Leading electrical service provider in German-speaking Switzerland for electrical installations, switchgear construction, building technology and photovoltaics since 1868.
Baumann Koelliker Management AG
Zurich · Muri · Neuhausen am Rheinfall · Horgen · Wädenswil · Dintikon · Sins · Hinwil · Dättwil · Frauenfeld · Olten · Rheinfelden · Schaffhausen · Zug · Romanshorn · Kreuzlingen · WeinfeldenNew on Amplifa
About the Baumann Koelliker Group
The Baumann Koelliker Group is an electrical service provider established in 1868 with 16 independent companies and around 1250 skilled professionals in German-speaking Switzerland. The Group implements electrical installations (power and low-current, lighting), designs and manufactures switchgear and control systems to national and international standards – from simple distribution boards and main distribution boards up to 1600 A and low-voltage installations up to 2500 A to machine and heat pump control systems – as well as cable assembly. Further business areas are fiber optics and cable construction, building technology with KNX and Loxone automation, photovoltaics, electromobility, smart energy, telematics and IT solutions. Customers come from residential construction, industry, commerce, public buildings, gastronomy/hotels and the energy supply sector. The Group is family-owned and run in the third generation and offers service and maintenance including a 24/7 on-call duty.
- Site
- Zürich
- Processes
- Switchgear construction (design and manufacture of switchgear assemblies), Control system construction for machines and heat pumps, Main distribution boards up to 1600A, Low-voltage installations up to 2500A, Cable assembly, Machine control systems, Power current, low current and lighting installations (lighting and power installations), Fiber optics: splicing, measurements, fiber optic cable installation
- Materials
- Copper, Optical fiber (glass fiber), Optical Fiber (Glass Fiber), Steel & Plastic
- Certificates
- Seco accreditation (electrical inspection)
- Founded
- 1868
- Employees
- 1250
- Industries
- Residential construction, Industry, Commerce, Public buildings, Gastronomy & Hotels, Office fit-out
- 01
Planning & Consulting
- 02
Switchgear Design
- 03
Switchgear/Control System Construction
- 04
Cable Assembly
- 05
Electrical Installation & Commissioning
- 06
Inspection & Safety
- 07
Service & Maintenance (24/7)
Materials & Components
Copper
Conductor material for switchgear, distribution boards and cable assembly.
Optical Fiber (Glass Fiber)
Used in fiber optic projects: splicing, measurements, cable installation.
Steel & Plastic
Enclosure and cable material in switchgear and installation construction.
Group Locations
Zurich (Baumann Koelliker AG)
CHLargest business unit: building technology, fiber optics, renewable energy; headquarters of Baumann Koelliker
- Lot size
- Individual projects to large projects
- Materials
- Copper, Plastic
- Switchgear manufacturing
- Fiber optic splicing and measurement technology
Muri (Beltech Schaltanlagen AG)
CHSwitchgear construction and control system construction for machines and heat pumps
- Lot size
- Individual and series production
- Materials
- Copper, Steel, Plastic
- Switchgear manufacturing
Neuhausen am Rheinfall (Bolanz AG)
CHSwitchgear construction for buildings, commerce and industry with control solutions
- Materials
- Copper, Steel
Components & Products
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Switchgear construction (design and manufacture of switchgear assemblies)Assembly | – | – | – | – | Copper, Plastic, Steel |
| Control system construction for machines and heat pumpsAssembly | – | – | – | – | – |
| Main distribution boards up to 1600AAssembly | – | – | 1600 A | – | – |
| Low-voltage installations up to 2500AAssembly | – | – | 2500 A | – | – |
| Cable assemblyAssembly | – | – | – | – | Copper, Plastic |
| Machine control systemsAssembly | – | – | – | – | – |
| Power current, low current and lighting installations (lighting and power installations)Assembly | – | – | – | – | Copper, Plastic |
| Fiber optics: splicing, measurements, fiber optic cable installationAssembly | – | – | – | – | Glass (optical fiber), Plastic |
| Cable construction: excavation work, duct systems, cable pulls, distribution cabinetsAssembly | – | – | – | – | – |
| Building automation (KNX, Loxone, Smart Home)Assembly | – | – | – | – | – |
| Photovoltaic systems (planning, installation, commissioning)Assembly | – | – | – | – | Silicon, Aluminium, Copper |
| Electromobility: charging stations (consulting, installation, programming, maintenance)Assembly | – | – | – | – | – |
| Smart Energy: energy management for PV systems, shared charging facilities, heat sources, loadEngineering | – | – | – | – | – |
| Telematics: data networks, VoIP, telephone systemsAssembly | – | – | – | – | – |
| Planning & Consulting (analysis, concept, quotation, detailed planning, site management)Engineering | – | – | – | – | – |
| Inspection & Safety (periodic inspections, final inspections, earthing measurement, thermography)Testing | – | – | – | – | – |
| Service & maintenance with 24/7 on-call duty and maintenance contractsAssembly | – | – | – | – | – |
| IT (IT as a Service, IT security, cloud, IT infrastructure)Engineering | – | – | – | – | – |
2 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Inverter (PV system Stirag Süd, customer project) | Huawei 100KTL | 4 | – | – | Olten |
| Medium-voltage protection device (PV system customer project) | Siemens | – | – | – | Olten |
Additional services
Reference customers
Quality & Testing
Electro Inspect AG specializes in the inspection and safety of electrical installations and is one of only a few Swiss companies officially accredited by the Seco. Services include periodic inspections, final inspections, earthing measurements, thermography and network analyses.
| Evidence | Electro Inspect AG |
|---|---|
| Seco accreditation (electrical inspection) |
Company History
- 1868
Founding of the company Stirnemann & Weissenbach in Zurich by Otto Stirnemann and Werner Weissenbach
- 1884
Installation of the first 500 arc lamps of the city of Zurich
- 1905
Renaming to Baumann, Kölliker & Co.
- 1919
Conversion into the joint-stock company Baumann, Koelliker AG
- 1920
Electrification of the Rhaetian Railway Landquart–Davos–Filisur
- 1943
Dr. Gustav Gerber joins the company; acquisition of the share package in 1946
- 1946
Major contract Zurich Airport: planning of the entire electrical installations
- 1951
Contract from the Grand Duchy of Luxembourg for the extended airport
- 2011-2020
Frank Gerber takes over the company from his father; growth of the Group
- 2018
Swiss Employer Award
- 2025
Swiss Employer Award (second win)