
Development, production and distribution of electrical terminal blocks and connectors for lighting, electrical appliances and installation

Adels-Contact Elektrotechnische Fabrik GmbH & Co. KG
Bergisch Gladbach, 51469New on Amplifa
Adels-Contact – Specialist for electrical connection technology
Adels-Contact is a medium-sized, group-independent, family-owned industrial company based in Bergisch Gladbach. The company develops, produces and distributes electrical terminal blocks and connectors for building technology as well as for manufacturers of lighting and electrical appliances, including screw terminals, plug-in terminals, installation connectors (AC 166, AC 164), SMD terminals, circular connectors and IP68 round terminals, luminaire connectors, fuse terminals, the LEDtrack track lighting system and the terminaLED LED distribution box. Production comprises plastic injection moulding of terminal and connector housings, metalworking on drilling machines, rotary-table machines and cam-controlled rotary transfer machines, punching, as well as assembly machines and module assemblies, complemented by cable assembly via the QDP rapid delivery service. Insulating materials are polyamides (PA, PA HT, PA GW), polyphthalamide, thermoplastic elastomers, polystyrene and porcelain/steatite; contact parts are made of metal. Customer-specific custom solutions are developed, glow-wire tests according to EN 60998-1 and EN 60335-1 are performed, and the products comply with standards such as RoHS, WEEE, PFOS, REACH and CE. With around 100 employees, the company supplies about 60 countries via a worldwide network of sales partners.
- Site
- Bergisch Gladbach
- Processes
- Plastic injection moulding (injection moulding of terminal/connector housings), Metalworking on drilling machines (rotary-table machines) with cleaning system, Machining on cam-controlled rotary transfer machines (production of components for connectors and, Punching machines (punching in metal production), Assembly machines / module assemblies (assembly of connectors and terminals), Assembly of connecting and interconnecting cables (AC 166®, AC 164,, Development of customer-specific custom solutions for connection technology, Glow-wire tests according to EN 60998-1 and EN 60335-1 (GWT 750 °C, GWIT 775 °C)
- Materials
- Polyamide (PA), High-temperature polyamide (PA HT), Polyamide Glow-Wire/GWIT (PA GW), Polyphthalamide, Porcelain/Steatite, Thermoplastic elastomers, Polystyrene, Copper (conductor material of the connecting cables)
- Certificates
- DIN EN ISO 9001:2015, DIN EN ISO 14001:2015
- Founded
- 1930
- Employees
- 100
- Industries
- Lighting/luminaire manufacturing, Electrical appliances (HVAC), Electronics, Building technology/installation, Furniture, display and trade fair construction
- 01
Development of custom-specific solutions
- 02
Plastic injection moulding of the housings
- 03
Metalworking (drilling machines, rotary transfer machines, punching)
- 04
Cleaning of the metal parts
- 05
Assembly of connectors and terminals
- 06
Cable assembly (QDP rapid delivery service)
- 07
Module assembly
- 08
Distribution via worldwide sales partner network
Insulating materials and manufacturing processes
Polyamide
Terminals and connectors of the standard range; high insulation value, break-resistant, asbestos-/halogen-free, corrosion-neutral, resistant to weather, ozone, UV, solvents, oil and grease.
High-temperature polyamide
Screw terminals for use at regularly elevated ambient temperatures.
Polyamide Glow-Wire/GWIT
Terminals for household and similar appliances according to EN 60335-1; high fire resistance (GWIT 775 °C without glass fibre), halogen-free.
Polyphthalamide
SMD terminals; temperature-resistant at high soldering temperatures (reflow soldering).
Porcelain/Steatite
Terminals for use at regularly extremely high ambient temperatures; high-temperature resistant and ageing-resistant.
Thermoplastic elastomers
Seals against the ingress of dust and moisture; high protection against dust and moisture.
Polystyrene
Labels/markers; fine contours, straight surfaces and edges, easy to print on.
Copper
Conductor material of the connecting cables.
Bergisch Gladbach site
Bergisch Gladbach
DEHead office with development, production (plastic injection moulding, metalworking, assembly machines) and sales
- Materials
- PA, PA HT, PA GW, PPA, porcelain/steatite, TPE, PS, metal
- Injection moulding machines (Arburg Allrounder)
- Drilling machines/rotary-table machines
- Cleaning system for metal production
- Cam-controlled rotary transfer machines
- Assembly machines
- Punching machines
Connection technology products




Inside the production

Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Plastic injection moulding (injection moulding of terminal/connector housings)Plastics | – | – | – | – | PA, PA HT, PA GW, PPA, TPE, PS |
| Metalworking on drilling machines (rotary-table machines) with cleaning systemMachining | – | – | – | – | Metal (contact parts, copper/brass not specified) |
| Machining on cam-controlled rotary transfer machines (production of components for connectors andMachining | according to DIN ISO 2768 | – | – | – | Metal |
| Punching machines (punching in metal production)Forming | – | – | – | – | Metal |
| Assembly machines / module assemblies (assembly of connectors and terminals)Assembly | – | – | – | – | – |
| Assembly of connecting and interconnecting cables (AC 166®, AC 164,Assembly | – | – | – | – | Copper conductor, PVC (H05VV-F), halogen-free cable (H05Z1Z1-F) |
| Development of customer-specific custom solutions for connection technologyEngineering | – | – | – | – | – |
| Glow-wire tests according to EN 60998-1 and EN 60335-1 (GWT 750 °C, GWIT 775 °C)Testing | – | – | – | – | – |
7 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Injection moulding machine (Allrounder) | Arburg (Allrounder series) | – | – | 2023 (Erwe | Bergisch Gladbach |
| Drilling machine / rotary-table machine | – | – | – | 2021 (Inve | Bergisch Gladbach |
| Cleaning system (metal production) | – | – | – | 2021 (Inve | Bergisch Gladbach |
| Cam-controlled rotary transfer machine | – | – | – | – | Bergisch Gladbach |
| Assembly machine | – | – | – | – | Bergisch Gladbach |
| Punching machine | – | – | – | – | Bergisch Gladbach |
| Luminaire assembly machine (SMD terminal processing, reference) | – | – | – | – | – |
Additional services
Reference customers
Quality and environmental management system
The reliability of the products is ensured by compliance with all standards such as RoHS, WEEE, PFOS, REACH and CE. The quality and environmental management system is certified by TÜV NORD according to DIN EN ISO 9001:2015 and DIN EN ISO 14001:2015; glow-wire tests are performed according to EN 60998-1 and EN 60335-1 (GWT 750 °C, GWIT 775 °C).
| Evidence | Bergisch Gladbach |
|---|---|
| DIN EN ISO 9001:2015 | |
| DIN EN ISO 14001:2015 |
Holst since 1930
- 1930
Founded under the name "Tony Adels"
- 1979
Introduction of the Euro terminal as a Europe-wide standard for screw terminals
- 1982
Acquisition by J.H. Hochköppler and renaming to Adels-Contact
- 1994
Initial certification according to DIN EN ISO 9001
- 1995
Introduction of the AC 166® installation connector system
- 2001
Initial certification according to DIN EN ISO 14001
- 2002
Acquisition and restructuring of the "Britanniahütte" plant
- 2006
Best supplier award Philips Lighting for the IP65 luminaire connector slide
- 2014
Introduction of IP68 circular connectors/terminals in cooperation with Techno S.r.L.; ultra-flat SMDflat LED terminal
- 2019
11-pole LEDtrack track lighting system goes into series production; online product finder
- 2024
LEDtrack GEN2; LCS 75 PRO with strain relief
- 2025
AC 166 GVB distribution boxes; 20 years of partnership with TIV GmbH and the Omega Group
- 2026
BSFZ seal award/funding notice from the Federal Ministry of Research, Technology and Space; AC 177 micro IP68 round terminal