Development and manufacturing of fuses for all voltage levels – from device protection to high voltage.
SIBA GmbH
Lünen (Headquarters) · Písek · Greve · Best · Loughborough · Stare Babice · Vösendorf · West Caldwell, NJ · Beijing · SingaporeNew on Amplifa
Fuses are our passion
SIBA GmbH is a family-owned manufacturer of fuses, founded in 1946 and headquartered in Lünen. The company develops and manufactures low-voltage fuses (NH), high-voltage fuses (HH), ULTRA rapid® semiconductor protection fuses, device protection fuses and special-purpose fuses, as well as accessories such as fuse holders, bases and indicator systems – more than 10,000 product variants available for delivery in total. Manufacturing is characterized by high vertical integration and a largely integrated value chain with in-house special machinery construction. Materials used include fine silver for fuse elements, copper for contacts, electroporcelain, thermally conductive special ceramics, glass-fiber-reinforced plastic and quartz sand as arc-quenching filler. Customers come from power generation and distribution, renewable energies, battery storage systems, rail technology, smart grids, power electronics, industrial automation and other industries. With more than 500 employees at the Lünen production site, subsidiaries in Europe, Asia and the USA, and sales partners in more than 40 countries, SIBA supplies customers worldwide.
- Site
- Lünen
- Processes
- Custom engineering / customized fuse development, Fast-track development partnership, In-house development and manufacturing (high vertical integration, own special machinery, Technical consulting and application support, Special designs (special-purpose fuses), Accessories: fuse holders, bases, indicator systems
- Materials
- Fine silver (fuse elements), Copper (blade contacts, recyclable), Silver (recyclable), Electroporcelain, Glass-fiber-reinforced plastic, Quartz sand (filler), Ceramics (thermally conductive special ceramics, stable ceramic construction), Copper
- Certificates
- ISO 9001:2015, ISO 14001:2015, VDE approvals, UL Listed / cULus, SEMKO, CE, EAC
- Founded
- 1946
- Employees
- over 500
- Industries
- Power generation and distribution, Renewable energies / Photovoltaics, Battery storage systems (BESS), Rail technology, Smart grids, Metering equipment and devices
- 01
Development and custom engineering
- 02
Design
- 03
In-house special machinery construction
- 04
Manufacturing of fuse links
- 05
Testing and certification
- 06
Sales and after-sales
Materials and processes
Fine silver (fuse elements)
Fuse elements in ULTRA rapid® fuses for extremely fast, current-limiting interruption; recyclable.
Copper
Blade contacts and terminal tabs in NH and high-voltage fuse links; recyclable.
Electroporcelain
Tube material for high-voltage fuses with permanently elastic sealing against moisture and corrosion.
Thermally conductive special ceramics
Material for device protection and ULTRA rapid® fuses to stabilize electrical values over the service life.
Glass-fiber-reinforced plastic
Tube material for high-voltage fuses with a robust, corrosion-resistant construction.
Quartz sand (arc-quenching filler)
Filler material for arc quenching in fuse links, reduces heating in continuous operation.
Locations
Lünen
DEDevelopment and Production / Headquarters
- Materials
- Fine silver, copper, electroporcelain, ceramics, GFRP, quartz sand
- In-house special machinery construction (production equipment for fuse manufacturing)
Písek
CZSubsidiary (SIBA Písek s.r.o.)
Greve
DKSubsidiary (SIBA Sikringer Danmark A/S)
Best
NLSubsidiary (SIBA Nederland B.V.)
Loughborough
GBSubsidiary (SIBA UK LTD.)
Stare Babice
PLSubsidiary (SIBA Polska sp. z o.o.)
Vösendorf near Vienna
ATSubsidiary (SIBA Sicherungen- und Schalterbau GmbH & Co. KG)
West Caldwell, NJ
USSubsidiary (SIBA Fuses LLC)
Beijing
CNRepresentative office (SIBA GmbH Beijing Rep. Office)
Singapore
SGSubsidiary (SIBA ASIA Pte. Ltd.)
Products
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Engineering | – | – | – | – | Electroporcelain, Glass-fiber-reinforced plastic, Fine silver, Copper, Quartz sand |
| Engineering | – | – | – | – | Electroporcelain, Glass-fiber-reinforced plastic, Fine silver, Copper, Quartz sand, Plastic |
| Joining | – | – | – | – | Copper, Silver, Ceramics |
| Testing | – | – | – | – | – |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Special machinery | SIBA (in-house special machinery construction) | – | – | – | – |
Additional services
Quality and certification
SIBA is certified to DIN EN ISO 9001 and DIN EN ISO 14001 (TÜV Rheinland Cert GmbH). Products are supplied with documented testing and international approvals (VDE, SEMKO, UL Listed/cULus, CSA, cRUus, CE, EAC) in accordance with IEC 60269, IEC 60282-1 and UL 248.
| Evidence | Lünen |
|---|---|
| ISO 9001:2015 | |
| ISO 14001:2015 | |
| VDE approvals | |
| UL Listed / cULus | |
| SEMKO | |
| CE | |
| EAC |
History
- 1946
Founding of SIBA
Fuse specialist for over 80 years; Top Company 2026 award