Eliminates DC current, such as stray current and the like, from communication lines.
Blocks lightning surge energy propagation paths.
Metallic communication line termination and jumper ring
This device is used to eliminate the stray current that may be generated on metallic cable connecting communication systems installed on different floors, or communication systems taking power from different power systems. And, in addition to preventing mis-operation of equipment, it is also used to protect equipment from damage by lightning surge voltage generated by lightning strikes on buildings.