Transformers, power supplies, chokes and EMC filters for industry, energy technology and railway technology.
BLOCK Transformatoren-Elektronik GmbH
Verden (Headquarters) · Verden-Aller · Kunshan (CN) · USANew on Amplifa
About BLOCK
BLOCK Transformatoren-Elektronik GmbH is a family-owned company based in Verden (Aller) and a manufacturer of transformers (control, safety, isolation, autotransformer, mains, toroidal and PCB transformers), switching power supplies, UPS systems, electronic protective switches, redundancy modules as well as chokes and EMC filters. With over 700 employees worldwide and around 85 years of company history, the company develops and manufactures more than 5,000 products per year, of which around 76 % are custom solutions. At the Verden headquarters, research, development and production are combined under one roof; a development center with more than 80 engineers and technicians enables certified custom-made products in as little as three weeks. Further production sites are located in Verden-Aller (AC-Elektronik GmbH), Kunshan (China) and in the USA. Manufacturing includes wound components made of enameled copper wire, resin encapsulation (BLOCK ImpEx) and the company's own Future Winding technology. Customer industries include renewable energies, medical technology, control cabinet construction, machine and plant engineering as well as railway technology.
- Site
- Verden
- Processes
- Transformer manufacturing (control, safety, isolation, autotransformer, mains, toroidal,, Manufacturing of chokes & filters (EMC filters, mains chokes, sine filters, motor chokes, harmonic, Manufacturing of switching power supplies, UPS systems, electronic protective switches, redundancy, Future Winding technology (wound components, single-layer winding structures with cooling channels), Partial Discharge Testing (partial discharge measurement up to 30 kV), X-ray analysis and 3D computed tomography (non-destructive testing), Shock and Vibration Testing (sinusoidal vibration, broadband noise, shock testing), EMC Testing / On-Site Measurements (EMC conformity and development-accompanying testing)
- Materials
- Enameled copper wire (winding wire), Resin (encapsulation BLOCK ImpEx), Printed circuit boards (PCB), Casting and encapsulation resin (BLOCK ImpEx), Ferrite and strip core materials
- Certificates
- ISO 9001:2015, ISO 14001:2015, AEO
- Employees
- 700+
- Industries
- Renewable energies (wind, solar), Medical technology, Control cabinet and control system construction, Intralogistics, Machine and plant engineering, Railway technology
- 01
Development (80+ engineers)
- 02
Winding of wound components (enameled copper wire)
- 03
Encapsulation/resin processing (BLOCK ImpEx)
- 04
Electronics manufacturing (switching power supplies, UPS, protective switches)
- 05
Testing and certification (BLOCK Lab)
- 06
Sales and customer service
Materials & Processes
Enameled copper wire (winding wire)
Base material for transformers, chokes and inductive assemblies; Future Winding uses single-layer winding structures with cooling channels.
Printed circuit boards (PCB)
Carrier material for switching power supplies, UPS systems, electronic protective switches and PCB transformers.
Casting and encapsulation resin (BLOCK ImpEx)
Homogeneous encapsulation of wound components for protection against external influences.
Ferrite and strip core materials
Core materials for EMC filters, mains chokes, sine and motor chokes.
Sites
Verden
DEHeadquarters, production, development, BLOCK Lab
- Materials
- Enameled copper wire, casting resin, PCB
- 3D computed tomograph / X-ray analysis system
- Shock and vibration test system (max. 350 kg, 22.2 kN)
- Partial discharge measuring station (up to 30 kV)
Verden-Aller
DEProduction (AC-Elektronik GmbH)
- Materials
- Transformers, power supplies, chokes
Kunshan
CNProduction and sales (BLOCK Electronics Kunshan Co., Ltd.)
- Materials
- Transformers, chokes
USA
USProduction (BLOCK USA, Inc.)
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Transformer manufacturing (control, safety, isolation, autotransformer, mains, toroidal,Assembly | – | – | – | – | Enameled copper wire, Insulation materials |
| Manufacturing of chokes & filters (EMC filters, mains chokes, sine filters, motor chokes, harmonicAssembly | – | – | – | – | Enameled copper wire, Ferrite/strip core materials |
| Manufacturing of switching power supplies, UPS systems, electronic protective switches, redundancyAssembly | – | – | – | – | Printed circuit boards (PCB) |
| Future Winding technology (wound components, single-layer winding structures with cooling channels)Assembly | – | – | – | – | Copper |
| Partial Discharge Testing (partial discharge measurement up to 30 kV)Testing | – | – | – | – | – |
| X-ray analysis and 3D computed tomography (non-destructive testing)Testing | – | – | – | – | – |
| Shock and Vibration Testing (sinusoidal vibration, broadband noise, shock testing)Testing | – | – | 350 kg (max. test weight) | – | – |
| EMC Testing / On-Site Measurements (EMC conformity and development-accompanying testing)Testing | – | – | – | – | – |
| Material analyses and quality inspection / failure analysis (BLOCK Lab)Testing | – | – | – | – | – |
| Individual product development and certification (custom-made, standards and certification testing)Engineering | – | – | – | – | – |
| Casting/encapsulation of wound components (BLOCK ImpEx, resin encapsulation)Plastics | – | – | – | – | Resin (epoxy/casting resin, uncertain) |
3 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| 3D computed tomograph / X-ray analysis system | – | – | – | – | Verden |
| Shock and vibration test system | – | – | max. test weight 350 kg, max. impulse force 22.2 kN | – | Verden |
| Partial discharge measuring station (up to 30 kV) | – | – | – | – | Verden |
Additional services
Reference customers
Quality & Certification
The in-house testing laboratory BLOCK Lab conducts standards and certification testing, including partial discharge measurement up to 30 kV, X-ray analysis and 3D computed tomography as well as vibration and shock tests (max. 350 kg test weight). Block is certified to ISO 9001:2015, ISO 14001:2015 and AEO.
| Evidence | Verden | Verden-Aller | Kunshan | USA |
|---|---|---|---|---|
| ISO 9001:2015 | ||||
| ISO 14001:2015 | ||||
| AEO |
History
Around 85 years of company history since the company was founded (founding year not explicitly stated on the website)
Introduction of the blue PCB transformers as a milestone of the brand
Development of the Future Winding technology for single-layer winding structures with cooling channels