Netzschalter

Netzschalter is the term used for the switch that connects or disconnects the mains supply to an electrical appliance, enabling the user to turn the device on or off. It is typically designed to interrupt the live conductor and to withstand the voltages and currents occurring in household or industrial networks. The Netzschalter is often located on the exterior of a device or integrated into the power entry module.

Common types include mechanical switches such as toggle, rocker, push-button, and slide switches. They can be latching (keeping the on/off state after actuation) or momentary (spring-return). In power supplies and larger equipment, electronic or solid-state switches and relays may be used to provide remote or electronic control, while the Netzschalter in many consumer devices remains a mechanical switch.

Electrical ratings specify the maximum voltage and current the switch can safely interrupt, as well as endurance under repeated operation and the nature of the load (resistive, inductive, or capacitive). In Europe, switches for appliances are typically described under standards such as EN 61058 and may bear VDE certification in Germany. Proper protection includes suitable enclosure, insulation, and, for external use, an appropriate IP rating to resist dust or moisture exposure.

Safety and maintenance: the Netzschalter should be operated only with the device de-energized and accessible for replacement or inspection. Wear, welded contacts, or arcing can compromise performance, and damaged switches should be replaced by qualified personnel. The device may carry on/off markings or symbols indicating its function, commonly using I (on) and O (off) or the universal power symbol.