Surge Protector for Analog Telephone and DSL Line

SUG-DSL/DIN is a device designed for analog telephone lines or switched lines, used for conversations and DSL technology. It protects internal installations, telephones, internal telephone exchanges, and internet routers from the penetration of impulse shocks during atmospheric discharges. The product is recommended especially for overhead subscriber telephone lines and connections between buildings.

3-stage surge protection using a MOSFET fuse protects against the effects of induced surges in the wires as well as partial lightning currents. The protective action also takes place between individual wires, limiting the harmful temporary voltage increase on the telephone line.
The modern design has allowed for a very low attenuation of the product, which is important for the fastest xDSL connections.

The product is recommended for installation at the boundary between LPZ0 and LPZ1 zones or higher.

Simplified internal diagram.

To secure the external telephone line, one protective product should be used at the entrance to the building.

Protection of subscriber telephone line or DSL connection.

In case of the need to secure a local telephone line, it is recommended to use two products to protect the telephone exchange and internal phones.

Overvoltage protection for internal aerial telephone line

Short technical specification