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Medium Voltage Fuses for Capacitors Back-up North American Style. 

The new range of SIBA HV fuse-links HHC provides maximum protection in capacitor applications. The fuses are designed to be mounted directly to the capacitor bushings in individual fusing applications, indoor and outdoor. The fuses are available in a variety of different thread sizes such as 1/2 inch, M12, M16. An additional L-shape range for bus-mounting also provides a 50 N striker for both visualizing the fuse operation and triggering the SIBA Micro-Switch-Fitting 3100210. This Micro-Switch-Fitting produces an electrical signal for each operated fuse.


Rated voltage

In contrast to a standard HV fuse-link, all HHC types already respect the higher voltage level necessary for a proper capacitor protection. Therefore, the rated voltage of a HHC fuse-link can be the same as the application voltage, also the case of floating-wye connections. For example an 8.3 kV fuse can be placed in a 7.96 kV floating-wye system.


Rated current

To respect the influences and tolerances mentioned in

IEEE 18-1992, like:

  • Tolerance of capacitor rating S = 1,15xS
  • Tolerance of the application voltage U = 1.1xU
  • Harmonic influences
  • Inrush currents

The rated current of the selected SIBA HHC fuse-link shall be min. 2 times the operation current of the application




Our staff possesses decades of in-depth application knowledge and we are eager to share it with you. All of our field engineers have control gear and fuse backgrounds, making us uniquely qualified to provide solutions to your protection problems. We offer selection software to accurately apply our products, fuse audits to help you streamline your operations, or in-house seminars to educate your personnel. Ask us! 


From the friendly voice that answers the phone, to the delivery that arrives before you expect it, we pride ourselves on delivering the absolute highest level of customer service. At Fusetek, customer service is not an empty promise but the way we do business, each and every day. Use us! 


Can’t find that unusual fuse? Not sure about a particular application? We can help. 

Our quick, knowledgeable replies get you the answers you need, when you need them.   Whether it’s technical assistance, help in finding that special fuse, or quick turnaround to get you out of a jam, we’re here for you. Call us!

Contact Us

Toll free for North America
Tel: 1-800-479-3875
Fax: 1-800-866-7690
International Tel: 1-613-384-4144 International Fax: 1-613-384-0167

Email: info@fusetek.comMailing Address: 599 Norris Crt.
Kingston, Ontario
Canada K7P 2R9