As an experienced supplier of protection solutions for electrical installations, we offer high-voltage fuse-links that ensure the highest levels of safety and efficiency. Our products are tested in accordance with international standards (IEC) and have been proving their worth for many decades in a variety of industries.

High current limit – minimal mechanical stress

High-voltage fuse-links interrupt fault currents as early as the first half-cycle. This drastically reduces the peak short‑circuit withstand current, thereby minimizing the mechanical stress on cables and switchgear. For operators, this means less damage, a longer service life and lower repair costs. 

Very high breaking capacity – protection even under extreme conditions

With typical values ranging from 40kA to 80kA, and in some cases exceeding 100kA, our fuse-links reliably interrupt even extreme short circuit currents. This protects your systems from downtime and achieves the highest protection standards in critical infrastructure.

Rapid fault interruption – protection of sensitive equipment

Disconnection times in the millisecond range prevent damage to transformers, motors and cables.

Current-limiting effect – enhanced protection for people and machinery

Reduction of the let-through energy (I²t) lowers the arc energy at the fault location. This improves personal safety and protects your equipment from consequential damage.

Robust construction – decades of operational experience

Our fuse-links are made of electrical porcelain or glass fiber-reinforced plastic and are protected against moisture, dust and corrosion via permanently elastic seals. This ensures a high level of operational reliability even in harsh environmental conditions.

Compact design – high-performance with a small footprint

High-voltage fuse-links have high breaking capacity while taking up comparatively little space and costing less than power switches. This saves on installation space and capital expenditure without compromising on protection.

Flexible customization – solutions for special requirements

Whether oil-immersed transformers, outdoor installations or enclosed switchgear – we supply variants for all applications. Special designs (HHx) comply with international standards and specific requirements.

Optional additional features – greater control and protection

By using strike pins for the mechanical tripping of load switches and temperature-limiting tripping devices, you can prevent thermal damage in the event of prolonged overloads. This ensures maximum operational reliability.

Low power dissipation – efficiency in continuous operation

Optimized fuse element designs and quartz sand fillings reduce heating during continuous operation. This translates into higher energy efficiency and lower 
operating costs.
These features make our fuse-links the ideal solution for demanding high-voltage applications – even under cyclic loads and at high ambient temperatures.

Our high-voltage fuse-links are not only suitable for general-purpose use but are also available in specialized versions:

• Motor protection fuses: Designed for high inrush currents and cyclic loads. The selection is based on diagrams that take into account inrush current, ramp-up time and frequency.
• Voltage transformer fuse-links: Rapidly disconnect the converter from the mains in the event of a fault.
• Capacitor protection: Protection against inrush currents on power-up. The rated current should be at least twice that of the capacitor bank.

For complex requirements, we offer customized versions on request – tailored to your specific technical needs.