Uzemnд›no Pе™es | Sг­еґ

The device's protective ground (PE - Protective Earth) is connected to the protective grounding system of the electrical grid (e.g., in a TN-S or TN-C-S system).

It ensures that if a fault occurs, the circuit breaker or RCD (residual-current device) trips.

This phrase often appears in installation manuals for equipment (IT, appliances, industrial machines) to confirm compliance with safety standards ČSN standards .

This terminology is generally used in technical, electrical engineering, or safety documentation regarding the grounding scheme of a device or installation. Key Contextual Information (as of 2026)