Netzabschluss

Netzabschluss is a term used in German-speaking contexts to describe the boundary or interface point at which a public network ends and a customer’s installation begins. It denotes the demarcation between the external network infrastructure, operated by a network or utility provider, and the internal network or installation controlled by the end user.

In the electricity sector, the Netzabschlusspunkt (network termination point) marks where the distribution network operator hands over supply to the customer. The equipment located at or near this point, such as a Netzabschlusskasten (network termination box) and associated metering and protection devices, is typically considered part of the network operator’s obligation up to the boundary. Beyond this point, the customer is responsible for the internal wiring and the electrical installation within the premises. The exact responsibilities and location of the Netzabschlusspunkt are defined by national laws, regulations, and technical standards (for example, the German EnWG and VDE rules).

In telecommunications, Netzabschluss refers to the interface device or location where the public telecom network terminates and the customer’s local network begins. The Netzabschlussgerät or similar demarcation equipment marks the boundary of carrier responsibility; the customer then manages and maintains the internal network, including routers, switches, and end-user devices.

The concept serves to clarify liability, maintenance, and fault-division between providers and customers. While the term is most commonly encountered in electricity and telecom contexts in German-speaking regions, the general idea of a demarcation point is widely used in network design and regulatory discussions across different sectors and countries.