
Electrical installations, medium-voltage systems and security technology for industry, public-sector clients and the housing sector.

elektro-union freiberg anlagenbau-, handels- und service GmbH
09599 Freiberg, Eherne Schlange 27New on Amplifa
About elektro-union freiberg
elektro-union freiberg GmbH is a medium-sized electrical engineering company based in Freiberg (Saxony), founded in 1958 and employing around 85 staff. Its range of services covers complete electrical installations in the high-current and low-current sectors (up to 1,000 V), IT and network technology (Cat.5e/6/7, fibre optics, WLAN), building automation via bus systems (EIB/KNX), telecommunications and antenna systems, and medium-voltage systems up to 20 kV including transformer substations, cable installations and grid connections. In the field of security technology, the company plans, installs and maintains fire alarm systems according to DIN 14675/VdS, intruder alarm systems, video surveillance, access control and nurse call systems, as well as barrier systems with parking payment systems. In addition, elektro-union provides consulting, planning, installation and maintenance of charging stations for commercial and private customers. Customers come from industry and commerce, the housing sector, healthcare, education and research, as well as from public-sector clients; reference projects have been implemented, among others, for TU Bergakademie Freiberg, TU Dresden, Helmholtz-Zentrum Dresden-Rossendorf, BHARAT Forge Aluminiumtechnik and Freiberg District Hospital. The main area of activity is Freiberg and the greater Dresden, Chemnitz and Leipzig areas, with orders throughout Germany.
- Site
- Freiberg
- Processes
- Electrical installations (new construction and renovation, residential buildings, office complexes,, High-current systems in low-voltage networks up to 1,000 V, Medium-voltage systems, Security technology, Planning, installation and maintenance of electrical systems in the low-current and high-current, Charging stations for commercial and private customers - consulting, planning and installation, Network technology, Bus systems (EIB/KNX) / building automation
- Materials
- High-current up to 1,000 V, Medium voltage up to 20 kV, Network technology, Fire alarm systems, Charging infrastructure
- Certificates
- ISO 9001:2015, Certified specialist company for fire alarm systems DIN 14675, VdS-certified specialist partner for security and surveillance technology, Construction pre-qualification (scope 113-03 fire protection systems, 113-04, Occupational health and safety management system (AMS) BG ETEM, Recognised trade guild company of the Electrical Guild, DIN 14675 fire alarm systems, VdS certified partner for security and surveillance technology, Construction pre-qualification (PQ), AMS BG ETEM, Certified trade guild company (Innungsfachbetrieb) Electrical Guild
- Founded
- 1958
- Employees
- 85
- Industries
- Industry and commerce, Housing sector, Public-sector clients, Education and research, Healthcare and care services, Energy supply
- 01
Consulting and enquiry
- 02
Planning and project design
- 03
Coordination with authorities and grid operators
- 04
Installation and construction
- 05
Testing, commissioning and documentation
- 06
Maintenance and customer service
Services and Technology
High-current up to 1,000 V
Electrical installations in low-voltage networks for residential, office and industrial buildings.
Medium voltage up to 20 kV
Project design, construction, testing and maintenance of power supply systems incl. transformer substations and grid connections.
Network technology
Copper-based data networks Cat.5e/6/7, fibre optics (multimode/singlemode), WLAN and microwave radio links with documented measurements.
Fire alarm systems
Certified planning and installation according to VdS 2129/14675 and DIN 14675 incl. overall fire protection concept and VdS attestation.
Charging infrastructure
Consulting, planning, installation and maintenance of charging stations incl. coordination with grid operators.
Location

Freiberg
DEHead office
- Assembly and testing equipment for high-current, low-current and medium-voltage technology
Systems and Equipment




Inside the production






Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Electrical installations (new construction and renovation, residential buildings, office complexes,Assembly | – | – | – | – | – |
| High-current systems in low-voltage networks up to 1,000 VAssembly | – | – | – | – | – |
| Medium-voltage systemsAssembly | – | – | – | – | – |
| Security technologyAssembly | – | – | – | – | – |
| Planning, installation and maintenance of electrical systems in the low-current and high-currentAssembly | – | – | – | – | – |
| Charging stations for commercial and private customers - consulting, planning and installationAssembly | – | – | – | – | – |
| Network technologyAssembly | – | – | – | – | – |
| Bus systems (EIB/KNX) / building automationAssembly | – | – | – | – | – |
| Telecommunications systems (telephone systems)Assembly | – | – | – | – | – |
| Satellite and antenna systemsAssembly | – | – | – | – | – |
| Fire alarm systemsAssembly | – | – | – | – | – |
| Intruder alarm systemsAssembly | – | – | – | – | – |
| Video surveillanceAssembly | – | – | – | – | – |
| Access control systems / time recordingAssembly | – | – | – | – | – |
| Barrier systems and parking payment systemsAssembly | – | – | – | – | – |
| Nurse call systemsAssembly | – | – | – | – | – |
| Electromobility - charging stations (electrical installation)Assembly | – | – | – | – | – |
| Electrical installation up to 20 kV (medium-voltage range)Assembly | – | – | – | – | – |
Additional services
Reference customers
Quality and Certifications
Quality is safeguarded by a certified QM system according to DIN EN ISO 9001:2015 (TÜV Rheinland, valid until 01.12.2027). In addition, there are certifications as a certified specialist company for fire alarm systems (DIN 14675), as a VdS certified partner for security and surveillance technology, a construction pre-qualification, and a certified occupational health and safety management system (AMS) of BG ETEM.
| Evidence | Freiberg |
|---|---|
| ISO 9001:2015 | |
| DIN 14675 fire alarm systems | |
| VdS certified partner for security and surveillance technology | |
| Construction pre-qualification (PQ) | |
| AMS BG ETEM | |
| Certified trade guild company (Innungsfachbetrieb) Electrical Guild |
Company History
- 1958
Founding of the PGH Elektrobau in Freiberg, emerging from the electrical installation business of Willi Gerstner.
- 1990
Conversion into elektro-union freiberg anlagenbau-, handels- und service GmbH; establishment of the technical wholesale business.
- 2003
Initial certification according to ISO 9001.
- 2006
Mirko Seifert takes over the management from Klaus Kempe.
- 2009
Initial pre-qualification as a construction company (10.07.2009).
- 2024
Management restructured (Nico Müller); ISO 9001:2015 certificate renewed (02.12.2024–01.12.2027).