The RN3 series products are suitable for indoor distribution systems with an AC frequency of 50Hz and a rated voltage of (3-35) kV. They are used as overload or short-circuit protection for power transformers, high-voltage motors, or other electrical equipment.

Characteristics of RN3 series indoor high-voltage current limiting fuse products

The product consists of a base and a melting tube. One end of the melting tube is equipped with an indicator, which will pop out once the fuse is activated.
A ribbed ceramic tube wrapped with one or more molten materials is installed inside the melting tube, and the inner space is filled with quartz sand, which plays a role in extinguishing the arc.