jordfejlstrømsafbrydere
Jordfejlstrømsafbrydere, often abbreviated as RCDs (Residual Current Devices) or FI-afbrydere (Fehlersstrom-Schutzschalter), are safety devices designed to protect against electric shock. They work by monitoring the electrical current flowing through a circuit. In a normal circuit, the current flowing out on the live wire is equal to the current returning on the neutral wire.
If a fault occurs, such as a person touching a live wire, some of the current will
Jordfejlstrømsafbrydere do not protect against overcurrents or short circuits, which are the functions of circuit breakers