how of the experienced DUK staff allows individual advice and support.

Our products, which are manufactured exclusively in Germany, allow individual , customer-specific adaptions due to the high degree of in-house production depth.

Family run in 3rd and 4th generation. We are here for you with pleasure...

Eckart & anke Maas

General Manager

Lara - Kristin Maas, M.Sc.

Assistance to General Manager

Company history

Since 1925, the company name DUK has been known worldwide for high-quality and durable switchgear for automatic and manual control as well as protection in industrial plants and conveyor technology. The programme, which was initially designed for railway lines, has increasingly focused on switchgear over time.

1925

Leipzig | 1st generation

Founded in Leipzig as Kerzler and Dittelbach by engineers Kurt Kerzler and Karl Dittelbach

Program: Slip ring bodies, eletrical accessoires for train lines and cable drums for industrial lignite mining

1925 - 1955

Innovations in the field of German crane construction

Successive chnage of program towards construction of switchgear away from railroad line

1955

Giessen | 2nd generation

Relocation of the company headquarters

Increasing communist influences in East Germany necessitate the move to West Germany
First occupation of the present production facility in Giessen
Move to Giessen into own production buildings
Re-establishment as Dittelbach and Kerzler
Sons Martin Dittelbach and Helmut Kerzler join the company

1955 - 1965

Steady expansion of production and switch program

Multiple additions and expansion of production capacity
Expansion of the switch program (patents)
Design of the housing of the LHM switches still existing today

since 1965

OEM - Original Equipment Manufacturer

DUK becomes original equipment manufacturer for customers like AEG, BBC, Siemens and many others

1978

LHP Switches

Additional offer of LHM also as LHP in polyester

1993

Gießen | 3rd generation

Change of management

Eckart Maas becomes general manager following his uncle Martin Dittelbach

1995

Quality management

Quality assurance according to the ISO 9000 series

1996

CNC manufacturing

Automation of production with CNC machines

1996 - 2005

Expansion and differentiation

Successive diversification of switch types according to individual customer requirements
Establishment and expansion of the network of distributors
Development of markets on all inhabited continents

2005

The brand DUK is protected

2011

AEO - certification (Authorised Economic Operator)

2017

ATEX certification

ATEX certification of the Ex-protected switchgears
Thus it is possible to produce switchgear for zone 21 and mining

since 2018

Fast processing

Approved exporter and registered exporter REX (Canada)
Fastest possible and flexible customs clearance enables high responsiveness

2021

Gießen | 4th generation

Management strengthening

Lara-Kristin Maas joins company after her postgraduate studies in environmental technologies in Great Britain

Our claim

The future

2025

100 years DUK

2030

DUK is climate neutral