Planning, manufacturing and commissioning of switchgear, plant control systems and UPS/standby power systems for industry and plant engineering
Elektrotechnik Thoms GmbH
Syke (headquarters) · Ahrensburg (bsb automation GmbH) · RothNew on Amplifa
About Elektrotechnik Thoms
Elektrotechnik Thoms GmbH is an owner-managed company from Syke with around 90 employees and three locations. Since 1997, the company has evolved from a switchgear manufacturer into a full-service provider of technical infrastructure. It manufactures complete electrical switchgear and plant control systems for machine and plant engineering, including power distribution switchgear up to 4000 A below 1000 V, standby power systems (NEA), uninterruptible power supplies (UPS), container systems, test benches and custom power cabinets. In addition to switchgear construction, the portfolio includes EMSR engineering, PLC software development, visualization, retrofit of discontinued control systems as well as CNC machining of control cabinet enclosures made of sheet steel, stainless steel and plastic from lot size 1. The offering is complemented by automation solutions for industrial heat, industrial refrigeration, HVAC, compressed air, combustion and process plants, as well as service, repair and battery service. Projects are implemented from planning through manufacturing to commissioning across Europe as well as in North America (UL/CSA). Since 2024, Thoms has held a 60% stake in bsb automation GmbH in Ahrensburg.
- Site
- Syke
- Processes
- Switchgear construction, Plant control / automation (PLC), Software development and visualization, CNC machining of control cabinets (drilling, milling, cutting), Painting of enclosures (from lot size 1, with partners), Power distribution switchgear up to 4000 A < 1000 V, Control cabinet for pneumatic pressure control (fully assembled, wired, tested), IP54, Standby power systems (NEA), stationary or in containers
- Materials
- Sheet steel, Stainless steel, Plastic (enclosures), Plastic
- Certificates
- ISO 9001, UL/CSA engineering (UL 508A), CE conformity / standards management
- Founded
- 1997
- Employees
- 90
- Industries
- Machine and plant engineering, Food industry, Chemical industry, Energy supply/power plant, Building services/HVAC, Industry/commerce
- 01
Consulting and site assessment
- 02
Engineering (EMSR, hardware/software planning)
- 03
CNC machining of enclosures
- 04
Switchgear construction and assembly
- 05
PLC programming and visualization
- 06
Transport and installation
- 07
Commissioning
- 08
Service, maintenance and retrofit
Materials and Processes
Sheet steel
Material for power cabinets and control cabinet enclosures up to floor-standing cabinets.
Stainless steel
Used for stainless steel enclosures in CNC machining of control cabinets.
Plastic
Material for small enclosures, terminal boxes and bus housings in CNC machining.
Locations
Syke
DEHeadquarters, administration and manufacturing
- Lot size
- Lot size 1 (CNC machining)
- Materials
- Sheet steel, stainless steel, plastic
- CNC machining of control cabinets (drilling/milling)
- EPLAN Pro Panel / CAD data generation
- Manufacture of emergency power containers
Ahrensburg
DEBranch office bsb automation GmbH (60% stake since 2024)
Roth
DEBranch office (since 2012)
Products and Systems
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Switchgear constructionEngineering | – | – | – | – | Sheet steel, Stainless steel, Plastic |
| Plant control / automation (PLC)Engineering | – | – | – | – | – |
| Software development and visualizationEngineering | – | – | – | – | – |
| CNC machining of control cabinets (drilling, milling, cutting)Machining | – | – | – | Lot size 1 | Plastic, Steel, Stainless steel |
| Painting of enclosures (from lot size 1, with partners)Surface | – | – | – | Lot size 1 | Steel, Stainless steel |
| Power distribution switchgear up to 4000 A < 1000 VEngineering | – | – | – | – | Sheet steel, Plastic, Stainless steel |
| Control cabinet for pneumatic pressure control (fully assembled, wired, tested), IP54Engineering | – | – | Approx. 30kg | – | Sheet steel, Plastic, Stainless steel |
| Standby power systems (NEA), stationary or in containersEngineering | – | – | – | – | – |
| Uninterruptible power supply (UPS), stationary or in container systemsEngineering | – | – | – | – | – |
| Container systems (switchgear, NEA, UPS in containers)Assembly | – | – | – | – | – |
| Medium voltage systems (with partners)Engineering | – | – | – | – | – |
| Test benches and test stations (custom test equipment)Testing | – | – | – | – | – |
| Engineering (EMSR, supply technology, standards/regulations)Engineering | – | – | – | – | – |
| Safety-related upgrading (steam, hot water, refrigeration NH3)Engineering | – | – | – | – | – |
| Retrofit of control and plant systems (e.g. Siemens S5/S7-300)Engineering | – | – | – | – | – |
| Special machinery (punching machines, robot cells, assembly fixtures, printing machines,Assembly | – | – | – | – | – |
| Industrial heat: boiler systems (large water boilers, water-tube boilers, solid fuel boilers,Assembly | – | – | – | – | – |
| Autoclaves (gas-tight pressure vessels)Casting | – | – | – | – | – |
| Water treatment technologyAssembly | – | – | – | – | – |
| Condensate management and heat recoveryAssembly | – | – | – | – | – |
| Hot gas generatorsAssembly | – | – | – | – | – |
| Industrial refrigeration (refrigeration systems with separator, economizer, screw and pistonAssembly | – | – | – | – | – |
| HVAC systems (heating, ventilation, refrigeration; supply/exhaust air, afterheaters, coolers, heatAssembly | – | – | – | – | – |
| Compressed air generation (compressor system automation)Assembly | – | – | – | – | – |
| Combustion technology (digital combustion managers, fail-safe controls)Assembly | – | – | – | – | – |
| Safety technology (SAA, hold-open systems, ZKA, RWA, EMA)Assembly | – | – | – | – | – |
| Process plants (valve clusters, reactors, wastewater treatment plants)Assembly | – | – | – | – | – |
| Service and repair (robotic, CNC, PLC, touch systems, electronic assemblies)Testing | – | – | – | – | – |
| Steam trap inspection & maintenanceTesting | – | – | – | – | – |
| Battery service (testing, maintenance, regeneration: Sb, Ca/Ca+, silver, lithium, Ni-Cd, AGM, GEL)Testing | – | – | – | – | – |
| UL/CSA-compliant engineering (UL 508A, CSA)Engineering | – | – | – | – | – |
3 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC machining (drilling/milling of control cabinets) | – | – | – | – | Syke |
| Emergency power container | – | – | – | – | Syke |
| PLC control (industrial micro PLC, Modbus RS232) | – | – | – | – | Syke |
Additional services
Reference customers
Quality and Standards
The processes are certified to ISO 9001; a documentation and quality manager accompanies projects and documentation. For CE conformity and UL/CSA export (UL 508A, CSA), risk assessments, standards management and complete documentation are prepared.
| Evidence | Syke | Ahrensburg | Roth |
|---|---|---|---|
| ISO 9001 | |||
| UL/CSA engineering (UL 508A) | |||
| CE conformity / standards management |
Company History
- 1997
Company founded by Peter Thoms
- 2006
Relocation to the Seckenhausen industrial estate, production expansion
- 2007
Foundation of Elektrotechnik Thoms GmbH
- 2009
Expansion of the management board, succession arrangements
- 2010
Growth and new markets; new facility in Bremen
- 2011
Relocation to Syke, production expansion
- 2012
Establishment of a branch office in Roth (near Nuremberg)
- 2017
Expansion of the Syke site with additional office space
- 2021
Siemens Solution Partner (Industrial Communications & Factory Automation)
- 2023/2024
New construction of the company site in Syke
- 2024
60% stake in bsb automation GmbH in Ahrensburg; move into the new company building in Syke
- 2025
Peter Thoms steps down from the management board and takes on a new role within the company