
Develops and produces custom wound components such as transformers, coils, chokes, transmitters and current transformers.

GT elektronik GmbH & Co. KG
Nabburg · Nabburg (Sauerzapfstrasse) · Vanur (India)New on Amplifa
About GT elektronik
GT elektronik is an owner-managed family business based in Nabburg (Upper Palatinate) and has been developing and producing custom wound components for over 30 years. The product range includes transformers (EI/EE, UI and toroidal core types, 0.35 to 1000 VA), coils (motor, charging, ignition, relay, sensor, magnet and antenna coils, also as self-supporting bake-varnish coils), toroidal cores made of grain-oriented SiFe transformer sheet, chokes (storage, filter, PFC, interference suppression, current-compensated and damping chokes), transmitters as well as current transformers for PCB, cable and DIN rail mounting. Production takes place in small, medium and large series with potting technology (open, vacuum-impregnated or vacuum-potted) and construction according to EN 61558-1 with its own UL insulation system Class F. More than 1000 employees serve more than 250 industrial customers from measurement, control and regulation technology, renewable energies and medical technology. Production takes place in own workshops in Germany and India as well as with a manufacturing partner in Romania.
- Site
- Nabburg
- Processes
- Transformers (EI/EE standard, UI standard, toroidal core standard/custom, linear), Coils (motor, charging, ignition, relay, sensor, magnet and antenna coils; bake-varnish coils), Toroidal cores made of grain-oriented SiFe transformer sheet, Chokes (storage, filter, PFC, interference suppression, current-compensated, damping chokes;, Current transformers (PCB-mountable, high-frequency, for cable/DIN rail), Transmitters (e.g. vacuum-potted SMD transmitter, planar transformer), Potting (open, vacuum-impregnated or vacuum-potted; potting in the tool), Development and design of wound components (requirements analysis to series production)
- Materials
- Grain-oriented SiFe transformer sheet (various grades), Ferrite, Iron powder, Si-Fe, Copper (windings, copper strip), Grain-oriented SiFe transformer sheet, Bake varnish
- Certificates
- DIN EN ISO 9001:2015, DIN EN ISO 14001:2015, VDE certification, ISO 9001, ISO 14001, VDE approval of product series, UL insulation system Class F
- Founded
- 1984
- Employees
- >1000
- Industries
- Measurement, control and regulation technology, Renewable energies, Medical technology
- 01
Requirements analysis and consulting
- 02
Development and design of the wound component
- 03
Coil winding and core manufacturing (toroidal cores made of SiFe transformer
- 04
Potting (open, vacuum-impregnated or vacuum-potted, potting in the tool)
- 05
Series production in small, medium and large series
- 06
Service and energy metering (ipsensor)
Materials and processes
Grain-oriented SiFe transformer sheet
Various grades for toroidal cores and transformer cores.
Copper (windings, copper strip)
Coil, transformer and current transformer windings, also as copper strip winding in the self-supporting power transformer.
Iron powder
Core material for chokes, e.g. storage and damping chokes.
Ferrite
Core material for chokes and PCB-mountable current transformers.
Bake varnish
Insulating varnish for self-supporting bake-varnish coils.
Locations
Nabburg (headquarters)
DEHeadquarters and production
- Lot size
- Small, medium and large series
- Materials
- SiFe transformer sheet, copper, ferrite, iron powder
- Coil winding machines
- Potting systems
- Transformer manufacturing
Nabburg (Sauerzapfstraße 14)
DEProduction
- Lot size
- Small, medium and large series
- Materials
- SiFe transformer sheet, copper, ferrite, iron powder
Vanur (Tamil Nadu)
DEProduction (GT electronic India Pvt. Ltd.)
Components

Inside the production

Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Transformers (EI/EE standard, UI standard, toroidal core standard/custom, linear)Assembly | – | – | – | Small series – Large series | SiFe transformer sheet (grain-oriented), Copper |
| Coils (motor, charging, ignition, relay, sensor, magnet and antenna coils; bake-varnish coils)Assembly | – | – | – | Small series – Large series | Copper, Bake varnish |
| Toroidal cores made of grain-oriented SiFe transformer sheetAssembly | – | – | – | – | SiFe transformer sheet (grain-oriented) |
| Chokes (storage, filter, PFC, interference suppression, current-compensated, damping chokes;Assembly | – | – | – | – | Ferrite, Iron powder, Si-Fe |
| Current transformers (PCB-mountable, high-frequency, for cable/DIN rail)Assembly | – | – | – | – | Ferrite, Copper |
| Transmitters (e.g. vacuum-potted SMD transmitter, planar transformer)Assembly | – | – | – | – | Copper, Ferrite |
| Potting (open, vacuum-impregnated or vacuum-potted; potting in the tool)Surface | – | – | – | – | – |
| Development and design of wound components (requirements analysis to series production)Engineering | – | – | – | – | – |
Additional services
Reference customers
Quality
GT elektronik is certified according to DIN EN ISO 9001:2015 and DIN EN ISO 14001:2015 and offers VDE-approved product series as well as products based on its own UL insulation system Class F (155 °C). Regular audits by international customers complement the quality system.
| Evidence | Nabburg | Nabburg (Sauerzapfstrasse 14) | Vanur (Tamil Nadu) |
|---|---|---|---|
| ISO 9001 | |||
| ISO 14001 | |||
| VDE approval of product series | |||
| UL insulation system Class F |
History
- 1967
Grundt KG, Schwandorf – start of transformer production as a family business
- 1984
Founding of GT elektronik GmbH, Nabburg
- 1996
Expansion of production
- 1996
Certification according to ISO 9000
- 2002
Founding of GT India Pvt. Ltd.
- 2005
Founding of GT mechatronics Pvt. Ltd.
- 2008
New production facilities in Germany and India, expansion of capacities
- 2009
Founding of alttec GmbH
- 2011
Integration of Sycomp GmbH into the group of companies
- 2014
Expansion building in Nabburg
- 2014
Founding of gutre GmbH
- 2020
Merger of gutre and alttec into GT elektronik GmbH & Co. KG
- 2022
Opening of the new Indian production facility